# ICPC Contest Problems & Statements Inventory Report (Stage 1) This authoritative report catalogs all ICPC contests with verified problem statements and judge data. Each problem appearance is cataloged with its **Letter**, **Official Name**, **Sub-Contest / Division**, **Problem Directory**, and **Exact Statement PDF Location**. ### Inventory Summary - **Total Cataloged Contests & Years:** 344 - **Total Sub-Contests / Divisions / Practices:** 397 - **Total Problem Appearances Cataloged:** 4052 --- ## Benelux Algorithm Programming Championship (2017) - **Contest Slug:** `bapc` - **Year:** 2017 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%202017) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1783) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------- | :---------------- | :----------------------- | :-------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Amsterdam Distance | `bapc/2017/A` | `bapc/2017/problems.pdf` | [amsterdamdistance](https://open.kattis.com/problems/amsterdamdistance) | [15003](https://solved.ac/problems/15003) | | **B** | Bearly Made It | `bapc/2017/B` | `bapc/2017/problems.pdf` | [bearlymadeit](https://open.kattis.com/problems/bearlymadeit) | [15004](https://solved.ac/problems/15004) | | **C** | Collatz Conjecture | `bapc/2017/C` | `bapc/2017/problems.pdf` | [collatzconjecture](https://open.kattis.com/problems/collatzconjecture) | [15005](https://solved.ac/problems/15005) | | **D** | Detour | `bapc/2017/D` | `bapc/2017/problems.pdf` | [detour](https://open.kattis.com/problems/detour) | [15006](https://solved.ac/problems/15006) | | **E** | Easter Eggs | `bapc/2017/E` | `bapc/2017/problems.pdf` | [eastereggs](https://open.kattis.com/problems/eastereggs) | [15007](https://solved.ac/problems/15007) | | **F** | Falling Apart | `bapc/2017/F` | `bapc/2017/problems.pdf` | [fallingapart](https://open.kattis.com/problems/fallingapart) | [15008](https://solved.ac/problems/15008) | | **G** | Going Dutch | `bapc/2017/G` | `bapc/2017/problems.pdf` | [goingdutch](https://open.kattis.com/problems/goingdutch) | [15009](https://solved.ac/problems/15009) | | **H** | Hoarse Horses | `bapc/2017/H` | `bapc/2017/problems.pdf` | [hoarsehorses](https://open.kattis.com/problems/hoarsehorses) | [15010](https://solved.ac/problems/15010) | | **I** | Irrational Division | `bapc/2017/I` | `bapc/2017/problems.pdf` | [irrationaldivision](https://open.kattis.com/problems/irrationaldivision) | [15011](https://solved.ac/problems/15011) | | **J** | Jumping Choreography | - | `bapc/2017/problems.pdf` | [jumpingchoreography](https://open.kattis.com/problems/jumpingchoreography) | [15012](https://solved.ac/problems/15012) | | **K** | King of the Waves | `bapc/2017/K` | `bapc/2017/problems.pdf` | [kingofthewaves](https://open.kattis.com/problems/kingofthewaves) | [15013](https://solved.ac/problems/15013) | | **L** | Lemonade Trade | - | `bapc/2017/problems.pdf` | [lemonadetrade](https://open.kattis.com/problems/lemonadetrade) | [15014](https://solved.ac/problems/15014) | | **M** | Manhattan Mornings | - | `bapc/2017/problems.pdf` | [manhattanmornings](https://open.kattis.com/problems/manhattanmornings) | [15015](https://solved.ac/problems/15015) | --- ## Benelux Algorithm Programming Championship (2018) - **Contest Slug:** `bapc` - **Year:** 2018 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%202018) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1937) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------------------- | :-------------------------------------- | :------------------------- | :--------------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | A Prize No One Can Win | `bapc/2018/aprizenoonecanwin` | `bapc/2018/bapc-print.pdf` | [aprizenoonecanwin](https://open.kattis.com/problems/aprizenoonecanwin) | [16304](https://solved.ac/problems/16304) | | **B** | Birthday Boy | `bapc/2018/birthdayboy` | `bapc/2018/bapc-print.pdf` | [birthdayboy](https://open.kattis.com/problems/birthdayboy) | [16305](https://solved.ac/problems/16305) | | **C** | Cardboard Container | `bapc/2018/cardboardcontainer` | `bapc/2018/bapc-print.pdf` | [cardboardcontainer](https://open.kattis.com/problems/cardboardcontainer) | [16306](https://solved.ac/problems/16306) | | **D** | Driver Disagreement | `bapc/2018/driverdisagreement` | `bapc/2018/bapc-print.pdf` | [driverdisagreement](https://open.kattis.com/problems/driverdisagreement) | [16307](https://solved.ac/problems/16307) | | **E** | Entirely Unsorted Sequences | `bapc/2018/entirelyunsortedsequences` | `bapc/2018/bapc-print.pdf` | [entirelyunsortedsequences](https://open.kattis.com/problems/entirelyunsortedsequences) | [16308](https://solved.ac/problems/16308) | | **F** | Financial Planning | `bapc/2018/financialplanning` | `bapc/2018/bapc-print.pdf` | [financialplanning](https://open.kattis.com/problems/financialplanning) | [16309](https://solved.ac/problems/16309) | | **G** | Game Night | `bapc/2018/gamenight` | `bapc/2018/bapc-print.pdf` | [gamenight](https://open.kattis.com/problems/gamenight) | [16310](https://solved.ac/problems/16310) | | **H** | Harry the Hamster | `bapc/2018/hamster` | `bapc/2018/bapc-print.pdf` | [hamster](https://open.kattis.com/problems/hamster) | [16311](https://solved.ac/problems/16311) | | **I** | In Case of an Invasion, Please ... | `bapc/2018/incaseofinvasion` | `bapc/2018/bapc-print.pdf` | [incaseofinvasion](https://open.kattis.com/problems/incaseofinvasion) | [16312](https://solved.ac/problems/16312) | | **J** | Janitor Troubles | `bapc/2018/janitortroubles` | `bapc/2018/bapc-print.pdf` | [janitortroubles](https://open.kattis.com/problems/janitortroubles) | [16313](https://solved.ac/problems/16313) | | **K** | Kingpin Escape | `bapc/2018/kingpinescape` | `bapc/2018/bapc-print.pdf` | [kingpinescape](https://open.kattis.com/problems/kingpinescape) | [16314](https://solved.ac/problems/16314) | --- ## Benelux Algorithm Programming Championship (2019) - **Contest Slug:** `bapc` - **Year:** 2019 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%202019) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2094) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------- | :---------------- | :---------------------- | :-------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Appeal to the Audience | `bapc/2019/A` | `bapc/2019/contest.pdf` | [appealtotheaudience](https://open.kattis.com/problems/appealtotheaudience) | [17782](https://solved.ac/problems/17782) | | **B** | Breaking Branches | `bapc/2019/B` | `bapc/2019/contest.pdf` | [breakingbranches](https://open.kattis.com/problems/breakingbranches) | [17783](https://solved.ac/problems/17783) | | **C** | Conveyor Belts | `bapc/2019/C` | `bapc/2019/contest.pdf` | [conveyorbelts2](https://open.kattis.com/problems/conveyorbelts2) | [17784](https://solved.ac/problems/17784) | | **D** | Deck Randomisation | `bapc/2019/D` | `bapc/2019/contest.pdf` | [deckrandomisation](https://open.kattis.com/problems/deckrandomisation) | [17785](https://solved.ac/problems/17785) | | **E** | Efficient Exchange | `bapc/2019/E` | `bapc/2019/contest.pdf` | [efficientexchange](https://open.kattis.com/problems/efficientexchange) | [17786](https://solved.ac/problems/17786) | | **F** | Find my Family | `bapc/2019/F` | `bapc/2019/contest.pdf` | [findmyfamily](https://open.kattis.com/problems/findmyfamily) | [17787](https://solved.ac/problems/17787) | | **G** | Gluttonous Goop | `bapc/2019/G` | `bapc/2019/contest.pdf` | [gluttonousgoop](https://open.kattis.com/problems/gluttonousgoop) | [17788](https://solved.ac/problems/17788) | | **H** | Historic Exhibition | `bapc/2019/H` | `bapc/2019/contest.pdf` | [historicexhibition](https://open.kattis.com/problems/historicexhibition) | [17789](https://solved.ac/problems/17789) | | **I** | Inquiry II | `bapc/2019/I` | `bapc/2019/contest.pdf` | [inquiryii](https://open.kattis.com/problems/inquiryii) | [17790](https://solved.ac/problems/17790) | | **J** | Jazz it Up! | `bapc/2019/J` | `bapc/2019/contest.pdf` | [jazzitup](https://open.kattis.com/problems/jazzitup) | [17791](https://solved.ac/problems/17791) | | **K** | Keep Him Inside | `bapc/2019/K` | `bapc/2019/contest.pdf` | [keephiminside](https://open.kattis.com/problems/keephiminside) | [17792](https://solved.ac/problems/17792) | | **L** | Lucky Draw | `bapc/2019/L` | `bapc/2019/contest.pdf` | [luckydraw](https://open.kattis.com/problems/luckydraw) | [17793](https://solved.ac/problems/17793) | --- ## Benelux Algorithm Programming Championship (2020) - **Contest Slug:** `bapc` - **Year:** 2020 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%202020) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2360) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------ | :---------------- | :------------------------- | :---------------------------------------------------------------------: | :---------------------------------------: | | **A** | Aquarium Arrangement | `bapc/2020/A` | `bapc/2020/problemset.pdf` | [aquarium](https://open.kattis.com/problems/aquarium) | [20329](https://solved.ac/problems/20329) | | **B** | Balanced Breakdown | `bapc/2020/B` | `bapc/2020/problemset.pdf` | [bidirectionalcode](https://open.kattis.com/problems/bidirectionalcode) | [20330](https://solved.ac/problems/20330) | | **C** | Corrupted Contest | `bapc/2020/C` | `bapc/2020/problemset.pdf` | [corruptjudge](https://open.kattis.com/problems/corruptjudge) | [20331](https://solved.ac/problems/20331) | | **D** | Destabilized Drone | `bapc/2020/D` | `bapc/2020/problemset.pdf` | - | [20348](https://solved.ac/problems/20348) | | **E** | Efficiently Elevated | `bapc/2020/E` | `bapc/2020/problemset.pdf` | [elevatorpitch](https://open.kattis.com/problems/elevatorpitch) | [20333](https://solved.ac/problems/20333) | | **F** | Family Fares | `bapc/2020/F` | `bapc/2020/problemset.pdf` | [familyfares](https://open.kattis.com/problems/familyfares) | [20334](https://solved.ac/problems/20334) | | **G** | Generator Grid | `bapc/2020/G` | `bapc/2020/problemset.pdf` | [generators](https://open.kattis.com/problems/generators) | [20335](https://solved.ac/problems/20335) | | **H** | Hungry Henk | `bapc/2020/H` | `bapc/2020/problemset.pdf` | [haughtycuisine](https://open.kattis.com/problems/haughtycuisine) | [20336](https://solved.ac/problems/20336) | | **I** | Incomplete Implementation | `bapc/2020/I` | `bapc/2020/problemset.pdf` | [incompletesort](https://open.kattis.com/problems/incompletesort) | [20337](https://solved.ac/problems/20337) | | **J** | Jigsaw | `bapc/2020/J` | `bapc/2020/problemset.pdf` | [jigsaw](https://open.kattis.com/problems/jigsaw) | [20338](https://solved.ac/problems/20338) | | **K** | Xortest Path | `bapc/2020/K` | `bapc/2020/problemset.pdf` | [kleptocrat](https://open.kattis.com/problems/kleptocrat) | [20349](https://solved.ac/problems/20349) | --- ## Benelux Algorithm Programming Championship (2021) - **Contest Slug:** `bapc` - **Year:** 2021 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%202021) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2826) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------------- | :--------------------------------------- | :-------------------------------- | :-------------------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Arm Coordination | `bapc/2021/armcoordination` | `bapc/2021/bapc2021-problems.pdf` | [armcoordination](https://open.kattis.com/problems/armcoordination) | [23375](https://solved.ac/problems/23375) | | **B** | BnPC | `bapc/2021/bnpc` | `bapc/2021/bapc2021-problems.pdf` | [bnpc](https://open.kattis.com/problems/bnpc) | [23376](https://solved.ac/problems/23376) | | **C** | Cangaroo | `bapc/2021/cangaroo` | `bapc/2021/bapc2021-problems.pdf` | [cangaroo](https://open.kattis.com/problems/cangaroo) | [23377](https://solved.ac/problems/23377) | | **D** | Decelerating Jump | `bapc/2021/decelerating` | `bapc/2021/bapc2021-problems.pdf` | [deceleratingjump](https://open.kattis.com/problems/deceleratingjump) | [23378](https://solved.ac/problems/23378) | | **E** | Evolutionary Excerpt | `bapc/2021/evolutionaryexcerpt` | `bapc/2021/bapc2021-problems.pdf` | [evolutionaryexcerpt](https://open.kattis.com/problems/evolutionaryexcerpt) | [23379](https://solved.ac/problems/23379) | | **F** | Fair Play | `bapc/2021/fairplay` | `bapc/2021/bapc2021-problems.pdf` | [fairplay](https://open.kattis.com/problems/fairplay) | [23380](https://solved.ac/problems/23380) | | **G** | Gyrating Glyphs | `bapc/2021/gyratingglyphs` | `bapc/2021/bapc2021-problems.pdf` | [gyratingglyphs](https://open.kattis.com/problems/gyratingglyphs) | [23381](https://solved.ac/problems/23381) | | **H** | Hamiltooonian Hike | `bapc/2021/hamiltonpath` | `bapc/2021/bapc2021-problems.pdf` | [hamiltooonianhike](https://open.kattis.com/problems/hamiltooonianhike) | [23382](https://solved.ac/problems/23382) | | **I** | Implementation Irregularities | `bapc/2021/implementationirregularities` | `bapc/2021/bapc2021-problems.pdf` | [implementationirregularities](https://open.kattis.com/problems/implementationirregularities) | [23383](https://solved.ac/problems/23383) | | **J** | Jail or Joyride | `bapc/2021/jailorjoyride` | `bapc/2021/bapc2021-problems.pdf` | [jailorjoyride](https://open.kattis.com/problems/jailorjoyride) | [23384](https://solved.ac/problems/23384) | | **K** | Kinking Cables | `bapc/2021/kinkingcables` | `bapc/2021/bapc2021-problems.pdf` | [kinkingcables](https://open.kattis.com/problems/kinkingcables) | [23385](https://solved.ac/problems/23385) | | **L** | Lopsided Lineup | `bapc/2021/lopsidedlineup` | `bapc/2021/bapc2021-problems.pdf` | [lopsidedlineup](https://open.kattis.com/problems/lopsidedlineup) | [23386](https://solved.ac/problems/23386) | --- ## Benelux Algorithm Programming Championship (2022) - **Contest Slug:** `bapc` - **Year:** 2022 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%202022) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/3222) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------------- | :-------------------------------------- | :----------------------- | :-----------------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Adjusted Average | `bapc/2022/adjustedaverage` | `bapc/2022/problems.pdf` | [adjustedaverage](https://open.kattis.com/problems/adjustedaverage) | [25992](https://solved.ac/problems/25992) | | **B** | Bellevue | `bapc/2022/bellevue` | `bapc/2022/problems.pdf` | [bellevue](https://open.kattis.com/problems/bellevue) | [25993](https://solved.ac/problems/25993) | | **C** | Crashing Competition Computer | `bapc/2022/crashingcompetitioncomputer` | `bapc/2022/problems.pdf` | [crashingcompetitioncomputer](https://open.kattis.com/problems/crashingcompetitioncomputer) | [25994](https://solved.ac/problems/25994) | | **D** | Dividing DNA | `bapc/2022/dividingdna` | `bapc/2022/problems.pdf` | [dividingdna](https://open.kattis.com/problems/dividingdna) | [25995](https://solved.ac/problems/25995) | | **E** | Equalising Audio | `bapc/2022/equalisingaudio` | `bapc/2022/problems.pdf` | [equalisingaudio](https://open.kattis.com/problems/equalisingaudio) | [25996](https://solved.ac/problems/25996) | | **F** | Failing Flagship | `bapc/2022/failingflagship` | `bapc/2022/problems.pdf` | [failingflagship](https://open.kattis.com/problems/failingflagship) | [25997](https://solved.ac/problems/25997) | | **G** | Grinding Gravel | `bapc/2022/grindinggravel` | `bapc/2022/problems.pdf` | [grindinggravel](https://open.kattis.com/problems/grindinggravel) | [25998](https://solved.ac/problems/25998) | | **H** | House Numbering | `bapc/2022/housenumbering` | `bapc/2022/problems.pdf` | [housenumbering](https://open.kattis.com/problems/housenumbering) | [25999](https://solved.ac/problems/25999) | | **I** | Imperfect Imperial Units | `bapc/2022/imperfectimperialunits` | `bapc/2022/problems.pdf` | [imperfectimperialunits](https://open.kattis.com/problems/imperfectimperialunits) | [26000](https://solved.ac/problems/26000) | | **J** | Jagged Skyline | `bapc/2022/jaggedskyline` | `bapc/2022/problems.pdf` | [jaggedskyline](https://open.kattis.com/problems/jaggedskyline) | [26001](https://solved.ac/problems/26001) | | **K** | Kiosk Construction | `bapc/2022/kioskconstruction` | `bapc/2022/problems.pdf` | [kioskconstruction](https://open.kattis.com/problems/kioskconstruction) | [26002](https://solved.ac/problems/26002) | | **L** | Lowest Latency | `bapc/2022/lowestlatency` | `bapc/2022/problems.pdf` | - | [26003](https://solved.ac/problems/26003) | --- ## Benelux Algorithm Programming Championship (2023) - **Contest Slug:** `bapc` - **Year:** 2023 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%202023) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4010) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------------- | :-------------------------------------- | :-------------------------- | :-----------------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | apt upgrade | `bapc/2023/aptupgrade` | `bapc/2023/contest-web.pdf` | [aptupgrade](https://open.kattis.com/problems/aptupgrade) | [30489](https://solved.ac/problems/30489) | | **B** | Battle Bots | `bapc/2023/battlebots` | `bapc/2023/contest-web.pdf` | [battlebots](https://open.kattis.com/problems/battlebots) | [30490](https://solved.ac/problems/30490) | | **C** | Compressing Commands | `bapc/2023/compressingcommands` | `bapc/2023/contest-web.pdf` | [compressingcommands](https://open.kattis.com/problems/compressingcommands) | [30491](https://solved.ac/problems/30491) | | **D** | Democratic Naming | `bapc/2023/democraticnaming` | `bapc/2023/contest-web.pdf` | [democraticnaming](https://open.kattis.com/problems/democraticnaming) | [30492](https://solved.ac/problems/30492) | | **E** | Exam Study Planning | `bapc/2023/examstudyplanning` | `bapc/2023/contest-web.pdf` | [examstudyplanning](https://open.kattis.com/problems/examstudyplanning) | [30493](https://solved.ac/problems/30493) | | **F** | Funicular Frenzy | `bapc/2023/funicularfrenzy` | `bapc/2023/contest-web.pdf` | [funicularfrenzy](https://open.kattis.com/problems/funicularfrenzy) | [30494](https://solved.ac/problems/30494) | | **G** | Geometry Game | `bapc/2023/geometrygame` | `bapc/2023/contest-web.pdf` | [geometrygame](https://open.kattis.com/problems/geometrygame) | [30495](https://solved.ac/problems/30495) | | **H** | Hidden Art | `bapc/2023/hiddenart` | `bapc/2023/contest-web.pdf` | [hiddenart](https://open.kattis.com/problems/hiddenart) | [30496](https://solved.ac/problems/30496) | | **I** | International Irregularities | `bapc/2023/internationalirregularities` | `bapc/2023/contest-web.pdf` | [internationalirregularities](https://open.kattis.com/problems/internationalirregularities) | [30497](https://solved.ac/problems/30497) | | **J** | Jungle Job | `bapc/2023/junglejob` | `bapc/2023/contest-web.pdf` | [junglejob](https://open.kattis.com/problems/junglejob) | [30498](https://solved.ac/problems/30498) | | **K** | King of the Hill | `bapc/2023/kingofthehill` | `bapc/2023/contest-web.pdf` | [kingofthehill](https://open.kattis.com/problems/kingofthehill) | [30499](https://solved.ac/problems/30499) | | **L** | Locking Doors | `bapc/2023/lockingdoors` | `bapc/2023/contest-web.pdf` | [lockingdoors](https://open.kattis.com/problems/lockingdoors) | [30500](https://solved.ac/problems/30500) | --- ## Benelux Algorithm Programming Championship (2024) - **Contest Slug:** `bapc` - **Year:** 2024 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%202024) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4319) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------------- | :----------------- | :------------------------- | :-----------------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | "Aaawww..." or "Aaayyy!!!" | `bapc/2024/data/a` | `bapc/2024/problemset.pdf` | [aaawwworaaayyy](https://open.kattis.com/problems/aaawwworaaayyy) | [32595](https://solved.ac/problems/32595) | | **B** | Buggy Blinkers | `bapc/2024/data/b` | `bapc/2024/problemset.pdf` | [buggyblinkers](https://open.kattis.com/problems/buggyblinkers) | [32596](https://solved.ac/problems/32596) | | **C** | Concurrent Contests | `bapc/2024/data/c` | `bapc/2024/problemset.pdf` | [concurrentcontests](https://open.kattis.com/problems/concurrentcontests) | [32597](https://solved.ac/problems/32597) | | **D** | Disgruntled Diner | `bapc/2024/data/d` | `bapc/2024/problemset.pdf` | [disgruntleddiner](https://open.kattis.com/problems/disgruntleddiner) | [32598](https://solved.ac/problems/32598) | | **E** | Extraterrestrial Exploration | `bapc/2024/data/e` | `bapc/2024/problemset.pdf` | [extraterrestrialexploration](https://open.kattis.com/problems/extraterrestrialexploration) | [32599](https://solved.ac/problems/32599) | | **F** | Failing Factory | `bapc/2024/data/f` | `bapc/2024/problemset.pdf` | [failingfactory](https://open.kattis.com/problems/failingfactory) | [32600](https://solved.ac/problems/32600) | | **G** | Grocery Greed | `bapc/2024/data/g` | `bapc/2024/problemset.pdf` | [grocerygreed](https://open.kattis.com/problems/grocerygreed) | [32601](https://solved.ac/problems/32601) | | **H** | Horse Habitat | `bapc/2024/data/h` | `bapc/2024/problemset.pdf` | [horsehabitat](https://open.kattis.com/problems/horsehabitat) | [32602](https://solved.ac/problems/32602) | | **I** | Interrail Pass | `bapc/2024/data/i` | `bapc/2024/problemset.pdf` | [interrailpass](https://open.kattis.com/problems/interrailpass) | [32603](https://solved.ac/problems/32603) | | **J** | Jumbled Scoreboards | `bapc/2024/data/j` | `bapc/2024/problemset.pdf` | [jumbledscoreboards](https://open.kattis.com/problems/jumbledscoreboards) | [32604](https://solved.ac/problems/32604) | | **K** | Karaoke Compression | `bapc/2024/data/k` | `bapc/2024/problemset.pdf` | [karaokecompression](https://open.kattis.com/problems/karaokecompression) | [32605](https://solved.ac/problems/32605) | | **L** | Levelling Locks | `bapc/2024/data/l` | `bapc/2024/problemset.pdf` | [levellinglocks](https://open.kattis.com/problems/levellinglocks) | [32606](https://solved.ac/problems/32606) | | **M** | Museum Visit | `bapc/2024/data/m` | `bapc/2024/problemset.pdf` | [museumvisit](https://open.kattis.com/problems/museumvisit) | [32607](https://solved.ac/problems/32607) | --- ## Benelux Algorithm Programming Championship (2025) - **Contest Slug:** `bapc` - **Year:** 2025 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%202025) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4652) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------- | :--------------------------------------- | :----------------------------- | :-----------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Accidental Arithmetic | `bapc/2025/finals/accidentalarithmetic` | `bapc/2025/finals/contest.pdf` | [accidentalarithmetic](https://open.kattis.com/problems/accidentalarithmetic) | [35204](https://solved.ac/problems/35204) | | **B** | Boggle Sort | `bapc/2025/finals/bogglesort` | `bapc/2025/finals/contest.pdf` | [bogglesort](https://open.kattis.com/problems/bogglesort) | [35205](https://solved.ac/problems/35205) | | **C** | Coherency | `bapc/2025/finals/coherency` | `bapc/2025/finals/contest.pdf` | [coherency](https://open.kattis.com/problems/coherency) | [35206](https://solved.ac/problems/35206) | | **D** | Duo Detection | `bapc/2025/finals/duodetection` | `bapc/2025/finals/contest.pdf` | [duodetection](https://open.kattis.com/problems/duodetection) | [35207](https://solved.ac/problems/35207) | | **E** | Excruciating Elevators | `bapc/2025/finals/excruciatingelevators` | `bapc/2025/finals/contest.pdf` | [excruciatingelevators](https://open.kattis.com/problems/excruciatingelevators) | [35208](https://solved.ac/problems/35208) | | **F** | Faulty Connection | `bapc/2025/finals/faultyconnection` | `bapc/2025/finals/contest.pdf` | - | [35209](https://solved.ac/problems/35209) | | **G** | Garbage In, Garbage Out | `bapc/2025/finals/garbageingarbageout` | `bapc/2025/finals/contest.pdf` | - | [35210](https://solved.ac/problems/35210) | | **H** | Homesick | `bapc/2025/finals/homesick` | `bapc/2025/finals/contest.pdf` | [homesick](https://open.kattis.com/problems/homesick) | [35211](https://solved.ac/problems/35211) | | **I** | Intermill Logistics | `bapc/2025/finals/intermilllogistics` | `bapc/2025/finals/contest.pdf` | [intermilllogistics](https://open.kattis.com/problems/intermilllogistics) | [35212](https://solved.ac/problems/35212) | | **J** | Jacobi Numbers | `bapc/2025/finals/jacobinumbers` | `bapc/2025/finals/contest.pdf` | [jacobinumbers](https://open.kattis.com/problems/jacobinumbers) | [35213](https://solved.ac/problems/35213) | | **K** | Knowing the Clock | `bapc/2025/finals/knowingtheclock` | `bapc/2025/finals/contest.pdf` | [knowingtheclock](https://open.kattis.com/problems/knowingtheclock) | [35214](https://solved.ac/problems/35214) | | **L** | Linguistic Labyrinth | `bapc/2025/finals/linguisticlabyrinth` | `bapc/2025/finals/contest.pdf` | [linguisticlabyrinth](https://open.kattis.com/problems/linguisticlabyrinth) | [35215](https://solved.ac/problems/35215) | --- ## Benelux Algorithm Programming Championship Preliminaries (BAPC Prelims) (2017) - **Contest Slug:** `bapc-prelim` - **Year:** 2017 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%20preliminaries%202017) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1782) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------- | :------------------- | :------------------------------ | :-----------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Abandoned Animal | `bapc-prelim/2017/A` | `bapc-prelim/2017/problems.pdf` | [abandonedanimal](https://open.kattis.com/problems/abandonedanimal) | [14988](https://solved.ac/problems/14988) | | **B** | Booming Business | `bapc-prelim/2017/B` | `bapc-prelim/2017/problems.pdf` | [boomingbusiness](https://open.kattis.com/problems/boomingbusiness) | [14989](https://solved.ac/problems/14989) | | **C** | Crowd Control | `bapc-prelim/2017/C` | `bapc-prelim/2017/problems.pdf` | [crowdcontrol](https://open.kattis.com/problems/crowdcontrol) | [14990](https://solved.ac/problems/14990) | | **D** | Disastrous Doubling | `bapc-prelim/2017/D` | `bapc-prelim/2017/problems.pdf` | [disastrousdoubling](https://open.kattis.com/problems/disastrousdoubling) | [14991](https://solved.ac/problems/14991) | | **E** | Envious Exponents | `bapc-prelim/2017/E` | `bapc-prelim/2017/problems.pdf` | [enviousexponents](https://open.kattis.com/problems/enviousexponents) | [14992](https://solved.ac/problems/14992) | | **F** | Flatland Fidget Spinner | `bapc-prelim/2017/F` | `bapc-prelim/2017/problems.pdf` | [fidgetspinner](https://open.kattis.com/problems/fidgetspinner) | [14993](https://solved.ac/problems/14993) | | **G** | Ghostbusters | `bapc-prelim/2017/G` | `bapc-prelim/2017/problems.pdf` | [ghostbusters2](https://open.kattis.com/problems/ghostbusters2) | [14994](https://solved.ac/problems/14994) | | **H** | Horror Film Night | `bapc-prelim/2017/H` | `bapc-prelim/2017/problems.pdf` | [horrorfilmnight](https://open.kattis.com/problems/horrorfilmnight) | [14995](https://solved.ac/problems/14995) | | **I** | Intelligence Infection | `bapc-prelim/2017/I` | `bapc-prelim/2017/problems.pdf` | [intelligenceinfection](https://open.kattis.com/problems/intelligenceinfection) | [14996](https://solved.ac/problems/14996) | | **J** | Journal Editing | `bapc-prelim/2017/J` | `bapc-prelim/2017/problems.pdf` | [journalediting](https://open.kattis.com/problems/journalediting) | [14997](https://solved.ac/problems/14997) | | **K** | Knight's Marathon | `bapc-prelim/2017/K` | `bapc-prelim/2017/problems.pdf` | [knightsmarathon](https://open.kattis.com/problems/knightsmarathon) | [14998](https://solved.ac/problems/14998) | | **L** | Leapfrog | `bapc-prelim/2017/L` | `bapc-prelim/2017/problems.pdf` | [leapfrog](https://open.kattis.com/problems/leapfrog) | [14999](https://solved.ac/problems/14999) | --- ## Benelux Algorithm Programming Championship Preliminaries (BAPC Prelims) (2018) - **Contest Slug:** `bapc-prelim` - **Year:** 2018 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/ICPC%20SG%20Preliminary%20Contest%202018) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1936) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------------- | :------------------- | :------------------------------ | :-----------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Appalling Architecture | `bapc-prelim/2018/A` | `bapc-prelim/2018/problems.pdf` | [appallingarchitecture](https://open.kattis.com/problems/appallingarchitecture) | [16293](https://solved.ac/problems/16293) | | **B** | Bee Problem | `bapc-prelim/2018/B` | `bapc-prelim/2018/problems.pdf` | [beeproblem](https://open.kattis.com/problems/beeproblem) | [16294](https://solved.ac/problems/16294) | | **C** | Criss-Cross Cables | `bapc-prelim/2018/C` | `bapc-prelim/2018/problems.pdf` | [crisscrosscables](https://open.kattis.com/problems/crisscrosscables) | [16295](https://solved.ac/problems/16295) | | **D** | Daily Division | `bapc-prelim/2018/D` | `bapc-prelim/2018/problems.pdf` | [dailydivision](https://open.kattis.com/problems/dailydivision) | [16296](https://solved.ac/problems/16296) | | **E** | Eating Everything Efficiently | `bapc-prelim/2018/E` | `bapc-prelim/2018/problems.pdf` | [eatingeverything](https://open.kattis.com/problems/eatingeverything) | [16297](https://solved.ac/problems/16297) | | **F** | Floating Points | `bapc-prelim/2018/F` | `bapc-prelim/2018/problems.pdf` | [floatingpoints](https://open.kattis.com/problems/floatingpoints) | [16298](https://solved.ac/problems/16298) | | **G** | Green Light | `bapc-prelim/2018/G` | `bapc-prelim/2018/problems.pdf` | [greenlight](https://open.kattis.com/problems/greenlight) | [16299](https://solved.ac/problems/16299) | | **H** | H to O | `bapc-prelim/2018/H` | `bapc-prelim/2018/problems.pdf` | [htoo](https://open.kattis.com/problems/htoo) | [16300](https://solved.ac/problems/16300) | | **I** | Isomorphic Inversion | `bapc-prelim/2018/I` | `bapc-prelim/2018/problems.pdf` | [isomorphicinversion](https://open.kattis.com/problems/isomorphicinversion) | [16301](https://solved.ac/problems/16301) | | **J** | Jurassic Jigsaw | `bapc-prelim/2018/J` | `bapc-prelim/2018/problems.pdf` | [jurassicjigsaw](https://open.kattis.com/problems/jurassicjigsaw) | [16302](https://solved.ac/problems/16302) | | **K** | KALLAX Construction | `bapc-prelim/2018/K` | `bapc-prelim/2018/problems.pdf` | [kallaxconstruction](https://open.kattis.com/problems/kallaxconstruction) | [16303](https://solved.ac/problems/16303) | --- ## Benelux Algorithm Programming Championship Preliminaries (BAPC Prelims) (2019) - **Contest Slug:** `bapc-prelim` - **Year:** 2019 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%20preliminaries%202019) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2066) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------- | :------------------- | :--------------------------------- | :-----------------------------------------------------------------: | :---------------------------------------: | | **A** | Architecture | `bapc-prelim/2019/A` | `bapc-prelim/2019/contest-web.pdf` | [architecture](https://open.kattis.com/problems/architecture) | [17542](https://solved.ac/problems/17542) | | **B** | Bracket Sequence | `bapc-prelim/2019/B` | `bapc-prelim/2019/contest-web.pdf` | [bracketsequence](https://open.kattis.com/problems/bracketsequence) | [17543](https://solved.ac/problems/17543) | | **C** | Canyon Crossing | `bapc-prelim/2019/C` | `bapc-prelim/2019/contest-web.pdf` | [canyoncrossing](https://open.kattis.com/problems/canyoncrossing) | [17544](https://solved.ac/problems/17544) | | **D** | Deceptive Dice | `bapc-prelim/2019/D` | `bapc-prelim/2019/contest-web.pdf` | [deceptivedice](https://open.kattis.com/problems/deceptivedice) | [17545](https://solved.ac/problems/17545) | | **E** | Exits in Excess | `bapc-prelim/2019/E` | `bapc-prelim/2019/contest-web.pdf` | [exitsinexcess](https://open.kattis.com/problems/exitsinexcess) | [17546](https://solved.ac/problems/17546) | | **F** | Floor Plan | `bapc-prelim/2019/F` | `bapc-prelim/2019/contest-web.pdf` | [floorplan](https://open.kattis.com/problems/floorplan) | [17547](https://solved.ac/problems/17547) | | **G** | Greetings! | `bapc-prelim/2019/G` | `bapc-prelim/2019/contest-web.pdf` | [greetings2](https://open.kattis.com/problems/greetings2) | [17548](https://solved.ac/problems/17548) | | **H** | Hexagonal Rooks | `bapc-prelim/2019/H` | `bapc-prelim/2019/contest-web.pdf` | [hexagonalrooks](https://open.kattis.com/problems/hexagonalrooks) | [17549](https://solved.ac/problems/17549) | | **I** | Inquiry I | `bapc-prelim/2019/I` | `bapc-prelim/2019/contest-web.pdf` | [inquiryi](https://open.kattis.com/problems/inquiryi) | [17550](https://solved.ac/problems/17550) | | **J** | Jumbled Journey | `bapc-prelim/2019/J` | `bapc-prelim/2019/contest-web.pdf` | [jumbledjourney](https://open.kattis.com/problems/jumbledjourney) | [17551](https://solved.ac/problems/17551) | | **K** | Knapsack Packing | `bapc-prelim/2019/K` | `bapc-prelim/2019/contest-web.pdf` | [knapsackpacking](https://open.kattis.com/problems/knapsackpacking) | [17552](https://solved.ac/problems/17552) | | **L** | Lifeguards | `bapc-prelim/2019/L` | `bapc-prelim/2019/contest-web.pdf` | [lifeguards](https://open.kattis.com/problems/lifeguards) | [17553](https://solved.ac/problems/17553) | --- ## Benelux Algorithm Programming Championship Preliminaries (BAPC Prelims) (2022) - **Contest Slug:** `bapc-prelim` - **Year:** 2022 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%20preliminaries%202022) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/3221) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------- | :-------------------------------------- | :------------------------------ | :---------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Abbreviated Aliases | `bapc-prelim/2022/abbreviatedaliases` | `bapc-prelim/2022/problems.pdf` | [abbreviatedaliases](https://open.kattis.com/problems/abbreviatedaliases) | [25980](https://solved.ac/problems/25980) | | **B** | Bubble-bubble Sort | `bapc-prelim/2022/bubblebubblesort` | `bapc-prelim/2022/problems.pdf` | [bubblebubblesort](https://open.kattis.com/problems/bubblebubblesort) | [25981](https://solved.ac/problems/25981) | | **C** | Cookbook Composition | `bapc-prelim/2022/cookbookcomposition` | `bapc-prelim/2022/problems.pdf` | [cookbookcomposition](https://open.kattis.com/problems/cookbookcomposition) | [25982](https://solved.ac/problems/25982) | | **D** | Dimensional Debugging | `bapc-prelim/2022/dimensionaldebugging` | `bapc-prelim/2022/problems.pdf` | [dimensionaldebugging](https://open.kattis.com/problems/dimensionaldebugging) | [25983](https://solved.ac/problems/25983) | | **E** | Extended Braille | `bapc-prelim/2022/extendedbraille` | `bapc-prelim/2022/problems.pdf` | [extendedbraille](https://open.kattis.com/problems/extendedbraille) | [25984](https://solved.ac/problems/25984) | | **F** | Fastestest Function | `bapc-prelim/2022/fastestestfunction` | `bapc-prelim/2022/problems.pdf` | [fastestestfunction](https://open.kattis.com/problems/fastestestfunction) | [25985](https://solved.ac/problems/25985) | | **G** | Guessing Primes | `bapc-prelim/2022/guessingprimes` | `bapc-prelim/2022/problems.pdf` | [guessingprimes](https://open.kattis.com/problems/guessingprimes) | [25986](https://solved.ac/problems/25986) | | **H** | Heavy Hauling | `bapc-prelim/2022/heavyhauling` | `bapc-prelim/2022/problems.pdf` | [heavyhauling](https://open.kattis.com/problems/heavyhauling) | [25987](https://solved.ac/problems/25987) | | **I** | Inked Inscriptions | `bapc-prelim/2022/inkedinscriptions` | `bapc-prelim/2022/problems.pdf` | [inkedinscriptions](https://open.kattis.com/problems/inkedinscriptions) | [25988](https://solved.ac/problems/25988) | | **J** | Jabbing Jets | `bapc-prelim/2022/jabbingjets` | `bapc-prelim/2022/problems.pdf` | [jabbingjets](https://open.kattis.com/problems/jabbingjets) | [25989](https://solved.ac/problems/25989) | | **K** | Knitting Patterns | `bapc-prelim/2022/knittingpatterns` | `bapc-prelim/2022/problems.pdf` | [knittingpatterns](https://open.kattis.com/problems/knittingpatterns) | [25990](https://solved.ac/problems/25990) | | **L** | Lots of Liquid | `bapc-prelim/2022/lotsofliquid` | `bapc-prelim/2022/problems.pdf` | [lotsofliquid](https://open.kattis.com/problems/lotsofliquid) | [25991](https://solved.ac/problems/25991) | --- ## Benelux Algorithm Programming Championship Preliminaries (BAPC Prelims) (2023) - **Contest Slug:** `bapc-prelim` - **Year:** 2023 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%20preliminaries%202023) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/3987) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------- | :---------------------------------------- | :------------------------------ | :-------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Anti-Tetris | `bapc-prelim/2023/antitetris` | `bapc-prelim/2023/problems.pdf` | [antitetris](https://open.kattis.com/problems/antitetris) | [30305](https://solved.ac/problems/30305) | | **B** | Better Dice | `bapc-prelim/2023/betterdice` | `bapc-prelim/2023/problems.pdf` | [betterdice](https://open.kattis.com/problems/betterdice) | [30306](https://solved.ac/problems/30306) | | **C** | Cheap Flying | `bapc-prelim/2023/cheapflying` | `bapc-prelim/2023/problems.pdf` | [cheapflying](https://open.kattis.com/problems/cheapflying) | [30307](https://solved.ac/problems/30307) | | **D** | Determining Duos | `bapc-prelim/2023/determiningduos` | `bapc-prelim/2023/problems.pdf` | [determiningduos](https://open.kattis.com/problems/determiningduos) | [30308](https://solved.ac/problems/30308) | | **E** | Exceeding Limits | `bapc-prelim/2023/exceedinglimits` | `bapc-prelim/2023/problems.pdf` | [exceedinglimits](https://open.kattis.com/problems/exceedinglimits) | [30309](https://solved.ac/problems/30309) | | **F** | Finding Forks | `bapc-prelim/2023/findingforks` | `bapc-prelim/2023/problems.pdf` | [findingforks](https://open.kattis.com/problems/findingforks) | [30310](https://solved.ac/problems/30310) | | **G** | Gathering Search Results | `bapc-prelim/2023/gatheringsearchresults` | `bapc-prelim/2023/problems.pdf` | [gatheringsearchresults](https://open.kattis.com/problems/gatheringsearchresults) | [30311](https://solved.ac/problems/30311) | | **H** | Hacky Ordering | `bapc-prelim/2023/hackyordering` | `bapc-prelim/2023/problems.pdf` | [hackyordering](https://open.kattis.com/problems/hackyordering) | [30312](https://solved.ac/problems/30312) | | **I** | Idle Terminal | `bapc-prelim/2023/idleterminal` | `bapc-prelim/2023/problems.pdf` | [idleterminal](https://open.kattis.com/problems/idleterminal) | [30313](https://solved.ac/problems/30313) | | **J** | Just a Joystick | `bapc-prelim/2023/justajoystick` | `bapc-prelim/2023/problems.pdf` | [justajoystick](https://open.kattis.com/problems/justajoystick) | [30314](https://solved.ac/problems/30314) | | **K** | King's Keep | `bapc-prelim/2023/kingskeep` | `bapc-prelim/2023/problems.pdf` | [kingskeep](https://open.kattis.com/problems/kingskeep) | [30315](https://solved.ac/problems/30315) | | **L** | Losing Leaves | `bapc-prelim/2023/losingleaves` | `bapc-prelim/2023/problems.pdf` | [losingleaves](https://open.kattis.com/problems/losingleaves) | [30316](https://solved.ac/problems/30316) | | **M** | Monorail | `bapc-prelim/2023/monorail` | `bapc-prelim/2023/problems.pdf` | [monorail](https://open.kattis.com/problems/monorail) | [30317](https://solved.ac/problems/30317) | --- ## Benelux Algorithm Programming Championship Preliminaries (BAPC Prelims) (2024) - **Contest Slug:** `bapc-prelim` - **Year:** 2024 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%20preliminaries%202024) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4313) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------- | :----------------------------------------- | :------------------------------ | :---------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Awkward Auction | `bapc-prelim/2024/awkwardauction` | `bapc-prelim/2024/problems.pdf` | [awkwardauction](https://open.kattis.com/problems/awkwardauction) | [32537](https://solved.ac/problems/32537) | | **B** | Battle of Nieuwpoort | `bapc-prelim/2024/battleofnieuwpoort` | `bapc-prelim/2024/problems.pdf` | [battleofnieuwpoort](https://open.kattis.com/problems/battleofnieuwpoort) | [32538](https://solved.ac/problems/32538) | | **C** | Chaotic Cables | `bapc-prelim/2024/chaoticcables` | `bapc-prelim/2024/problems.pdf` | [chaoticcables](https://open.kattis.com/problems/chaoticcables) | [32539](https://solved.ac/problems/32539) | | **D** | Dialling Digits | `bapc-prelim/2024/diallingdigits` | `bapc-prelim/2024/problems.pdf` | [diallingdigits](https://open.kattis.com/problems/diallingdigits) | [32540](https://solved.ac/problems/32540) | | **E** | Expected Error | `bapc-prelim/2024/expectederror` | `bapc-prelim/2024/problems.pdf` | [expectederror](https://open.kattis.com/problems/expectederror) | [32541](https://solved.ac/problems/32541) | | **F** | Fractal Area | `bapc-prelim/2024/fractalarea` | `bapc-prelim/2024/problems.pdf` | - | [32542](https://solved.ac/problems/32542) | | **G** | Giganotosaurus Game | `bapc-prelim/2024/giganotosaurusgame` | `bapc-prelim/2024/problems.pdf` | [giganotosaurusgame](https://open.kattis.com/problems/giganotosaurusgame) | [32543](https://solved.ac/problems/32543) | | **H** | Human Pyramid | `bapc-prelim/2024/humanpyramid` | `bapc-prelim/2024/problems.pdf` | [humanpyramid](https://open.kattis.com/problems/humanpyramid) | [32544](https://solved.ac/problems/32544) | | **I** | Investment Investigation | `bapc-prelim/2024/investmentinvestigation` | `bapc-prelim/2024/problems.pdf` | [investmentinvestigation](https://open.kattis.com/problems/investmentinvestigation) | [32545](https://solved.ac/problems/32545) | | **J** | Joppiesaus Jailbreak | `bapc-prelim/2024/joppiesausjailbreak` | `bapc-prelim/2024/problems.pdf` | [joppiesausjailbreak](https://open.kattis.com/problems/joppiesausjailbreak) | [32546](https://solved.ac/problems/32546) | | **K** | Kitchens of Königsberg | `bapc-prelim/2024/kitchensofkonigsberg` | `bapc-prelim/2024/problems.pdf` | - | [32547](https://solved.ac/problems/32547) | | **L** | Lawful Limits | `bapc-prelim/2024/lawfullimits` | `bapc-prelim/2024/problems.pdf` | [lawfullimits](https://open.kattis.com/problems/lawfullimits) | [32548](https://solved.ac/problems/32548) | --- ## Central Europe Regional Contest (2007) - **Contest Slug:** `cerc` - **Year:** 2007 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/36) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------- | :-------------------- | :---------------------------------- | :----: | :-------------------------------------: | | **B** | Strange Billboard | `cerc/2007/billboard` | `cerc/2007/billboard/billboard.pdf` | - | [3436](https://solved.ac/problems/3436) | | **C** | Phone Cell | `cerc/2007/cell` | `cerc/2007/cell/cell.pdf` | - | [3437](https://solved.ac/problems/3437) | | **H** | Hexagonal Parcels | `cerc/2007/hexagon` | `cerc/2007/hexagon/hexagon.pdf` | - | [3438](https://solved.ac/problems/3438) | | **K** | Key Task | `cerc/2007/keys` | `cerc/2007/keys/keys.pdf` | - | [3439](https://solved.ac/problems/3439) | | **L** | Gates of Logic | `cerc/2007/logic` | `cerc/2007/logic/logic.pdf` | - | [3440](https://solved.ac/problems/3440) | | **N** | Weird Numbers | `cerc/2007/numbers` | `cerc/2007/numbers/numbers.pdf` | - | [3441](https://solved.ac/problems/3441) | | **P** | Rectangular Polygons | `cerc/2007/polygon` | `cerc/2007/polygon/polygon.pdf` | - | [3442](https://solved.ac/problems/3442) | | **PA** | Problem PA | - | - | - | [6612](https://solved.ac/problems/6612) | | **PB** | Problem PB | - | - | - | [3447](https://solved.ac/problems/3447) | | **PC** | Problem PC | - | - | - | [3448](https://solved.ac/problems/3448) | | **PD** | Problem PD | - | - | - | [3449](https://solved.ac/problems/3449) | | **PE** | Desperate Electrician | - | - | - | [3450](https://solved.ac/problems/3450) | | **R** | Reaux! Sham! Beaux! | `cerc/2007/roshambo` | `cerc/2007/roshambo/roshambo.pdf` | - | [3443](https://solved.ac/problems/3443) | | **S** | Robotic Sort | `cerc/2007/sort` | `cerc/2007/sort/sort.pdf` | - | [3444](https://solved.ac/problems/3444) | | **W** | Tough Water Level | `cerc/2007/water` | `cerc/2007/water/water.pdf` | - | [3445](https://solved.ac/problems/3445) | --- ## Central Europe Regional Contest (2012) - **Contest Slug:** `cerc` - **Year:** 2012 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Central%20Europe%20Regional%20Contest%20%28CERC%29%202012) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/33) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :---------------- | :------------------------------- | :-------------------------------------------------------------------------------: | :-------------------------------------: | | **A** | Kingdoms | `cerc/2012/a` | `cerc/2012/cerc2012problems.pdf` | [kingdoms](https://open.kattis.com/problems/kingdoms) | [3405](https://solved.ac/problems/3405) | | **B** | Who wants to live forever? | `cerc/2012/b` | `cerc/2012/cerc2012problems.pdf` | [whowantstoliveforever](https://open.kattis.com/problems/whowantstoliveforever) | [3406](https://solved.ac/problems/3406) | | **C** | Chemist's vows | `cerc/2012/c` | `cerc/2012/cerc2012problems.pdf` | [chemistsvows](https://open.kattis.com/problems/chemistsvows) | [3407](https://solved.ac/problems/3407) | | **D** | Non-boring sequences | `cerc/2012/d` | `cerc/2012/cerc2012problems.pdf` | [nonboringsequences](https://open.kattis.com/problems/nonboringsequences) | [3408](https://solved.ac/problems/3408) | | **E** | Word equations | `cerc/2012/e` | `cerc/2012/cerc2012problems.pdf` | [wordequations](https://open.kattis.com/problems/wordequations) | [3409](https://solved.ac/problems/3409) | | **F** | Farm and factory | `cerc/2012/f` | `cerc/2012/cerc2012problems.pdf` | - | [3410](https://solved.ac/problems/3410) | | **G** | Jewel heist | `cerc/2012/g` | `cerc/2012/cerc2012problems.pdf` | [jewelheist](https://open.kattis.com/problems/jewelheist) | [3411](https://solved.ac/problems/3411) | | **H** | Darts | `cerc/2012/h` | `cerc/2012/cerc2012problems.pdf` | [dartscores](https://open.kattis.com/problems/dartscores) | [3412](https://solved.ac/problems/3412) | | **I** | The Dragon and the knights | `cerc/2012/i` | `cerc/2012/cerc2012problems.pdf` | [thedragonandtheknights](https://open.kattis.com/problems/thedragonandtheknights) | [3413](https://solved.ac/problems/3413) | | **J** | Conservation | `cerc/2012/j` | `cerc/2012/cerc2012problems.pdf` | [conservation](https://open.kattis.com/problems/conservation) | [3414](https://solved.ac/problems/3414) | | **K** | Graphic Madness | `cerc/2012/k` | `cerc/2012/cerc2012problems.pdf` | [graphicmadness](https://open.kattis.com/problems/graphicmadness) | [3415](https://solved.ac/problems/3415) | --- ## Central Europe Regional Contest (2013) - **Contest Slug:** `cerc` - **Year:** 2013 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Central%20Europe%20Regional%20Contest%20%28CERC%29%202013) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1176) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------------------- | :---------------- | :------------------------------- | :---------------------------------------------------------------------: | :-------------------------------------: | | **A** | Rubik's Rectangle | `cerc/2013/a` | `cerc/2013/cerc2013problems.pdf` | [rubikrectangle](https://open.kattis.com/problems/rubikrectangle) | [9535](https://solved.ac/problems/9535) | | **B** | What does the fox say? | `cerc/2013/b` | `cerc/2013/cerc2013problems.pdf` | [whatdoesthefoxsay](https://open.kattis.com/problems/whatdoesthefoxsay) | [9536](https://solved.ac/problems/9536) | | **C** | Magical GCD | `cerc/2013/c` | `cerc/2013/cerc2013problems.pdf` | [magicalgcd](https://open.kattis.com/problems/magicalgcd) | [9537](https://solved.ac/problems/9537) | | **D** | Subway | `cerc/2013/d` | `cerc/2013/cerc2013problems.pdf` | [subway3](https://open.kattis.com/problems/subway3) | [9538](https://solved.ac/problems/9538) | | **E** | Escape | `cerc/2013/e` | `cerc/2013/cerc2013problems.pdf` | [escape](https://open.kattis.com/problems/escape) | [9539](https://solved.ac/problems/9539) | | **F** | Draughts | `cerc/2013/f` | `cerc/2013/cerc2013problems.pdf` | [draughts](https://open.kattis.com/problems/draughts) | [9540](https://solved.ac/problems/9540) | | **G** | History course | `cerc/2013/g` | `cerc/2013/cerc2013problems.pdf` | - | [9541](https://solved.ac/problems/9541) | | **H** | Chain & Co. | `cerc/2013/h` | `cerc/2013/cerc2013problems.pdf` | [chainco](https://open.kattis.com/problems/chainco) | [9542](https://solved.ac/problems/9542) | | **I** | Crane | `cerc/2013/i` | `cerc/2013/cerc2013problems.pdf` | [crane2](https://open.kattis.com/problems/crane2) | [9543](https://solved.ac/problems/9543) | | **J** | Captain Obvious and the Rabbit-Man | `cerc/2013/j` | `cerc/2013/cerc2013problems.pdf` | [captainobvious](https://open.kattis.com/problems/captainobvious) | [9544](https://solved.ac/problems/9544) | | **K** | Digraphs | `cerc/2013/k` | `cerc/2013/cerc2013problems.pdf` | [digraphs](https://open.kattis.com/problems/digraphs) | [9545](https://solved.ac/problems/9545) | | **L** | Bus | `cerc/2013/l` | `cerc/2013/cerc2013problems.pdf` | [bus](https://open.kattis.com/problems/bus) | [9546](https://solved.ac/problems/9546) | --- ## Central Europe Regional Contest (2014) - **Contest Slug:** `cerc` - **Year:** 2014 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Central%20Europe%20Regional%20Contest%20%28CERC%29%202014) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1310) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------- | :---------------- | :--------------------- | :---------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Parades | `cerc/2014/a` | `cerc/2014/a/a.pdf` | [parades](https://open.kattis.com/problems/parades) | [10502](https://solved.ac/problems/10502) | | **B** | Mountainous landscape | `cerc/2014/b` | `cerc/2014/b/b.pdf` | [mountainouslandscape](https://open.kattis.com/problems/mountainouslandscape) | [10503](https://solved.ac/problems/10503) | | **C** | Sums | `cerc/2014/c` | `cerc/2014/c/c.pdf` | [consecutivesums](https://open.kattis.com/problems/consecutivesums) | [10504](https://solved.ac/problems/10504) | | **D** | Wheels | `cerc/2014/d` | `cerc/2014/d/d.pdf` | [wheels](https://open.kattis.com/problems/wheels) | [10505](https://solved.ac/problems/10505) | | **E** | Can't stop playing | `cerc/2014/e` | `cerc/2014/e/e.pdf` | [cantstopplaying](https://open.kattis.com/problems/cantstopplaying) | [10506](https://solved.ac/problems/10506) | | **F** | Vocabulary | `cerc/2014/f` | `cerc/2014/f/f.pdf` | [vocabulary](https://open.kattis.com/problems/vocabulary) | [10507](https://solved.ac/problems/10507) | | **G** | Virus synthesis | `cerc/2014/g` | `cerc/2014/g/g.pdf` | [virussynthesis](https://open.kattis.com/problems/virussynthesis) | [10508](https://solved.ac/problems/10508) | | **H** | Good morning! | `cerc/2014/h` | `cerc/2014/h/h.pdf` | [goodmorning](https://open.kattis.com/problems/goodmorning) | [10509](https://solved.ac/problems/10509) | | **I** | Bricks | `cerc/2014/i` | `cerc/2014/i/i.pdf` | [brickpartition](https://open.kattis.com/problems/brickpartition) | [10510](https://solved.ac/problems/10510) | | **J** | Pork barrel | `cerc/2014/j` | `cerc/2014/j/j.pdf` | [porkbarrel](https://open.kattis.com/problems/porkbarrel) | [10511](https://solved.ac/problems/10511) | | **K** | The Imp | `cerc/2014/k` | `cerc/2014/k/k.pdf` | [theimp](https://open.kattis.com/problems/theimp) | [10512](https://solved.ac/problems/10512) | | **L** | Outer space invaders | `cerc/2014/l` | `cerc/2014/l/l.pdf` | [spaceinvaders](https://open.kattis.com/problems/spaceinvaders) | [10513](https://solved.ac/problems/10513) | --- ## Central Europe Regional Contest (2018) - **Contest Slug:** `cerc` - **Year:** 2018 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1978) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------------- | :-------------------- | :---------------------------------- | :----: | :---------------------------------------: | | **A** | The ABCD Murderer | `cerc/2018/abcd` | `cerc/2018/abcd/abcd.pdf` | - | [16694](https://solved.ac/problems/16694) | | **B** | The Bridge on the River Kawaii | `cerc/2018/bridge` | `cerc/2018/bridge/bridge.pdf` | - | [16695](https://solved.ac/problems/16695) | | **C** | Clockwork Orange | `cerc/2018/clockwork` | `cerc/2018/clockwork/clockwork.pdf` | - | [16696](https://solved.ac/problems/16696) | | **D** | Reservoir Dog | `cerc/2018/dog` | `cerc/2018/dog/dog.pdf` | - | [16697](https://solved.ac/problems/16697) | | **G** | Trees Gump | `cerc/2018/gump` | `cerc/2018/gump/gump.pdf` | - | [16698](https://solved.ac/problems/16698) | | **H** | Incredible Hull | `cerc/2018/hull` | `cerc/2018/hull/hull.pdf` | - | [16699](https://solved.ac/problems/16699) | | **I** | Shooter Island | `cerc/2018/island` | `cerc/2018/island/island.pdf` | - | [16700](https://solved.ac/problems/16700) | | **K** | The Lord of the Kings | `cerc/2018/king` | `cerc/2018/king/king.pdf` | - | [16701](https://solved.ac/problems/16701) | | **L** | The Silence of the Lamps | `cerc/2018/lamps` | `cerc/2018/lamps/lamps.pdf` | - | [16702](https://solved.ac/problems/16702) | | **M** | Matrice | `cerc/2018/matrice` | `cerc/2018/matrice/matrice.pdf` | - | [16703](https://solved.ac/problems/16703) | | **R** | Mirrority Report | `cerc/2018/report` | `cerc/2018/report/report.pdf` | - | [16704](https://solved.ac/problems/16704) | | **S** | Game of Stones | `cerc/2018/stones` | `cerc/2018/stones/stones.pdf` | - | [16705](https://solved.ac/problems/16705) | --- ## Central Europe Regional Contest (2019) - **Contest Slug:** `cerc` - **Year:** 2019 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2133) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------ | :--------------------- | :------------------------- | :----: | :---------------------------------------: | | **A** | ABB | `cerc/2019/abb` | `cerc/2019/cerc-final.pdf` | - | [18171](https://solved.ac/problems/18171) | | **B** | Be Geeks! | `cerc/2019/begeeks` | `cerc/2019/cerc-final.pdf` | - | [18172](https://solved.ac/problems/18172) | | **B2** | Bob in Wonderland | `cerc/2019/bob` | `cerc/2019/cerc-final.pdf` | - | [18173](https://solved.ac/problems/18173) | | **C** | Crimson Sexy Jalapeños | `cerc/2019/crimson` | `cerc/2019/cerc-final.pdf` | - | [18174](https://solved.ac/problems/18174) | | **D** | Deep800080 | `cerc/2019/deep` | `cerc/2019/cerc-final.pdf` | - | [18175](https://solved.ac/problems/18175) | | **G** | Zeldain Garden | `cerc/2019/garden` | `cerc/2019/cerc-final.pdf` | - | [18176](https://solved.ac/problems/18176) | | **H** | Light Emitting Hindenburg | `cerc/2019/hindenburg` | `cerc/2019/cerc-final.pdf` | - | [18177](https://solved.ac/problems/18177) | | **K** | K==S | `cerc/2019/kequalss` | `cerc/2019/cerc-final.pdf` | - | [18178](https://solved.ac/problems/18178) | | **P** | Ponk Warshall | `cerc/2019/ponk` | `cerc/2019/cerc-final.pdf` | - | [18179](https://solved.ac/problems/18179) | | **S** | Saba1000kg | `cerc/2019/saba` | `cerc/2019/cerc-final.pdf` | - | [18180](https://solved.ac/problems/18180) | | **S2** | Screamers in the Storm | `cerc/2019/screamers` | `cerc/2019/cerc-final.pdf` | - | [18181](https://solved.ac/problems/18181) | | **T** | The Bugs | `cerc/2019/thebugs` | `cerc/2019/cerc-final.pdf` | - | [18182](https://solved.ac/problems/18182) | --- ## Central Europe Regional Contest (2020) - **Contest Slug:** `cerc` - **Year:** 2020 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2795) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------- | :---------------------- | :---------------------------------- | :----: | :---------------------------------------: | | **A** | Art Transaction | `cerc/2020/art` | `cerc/2020/art/problem.pdf` | - | [23092](https://solved.ac/problems/23092) | | **B** | Bank Robbery | `cerc/2020/bank` | `cerc/2020/bank/problem.pdf` | - | [23093](https://solved.ac/problems/23093) | | **C** | Pizzo Collectors | `cerc/2020/collectors` | `cerc/2020/collectors/problem.pdf` | - | [23094](https://solved.ac/problems/23094) | | **E** | Excavation | `cerc/2020/excavation` | `cerc/2020/excavation/problem.pdf` | - | [23095](https://solved.ac/problems/23095) | | **G** | Tobacco Growing | `cerc/2020/growing` | `cerc/2020/growing/problem.pdf` | - | [23096](https://solved.ac/problems/23096) | | **M** | Rescue Mission | `cerc/2020/mission` | `cerc/2020/mission/problem.pdf` | - | [23097](https://solved.ac/problems/23097) | | **O** | Offices | `cerc/2020/offices` | `cerc/2020/offices/problem.pdf` | - | [23098](https://solved.ac/problems/23098) | | **P** | Pickpockets | `cerc/2020/pickpockets` | `cerc/2020/pickpockets/problem.pdf` | - | [23099](https://solved.ac/problems/23099) | | **R** | Roof Escape | `cerc/2020/roof` | `cerc/2020/roof/problem.pdf` | - | [23101](https://solved.ac/problems/23101) | | **S** | Screamers | `cerc/2020/screamers` | `cerc/2020/screamers/problem.pdf` | - | [23102](https://solved.ac/problems/23102) | --- ## Central Europe Regional Contest (2021) - **Contest Slug:** `cerc` - **Year:** 2021 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/3108) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------- | :-------------------------------- | :------------------------------- | :----: | :---------------------------------------: | | **A** | Airline | `cerc/2021/A-airline` | `cerc/2021/CERC2021-contest.pdf` | - | [25102](https://solved.ac/problems/25102) | | **B** | Building on the Moon | `cerc/2021/B-dark-side` | `cerc/2021/CERC2021-contest.pdf` | - | [25103](https://solved.ac/problems/25103) | | **C** | Cactus cutting | `cerc/2021/C-cactuscutting` | `cerc/2021/CERC2021-contest.pdf` | - | [25104](https://solved.ac/problems/25104) | | **D** | DJ Darko | `cerc/2021/D-djdarko` | `cerc/2021/CERC2021-contest.pdf` | - | [25105](https://solved.ac/problems/25105) | | **E** | Fishing | `cerc/2021/E-fishing` | `cerc/2021/CERC2021-contest.pdf` | - | [25106](https://solved.ac/problems/25106) | | **F** | Letters | `cerc/2021/F-letters` | `cerc/2021/CERC2021-contest.pdf` | - | [25107](https://solved.ac/problems/25107) | | **G** | Lines in a grid | `cerc/2021/G-unique-lines` | `cerc/2021/CERC2021-contest.pdf` | - | [25108](https://solved.ac/problems/25108) | | **H** | Radar | `cerc/2021/H-radar` | `cerc/2021/CERC2021-contest.pdf` | - | [25109](https://solved.ac/problems/25109) | | **I** | Regional development | `cerc/2021/I-regional` | `cerc/2021/CERC2021-contest.pdf` | - | [25110](https://solved.ac/problems/25110) | | **J** | Repetitions | `cerc/2021/J-repetitions` | `cerc/2021/CERC2021-contest.pdf` | - | [25111](https://solved.ac/problems/25111) | | **K** | Single-track railway | `cerc/2021/K-vlaka` | `cerc/2021/CERC2021-contest.pdf` | - | [25112](https://solved.ac/problems/25112) | | **L** | Systematic salesman | `cerc/2021/L-systematic_salesman` | `cerc/2021/CERC2021-contest.pdf` | - | [25113](https://solved.ac/problems/25113) | --- ## Central Europe Regional Contest (2022) - **Contest Slug:** `cerc` - **Year:** 2022 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/3238) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------- | :----------------------------- | :--------------------------- | :----: | :---------------------------------------: | | **A** | Bandits | `cerc/2022/A-bandits` | `cerc/2022/CERC22-tasks.pdf` | - | [26186](https://solved.ac/problems/26186) | | **B** | Combination Locks | `cerc/2022/B-locks` | `cerc/2022/CERC22-tasks.pdf` | - | [26187](https://solved.ac/problems/26187) | | **C** | Constellations | `cerc/2022/C-constellations` | `cerc/2022/CERC22-tasks.pdf` | - | [26188](https://solved.ac/problems/26188) | | **D** | Deforestation | `cerc/2022/D-deforestation` | `cerc/2022/CERC22-tasks.pdf` | - | [26189](https://solved.ac/problems/26189) | | **E** | Denormalization | `cerc/2022/E-normalization` | `cerc/2022/CERC22-tasks.pdf` | - | [26190](https://solved.ac/problems/26190) | | **F** | Differences | `cerc/2022/F-differences` | `cerc/2022/CERC22-tasks.pdf` | - | [26191](https://solved.ac/problems/26191) | | **G** | Greedy Drawers | `cerc/2022/G-drawers` | `cerc/2022/CERC22-tasks.pdf` | - | [26192](https://solved.ac/problems/26192) | | **H** | Insertions | `cerc/2022/H-insertions` | `cerc/2022/CERC22-tasks.pdf` | - | [26193](https://solved.ac/problems/26193) | | **I** | Money Laundering | `cerc/2022/I-money_laundering` | `cerc/2022/CERC22-tasks.pdf` | - | [26194](https://solved.ac/problems/26194) | | **J** | Mortgage | `cerc/2022/J-mortgage` | `cerc/2022/CERC22-tasks.pdf` | - | [26195](https://solved.ac/problems/26195) | | **K** | Skills in Pills | `cerc/2022/K-pills` | `cerc/2022/CERC22-tasks.pdf` | - | [26196](https://solved.ac/problems/26196) | | **L** | The Game | `cerc/2022/L-game` | `cerc/2022/CERC22-tasks.pdf` | - | [26197](https://solved.ac/problems/26197) | --- ## Central Europe Regional Contest (2023) - **Contest Slug:** `cerc` - **Year:** 2023 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4073) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :------------------------------------- | :------------------------------- | :----: | :---------------------------------------: | | **A** | Attendance | `cerc/2023/attendance` | `cerc/2023/CERC2023-contest.pdf` | - | [30945](https://solved.ac/problems/30945) | | **B** | Ball Passing | `cerc/2023/ball-passing` | `cerc/2023/CERC2023-contest.pdf` | - | [30946](https://solved.ac/problems/30946) | | **C** | Cakes | `cerc/2023/cakes` | `cerc/2023/CERC2023-contest.pdf` | - | [30947](https://solved.ac/problems/30947) | | **D** | Drying Laundry | `cerc/2023/laundry` | `cerc/2023/CERC2023-contest.pdf` | - | [30948](https://solved.ac/problems/30948) | | **E** | Equal Schedules | `cerc/2023/schedules` | `cerc/2023/CERC2023-contest.pdf` | - | [30949](https://solved.ac/problems/30949) | | **F** | Phylogenetics | `cerc/2023/phylogenetics` | `cerc/2023/CERC2023-contest.pdf` | - | [30950](https://solved.ac/problems/30950) | | **G** | Going to the Moon | `cerc/2023/moon` | `cerc/2023/CERC2023-contest.pdf` | - | [30951](https://solved.ac/problems/30951) | | **H** | Human Resources | `cerc/2023/human-resources` | `cerc/2023/CERC2023-contest.pdf` | - | [30952](https://solved.ac/problems/30952) | | **I** | Interactive Reconstruction | `cerc/2023/interactive-reconstruction` | `cerc/2023/CERC2023-contest.pdf` | - | [30953](https://solved.ac/problems/30953) | | **J** | Jumbled Stacks | `cerc/2023/jumbled-stacks` | `cerc/2023/CERC2023-contest.pdf` | - | [30954](https://solved.ac/problems/30954) | | **K** | Keys | `cerc/2023/keys` | `cerc/2023/CERC2023-contest.pdf` | - | [30955](https://solved.ac/problems/30955) | | **L** | Labelled Paths | `cerc/2023/labelled-paths` | `cerc/2023/CERC2023-contest.pdf` | - | [30956](https://solved.ac/problems/30956) | --- ## East Central North America Regional Contest (2001) - **Contest Slug:** `ecna` - **Year:** 2001 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/885) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------- | :---------------- | :--------------------- | :----: | :-------------------------------------: | | **A** | What's In A Name? | `ecna/2001/A` | `ecna/2001/real.pdf` | - | [7351](https://solved.ac/problems/7351) | | **B** | Sorting It All Out | `ecna/2001/B` | `ecna/2001/real.pdf` | - | [7352](https://solved.ac/problems/7352) | | **C** | Web Navigation | `ecna/2001/C` | `ecna/2001/real.pdf` | - | [7353](https://solved.ac/problems/7353) | | **D** | Trees Made to Order | `ecna/2001/D` | `ecna/2001/real.pdf` | - | [7354](https://solved.ac/problems/7354) | | **E** | Space Station Shielding | `ecna/2001/E` | `ecna/2001/real.pdf` | - | [7355](https://solved.ac/problems/7355) | | **F** | Roads Scholar | `ecna/2001/F` | `ecna/2001/real.pdf` | - | [7356](https://solved.ac/problems/7356) | | **G** | Robots | `ecna/2001/G` | `ecna/2001/real.pdf` | - | [7357](https://solved.ac/problems/7357) | | **H** | Square Ice | `ecna/2001/H` | `ecna/2001/real.pdf` | - | [7358](https://solved.ac/problems/7358) | --- ## East Central North America Regional Contest (2003) - **Contest Slug:** `ecna` - **Year:** 2003 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/123) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------ | :---------------- | :--------------------- | :----: | :-------------------------------------: | | **A** | Crypto Columns | `ecna/2003/A` | `ecna/2003/real.pdf` | - | [2149](https://solved.ac/problems/2149) | | **B** | Decorations | `ecna/2003/B` | `ecna/2003/real.pdf` | - | [2319](https://solved.ac/problems/2319) | | **C** | EKG Sequence | `ecna/2003/C` | `ecna/2003/real.pdf` | - | [4250](https://solved.ac/problems/4250) | | **D** | Phone Home | `ecna/2003/D` | `ecna/2003/real.pdf` | - | [2349](https://solved.ac/problems/2349) | | **E** | Polly Nomials | `ecna/2003/E` | `ecna/2003/real.pdf` | - | [2200](https://solved.ac/problems/2200) | | **F** | Pushing Boxes | `ecna/2003/F` | `ecna/2003/real.pdf` | - | [4253](https://solved.ac/problems/4253) | | **G** | Squadtrees | `ecna/2003/G` | `ecna/2003/real.pdf` | - | [1998](https://solved.ac/problems/1998) | | **H** | This Takes the Cake | `ecna/2003/H` | `ecna/2003/real.pdf` | - | [2175](https://solved.ac/problems/2175) | --- ## East Central North America Regional Contest (2004) - **Contest Slug:** `ecna` - **Year:** 2004 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/122) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------- | :---------------- | :--------------------- | :----: | :-------------------------------------: | | **A** | Alphacode | `ecna/2004/A` | `ecna/2004/real.pdf` | - | [2011](https://solved.ac/problems/2011) | | **B** | Anti-prime Sequences | `ecna/2004/B` | `ecna/2004/real.pdf` | - | [4241](https://solved.ac/problems/4241) | | **C** | Hit or Miss | `ecna/2004/C` | `ecna/2004/real.pdf` | - | [4242](https://solved.ac/problems/4242) | | **D** | I Conduit! | `ecna/2004/D` | `ecna/2004/real.pdf` | - | [2013](https://solved.ac/problems/2013) | | **E** | Roll Playing Games | `ecna/2004/E` | `ecna/2004/real.pdf` | - | [4244](https://solved.ac/problems/4244) | | **F** | Team Rankings | `ecna/2004/F` | `ecna/2004/real.pdf` | - | [4245](https://solved.ac/problems/4245) | | **G** | To and Fro | `ecna/2004/G` | `ecna/2004/real.pdf` | - | [4246](https://solved.ac/problems/4246) | | **H** | Translations | `ecna/2004/H` | `ecna/2004/real.pdf` | - | [4247](https://solved.ac/problems/4247) | --- ## East Central North America Regional Contest (2005) - **Contest Slug:** `ecna` - **Year:** 2005 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/121) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------ | :---------------- | :--------------------- | :----: | :-------------------------------------: | | **A** | ACM (ACronym Maker) | `ecna/2005/A` | `ecna/2005/real.pdf` | - | [4074](https://solved.ac/problems/4074) | | **B** | Countdown | `ecna/2005/B` | `ecna/2005/real.pdf` | - | [4075](https://solved.ac/problems/4075) | | **C** | The Game of Efil | `ecna/2005/C` | `ecna/2005/real.pdf` | - | [4076](https://solved.ac/problems/4076) | | **D** | Queens, Knights and Pawns | `ecna/2005/D` | `ecna/2005/real.pdf` | - | [1986](https://solved.ac/problems/1986) | | **E** | Reliable Nets | `ecna/2005/E` | `ecna/2005/real.pdf` | - | [4077](https://solved.ac/problems/4077) | | **F** | Square Count | `ecna/2005/F` | `ecna/2005/real.pdf` | - | [4078](https://solved.ac/problems/4078) | | **G** | Swamp Things | `ecna/2005/G` | `ecna/2005/real.pdf` | - | [4079](https://solved.ac/problems/4079) | | **H** | Two Ends | `ecna/2005/H` | `ecna/2005/real.pdf` | - | [4080](https://solved.ac/problems/4080) | --- ## East Central North America Regional Contest (2006) - **Contest Slug:** `ecna` - **Year:** 2006 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/120) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------------------------------------------------------------- | :---------------- | :--------------------- | :----: | :-------------------------------------: | | **A** | Caterpillar | `ecna/2006/A` | `ecna/2006/real.pdf` | - | [4068](https://solved.ac/problems/4068) | | **B** | Hie with the Pie | `ecna/2006/B` | `ecna/2006/real.pdf` | - | [4069](https://solved.ac/problems/4069) | | **C** | Mahershalalhashbaz, Nebuchadnezzar, and Billy Bob Benjamin Go to the Regionals | `ecna/2006/C` | `ecna/2006/real.pdf` | - | [4070](https://solved.ac/problems/4070) | | **D** | The Mastermind Master's Mind | `ecna/2006/D` | `ecna/2006/real.pdf` | - | [4071](https://solved.ac/problems/4071) | | **E** | Plaque Pack | `ecna/2006/E` | `ecna/2006/real.pdf` | - | [1997](https://solved.ac/problems/1997) | | **F** | Roofing It | `ecna/2006/F` | `ecna/2006/real.pdf` | - | [1870](https://solved.ac/problems/1870) | | **G** | Snakes on a Plane | `ecna/2006/G` | `ecna/2006/real.pdf` | - | [2039](https://solved.ac/problems/2039) | | **H** | Stake Your Claim | `ecna/2006/H` | `ecna/2006/real.pdf` | - | [4073](https://solved.ac/problems/4073) | --- ## East Central North America Regional Contest (2007) - **Contest Slug:** `ecna` - **Year:** 2007 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/119) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------------------------------- | :---------------- | :--------------------- | :----: | :-------------------------------------: | | **A** | CIVIC DILL MIX | `ecna/2007/A` | `ecna/2007/real.pdf` | - | [4060](https://solved.ac/problems/4060) | | **B** | A Foldy but a Goody | `ecna/2007/B` | `ecna/2007/real.pdf` | - | [4061](https://solved.ac/problems/4061) | | **C** | Give Me an E | `ecna/2007/C` | `ecna/2007/real.pdf` | - | [4062](https://solved.ac/problems/4062) | | **D** | Lemmings, Lemmings Everywhere. But Not For Long. | `ecna/2007/D` | `ecna/2007/real.pdf` | - | [4063](https://solved.ac/problems/4063) | | **E** | Once Around the Lock | `ecna/2007/E` | `ecna/2007/real.pdf` | - | [4064](https://solved.ac/problems/4064) | | **F** | A Puzzling Problem | `ecna/2007/F` | `ecna/2007/real.pdf` | - | [4065](https://solved.ac/problems/4065) | | **G** | And Now, a Remainder from Our Sponsor | `ecna/2007/G` | `ecna/2007/real.pdf` | - | [4066](https://solved.ac/problems/4066) | | **H** | Target Practice | `ecna/2007/H` | `ecna/2007/real.pdf` | - | [4067](https://solved.ac/problems/4067) | --- ## East Central North America Regional Contest (2008) - **Contest Slug:** `ecna` - **Year:** 2008 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/118) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------------- | :---------------- | :--------------------- | :----: | :-------------------------------------: | | **A** | Bordering on Madness | `ecna/2008/A` | `ecna/2008/2008.pdf` | - | [4052](https://solved.ac/problems/4052) | | **B** | Jack of All Trades | `ecna/2008/B` | `ecna/2008/2008.pdf` | - | [4053](https://solved.ac/problems/4053) | | **C** | LCR | `ecna/2008/C` | `ecna/2008/2008.pdf` | - | [4054](https://solved.ac/problems/4054) | | **D** | Party Party Party | `ecna/2008/D` | `ecna/2008/2008.pdf` | - | [4055](https://solved.ac/problems/4055) | | **E** | Su-Su-Sudoku | `ecna/2008/E` | `ecna/2008/2008.pdf` | - | [4056](https://solved.ac/problems/4056) | | **F** | Tanks a Lot | `ecna/2008/F` | `ecna/2008/2008.pdf` | - | [4057](https://solved.ac/problems/4057) | | **G** | The Worm Turns | `ecna/2008/G` | `ecna/2008/2008.pdf` | - | [4058](https://solved.ac/problems/4058) | | **H** | You'll be Working on the Railroad | `ecna/2008/H` | `ecna/2008/2008.pdf` | - | [4059](https://solved.ac/problems/4059) | --- ## East Central North America Regional Contest (2009) - **Contest Slug:** `ecna` - **Year:** 2009 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/117) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------------------ | :---------------- | :--------------------- | :----: | :-------------------------------------: | | **A** | Arithmetically Challenged | `ecna/2009/A` | `ecna/2009/2009.pdf` | - | [4044](https://solved.ac/problems/4044) | | **B** | Cover Up | `ecna/2009/B` | `ecna/2009/2009.pdf` | - | [4045](https://solved.ac/problems/4045) | | **C** | Decompressing in a GIF | `ecna/2009/C` | `ecna/2009/2009.pdf` | - | [4046](https://solved.ac/problems/4046) | | **D** | Flipper | `ecna/2009/D` | `ecna/2009/2009.pdf` | - | [4047](https://solved.ac/problems/4047) | | **E** | The Flood | `ecna/2009/E` | `ecna/2009/2009.pdf` | - | [4048](https://solved.ac/problems/4048) | | **F** | Here's a Product Which Will Make You Tensor | `ecna/2009/F` | `ecna/2009/2009.pdf` | - | [4049](https://solved.ac/problems/4049) | | **G** | Trip the Lights Fantastic | `ecna/2009/G` | `ecna/2009/2009.pdf` | - | [4050](https://solved.ac/problems/4050) | | **H** | Windows | `ecna/2009/H` | `ecna/2009/2009.pdf` | - | [4051](https://solved.ac/problems/4051) | --- ## East Central North America Regional Contest (2010) - **Contest Slug:** `ecna` - **Year:** 2010 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/116) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------ | :---------------- | :--------------------- | :----: | :-------------------------------------: | | **A** | Cut It Out! | `ecna/2010/A` | `ecna/2010/2010.pdf` | - | [4036](https://solved.ac/problems/4036) | | **B** | Flip It! | `ecna/2010/B` | `ecna/2010/2010.pdf` | - | [4037](https://solved.ac/problems/4037) | | **C** | Maze | `ecna/2010/C` | `ecna/2010/2010.pdf` | - | [4038](https://solved.ac/problems/4038) | | **D** | Photo Shoot | `ecna/2010/D` | `ecna/2010/2010.pdf` | - | [4039](https://solved.ac/problems/4039) | | **E** | Polar Bear | `ecna/2010/E` | `ecna/2010/2010.pdf` | - | [4040](https://solved.ac/problems/4040) | | **F** | Pro-Test Voting | `ecna/2010/F` | `ecna/2010/2010.pdf` | - | [4041](https://solved.ac/problems/4041) | | **G** | Vampires! | `ecna/2010/G` | `ecna/2010/2010.pdf` | - | [4042](https://solved.ac/problems/4042) | | **H** | We've Got Chemistry, Babe | `ecna/2010/H` | `ecna/2010/2010.pdf` | - | [4043](https://solved.ac/problems/4043) | --- ## East Central North America Regional Contest (2011) - **Contest Slug:** `ecna` - **Year:** 2011 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/115) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------ | :---------------- | :--------------------- | :----: | :-------------------------------------: | | **A** | The Agency | `ecna/2011/A` | `ecna/2011/2011.pdf` | - | [4027](https://solved.ac/problems/4027) | | **B** | Chain of Fools | `ecna/2011/B` | `ecna/2011/2011.pdf` | - | [4028](https://solved.ac/problems/4028) | | **C** | Condorcet Winners | `ecna/2011/C` | `ecna/2011/2011.pdf` | - | [4029](https://solved.ac/problems/4029) | | **D** | Everyone out of the Pool | `ecna/2011/D` | `ecna/2011/2011.pdf` | - | [4030](https://solved.ac/problems/4030) | | **E** | The Banzhaf Buzz-Off | `ecna/2011/E` | `ecna/2011/2011.pdf` | - | [4031](https://solved.ac/problems/4031) | | **F** | GPS I Love You | `ecna/2011/F` | `ecna/2011/2011.pdf` | - | [4032](https://solved.ac/problems/4032) | | **G** | Have You Driven a Fjord Lately? | `ecna/2011/G` | `ecna/2011/2011.pdf` | - | [4033](https://solved.ac/problems/4033) | | **H** | Mobile | `ecna/2011/H` | `ecna/2011/2011.pdf` | - | [4034](https://solved.ac/problems/4034) | | **I** | Wally World | `ecna/2011/I` | `ecna/2011/2011.pdf` | - | [4035](https://solved.ac/problems/4035) | --- ## East Central North America Regional Contest (2012) - **Contest Slug:** `ecna` - **Year:** 2012 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/114) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :---------------- | :--------------------- | :----: | :-------------------------------------: | | **A** | Babs' Box Boutique | `ecna/2012/A` | `ecna/2012/2012.pdf` | - | [4018](https://solved.ac/problems/4018) | | **B** | Flash Mob | `ecna/2012/B` | `ecna/2012/2012.pdf` | - | [4019](https://solved.ac/problems/4019) | | **C** | Hexagon Perplexagon | `ecna/2012/C` | `ecna/2012/2012.pdf` | - | [4020](https://solved.ac/problems/4020) | | **D** | I've Got Your Back(gammon) | `ecna/2012/D` | `ecna/2012/2012.pdf` | - | [4021](https://solved.ac/problems/4021) | | **E** | Parencedence! | `ecna/2012/E` | `ecna/2012/2012.pdf` | - | [4022](https://solved.ac/problems/4022) | | **F** | Road Series | `ecna/2012/F` | `ecna/2012/2012.pdf` | - | [4023](https://solved.ac/problems/4023) | | **G** | Show Me the Money | `ecna/2012/G` | `ecna/2012/2012.pdf` | - | [4024](https://solved.ac/problems/4024) | | **H** | Sofa, So Good | `ecna/2012/H` | `ecna/2012/2012.pdf` | - | [4025](https://solved.ac/problems/4025) | | **I** | Town Square | `ecna/2012/I` | `ecna/2012/2012.pdf` | - | [4026](https://solved.ac/problems/4026) | --- ## East Central North America Regional Contest (2013) - **Contest Slug:** `ecna` - **Year:** 2013 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1214) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------------- | :---------------- | :----------------------- | :----: | :-------------------------------------: | | **A** | Battleships | `ecna/2013/A` | `ecna/2013/ecna2013.pdf` | - | [9854](https://solved.ac/problems/9854) | | **B** | Cuckoo for Hashing | `ecna/2013/B` | `ecna/2013/ecna2013.pdf` | - | [9855](https://solved.ac/problems/9855) | | **C** | Playing Fair with Cryptography | `ecna/2013/C` | `ecna/2013/ecna2013.pdf` | - | [9856](https://solved.ac/problems/9856) | | **D** | Rent-A-Pixel | `ecna/2013/D` | `ecna/2013/ecna2013.pdf` | - | [9857](https://solved.ac/problems/9857) | | **E** | Stampede! | `ecna/2013/E` | `ecna/2013/ecna2013.pdf` | - | [9858](https://solved.ac/problems/9858) | | **F** | Super Phyllis | `ecna/2013/F` | `ecna/2013/ecna2013.pdf` | - | [9859](https://solved.ac/problems/9859) | | **G** | Tree Lighting | `ecna/2013/G` | `ecna/2013/ecna2013.pdf` | - | [9860](https://solved.ac/problems/9860) | | **H** | The Urge to Merge | `ecna/2013/H` | `ecna/2013/ecna2013.pdf` | - | [9861](https://solved.ac/problems/9861) | | **I** | Xenospeak | `ecna/2013/I` | `ecna/2013/ecna2013.pdf` | - | [9862](https://solved.ac/problems/9862) | --- ## East Central North America Regional Contest (2014) - **Contest Slug:** `ecna` - **Year:** 2014 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1296) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :---------------- | :----------------------- | :----: | :---------------------------------------: | | **A** | Continued Fractions | `ecna/2014/A` | `ecna/2014/ecna2014.pdf` | - | [10386](https://solved.ac/problems/10386) | | **B** | A Cure for the Common Code | `ecna/2014/B` | `ecna/2014/ecna2014.pdf` | - | [10387](https://solved.ac/problems/10387) | | **C** | Domiyahtzee! | `ecna/2014/C` | `ecna/2014/ecna2014.pdf` | - | [10388](https://solved.ac/problems/10388) | | **D** | Generalized Roman Numerals | `ecna/2014/D` | `ecna/2014/ecna2014.pdf` | - | [10389](https://solved.ac/problems/10389) | | **E** | Inspectors | `ecna/2014/E` | `ecna/2014/ecna2014.pdf` | - | [10390](https://solved.ac/problems/10390) | | **F** | Path of Least Persistence | `ecna/2014/F` | `ecna/2014/ecna2014.pdf` | - | [10391](https://solved.ac/problems/10391) | | **G** | Speed Skills | `ecna/2014/G` | `ecna/2014/ecna2014.pdf` | - | [10392](https://solved.ac/problems/10392) | | **H** | Time Warp | `ecna/2014/H` | `ecna/2014/ecna2014.pdf` | - | [10393](https://solved.ac/problems/10393) | | **I** | Watch, Man! | `ecna/2014/I` | `ecna/2014/ecna2014.pdf` | - | [10394](https://solved.ac/problems/10394) | --- ## East Central North America Regional Contest (2015) - **Contest Slug:** `ecna` - **Year:** 2015 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2015%20ICPC%20East-Central%20NA%20Regional%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1441) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------ | :------------------------- | :----------------------- | :---------------------------------------------------------------: | :---------------------------------------: | | **A** | Being Solarly Systematic | `ecna/2015/solarly` | `ecna/2015/ecna2015.pdf` | [solarly](https://open.kattis.com/problems/solarly) | [11763](https://solved.ac/problems/11763) | | **B** | Delete This! | `ecna/2015/deletethis` | `ecna/2015/ecna2015.pdf` | [deletethis](https://open.kattis.com/problems/deletethis) | [11764](https://solved.ac/problems/11764) | | **C** | KenKen You Do It? | `ecna/2015/kenken` | `ecna/2015/ecna2015.pdf` | - | [11765](https://solved.ac/problems/11765) | | **D** | Rings | `ecna/2015/rings2` | `ecna/2015/ecna2015.pdf` | [rings2](https://open.kattis.com/problems/rings2) | [11766](https://solved.ac/problems/11766) | | **E** | Squawk Virus | `ecna/2015/squawk` | `ecna/2015/ecna2015.pdf` | [squawk](https://open.kattis.com/problems/squawk) | [11767](https://solved.ac/problems/11767) | | **F** | Transportation Delegation | `ecna/2015/transportation` | `ecna/2015/ecna2015.pdf` | [transportation](https://open.kattis.com/problems/transportation) | [11768](https://solved.ac/problems/11768) | | **G** | Tray Bien | `ecna/2015/tray` | `ecna/2015/ecna2015.pdf` | [tray](https://open.kattis.com/problems/tray) | [11769](https://solved.ac/problems/11769) | | **H** | Trick Shot | `ecna/2015/trickshot` | `ecna/2015/ecna2015.pdf` | [trickshot](https://open.kattis.com/problems/trickshot) | [11770](https://solved.ac/problems/11770) | | **I** | What's on the Grille? | `ecna/2015/grille` | `ecna/2015/ecna2015.pdf` | [grille](https://open.kattis.com/problems/grille) | [11771](https://solved.ac/problems/11771) | --- ## East Central North America Regional Contest (2016) - **Contest Slug:** `ecna` - **Year:** 2016 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2016%20ICPC%20East-Central%20NA%20Regional%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1788) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------- | :---------------------- | :----------------------- | :-------------------------------------------------------------: | :---------------------------------------: | | **A** | Bubbly Troubly | `ecna/2016/champagne` | `ecna/2016/ecna2016.pdf` | [bubblytroubly](https://open.kattis.com/problems/bubblytroubly) | [15069](https://solved.ac/problems/15069) | | **B** | Foosball Dynasty | `ecna/2016/foosball` | `ecna/2016/ecna2016.pdf` | [foosball](https://open.kattis.com/problems/foosball) | [15070](https://solved.ac/problems/15070) | | **C** | The Key to Cryptography | `ecna/2016/key` | `ecna/2016/ecna2016.pdf` | [keytocrypto](https://open.kattis.com/problems/keytocrypto) | [15071](https://solved.ac/problems/15071) | | **D** | Lost in Translation | `ecna/2016/lost` | `ecna/2016/ecna2016.pdf` | [lost](https://open.kattis.com/problems/lost) | [15072](https://solved.ac/problems/15072) | | **E** | Red Rover | `ecna/2016/redrover` | `ecna/2016/ecna2016.pdf` | [redrover](https://open.kattis.com/problems/redrover) | [15073](https://solved.ac/problems/15073) | | **F** | Removal Game | `ecna/2016/removalgame` | `ecna/2016/ecna2016.pdf` | [removalgame](https://open.kattis.com/problems/removalgame) | [15074](https://solved.ac/problems/15074) | | **G** | That's One Hanoi-ed Teacher | `ecna/2016/thathanoi` | `ecna/2016/ecna2016.pdf` | [thathanoi](https://open.kattis.com/problems/thathanoi) | [15075](https://solved.ac/problems/15075) | | **H** | Vin Diagrams | `ecna/2016/vin` | `ecna/2016/ecna2016.pdf` | [vindiagrams](https://open.kattis.com/problems/vindiagrams) | [15076](https://solved.ac/problems/15076) | | **I** | Waif Until Dark | `ecna/2016/waif` | `ecna/2016/ecna2016.pdf` | [waif](https://open.kattis.com/problems/waif) | [15077](https://solved.ac/problems/15077) | | **J** | Yes, Yes, It's Nonograms | `ecna/2016/yesyes` | `ecna/2016/ecna2016.pdf` | [yesyes](https://open.kattis.com/problems/yesyes) | [15078](https://solved.ac/problems/15078) | --- ## East Central North America Regional Contest (2017) - **Contest Slug:** `ecna` - **Year:** 2017 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2017%20ICPC%20East-Central%20NA%20Regional%20Practice%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1789) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------ | :---------------------- | :----------------------- | :---------------------------------------------------------: | :---------------------------------------: | | **A** | Abstract Art | `ecna/2017/abstractart` | `ecna/2017/ecna2017.pdf` | [abstractart](https://open.kattis.com/problems/abstractart) | [15085](https://solved.ac/problems/15085) | | **B** | Craters | `ecna/2017/craters` | `ecna/2017/ecna2017.pdf` | [craters](https://open.kattis.com/problems/craters) | [15086](https://solved.ac/problems/15086) | | **C** | DRM Messages | `ecna/2017/drmmessages` | `ecna/2017/ecna2017.pdf` | [drmmessages](https://open.kattis.com/problems/drmmessages) | [15087](https://solved.ac/problems/15087) | | **D** | Game of Throwns | `ecna/2017/throwns` | `ecna/2017/ecna2017.pdf` | [throwns](https://open.kattis.com/problems/throwns) | [15088](https://solved.ac/problems/15088) | | **E** | Is-A? Has-A? Who Knowz-A? | `ecna/2017/isahasa` | `ecna/2017/ecna2017.pdf` | [isahasa](https://open.kattis.com/problems/isahasa) | [15089](https://solved.ac/problems/15089) | | **F** | Keeping On Track | `ecna/2017/ontrack` | `ecna/2017/ecna2017.pdf` | [ontrack](https://open.kattis.com/problems/ontrack) | [15090](https://solved.ac/problems/15090) | | **G** | A Question of Ingestion | `ecna/2017/ingestion` | `ecna/2017/ecna2017.pdf` | [ingestion](https://open.kattis.com/problems/ingestion) | [15091](https://solved.ac/problems/15091) | | **H** | Sheba's Amoebas | `ecna/2017/amoebas` | `ecna/2017/ecna2017.pdf` | [amoebas](https://open.kattis.com/problems/amoebas) | [15092](https://solved.ac/problems/15092) | | **I** | Twenty Four, Again | `ecna/2017/twentyfour` | `ecna/2017/ecna2017.pdf` | [twentyfour](https://open.kattis.com/problems/twentyfour) | [15093](https://solved.ac/problems/15093) | | **J** | Workout for a Dumbbell | `ecna/2017/workout` | `ecna/2017/ecna2017.pdf` | [workout](https://open.kattis.com/problems/workout) | [15094](https://solved.ac/problems/15094) | --- ## East Central North America Regional Contest (2018) - **Contest Slug:** `ecna` - **Year:** 2018 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2018%20ICPC%20East-Central%20NA%20Regional%20Practice%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2001) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------------- | :------------------------------------ | :----------------------- | :----: | :---------------------------------------: | | **A** | Car Vet | `ecna/2018/carvet` | `ecna/2018/ecna2018.pdf` | - | [16866](https://solved.ac/problems/16866) | | **B** | Difference | `ecna/2018/difference` | `ecna/2018/ecna2018.pdf` | - | [16867](https://solved.ac/problems/16867) | | **C** | Pear-wise Voting | `ecna/2018/pearwise` | `ecna/2018/ecna2018.pdf` | - | [16868](https://solved.ac/problems/16868) | | **D** | Pizza Cutting | `ecna/2018/pizzacutting` | `ecna/2018/ecna2018.pdf` | - | [16869](https://solved.ac/problems/16869) | | **E** | The Punctilious Cruciverbalist | `ecna/2018/punctiliouscruciverbalist` | `ecna/2018/ecna2018.pdf` | - | [16870](https://solved.ac/problems/16870) | | **F** | A Random Problem | `ecna/2018/randomproblem` | `ecna/2018/ecna2018.pdf` | - | [16871](https://solved.ac/problems/16871) | | **G** | Roman Holidays | `ecna/2018/romanholidays` | `ecna/2018/ecna2018.pdf` | - | [16872](https://solved.ac/problems/16872) | | **H** | Sequential Yahtzee | `ecna/2018/sequentialyahtzee` | `ecna/2018/ecna2018.pdf` | - | [16873](https://solved.ac/problems/16873) | | **I** | Tours de Sales Force | `ecna/2018/toursdesalesforce` | `ecna/2018/ecna2018.pdf` | - | [16874](https://solved.ac/problems/16874) | | **J** | Watch Where You Step | `ecna/2018/watchyourstep` | `ecna/2018/ecna2018.pdf` | - | [16875](https://solved.ac/problems/16875) | --- ## East Central North America Regional Contest (2019) - **Contest Slug:** `ecna` - **Year:** 2019 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2019%20ICPC%20East-Central%20NA%20Regional%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2098) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------- | :-------------------------------- | :----------------------- | :-----------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Retribution! | `ecna/2019/retribution` | `ecna/2019/ecna2019.pdf` | [retribution](https://open.kattis.com/problems/retribution) | [17852](https://solved.ac/problems/17852) | | **B** | Bio Trip | `ecna/2019/biotrip` | `ecna/2019/ecna2019.pdf` | [biotrip](https://open.kattis.com/problems/biotrip) | [17853](https://solved.ac/problems/17853) | | **C** | Cheese, If You Please | `ecna/2019/cheeseifyouplease` | `ecna/2019/ecna2019.pdf` | [cheeseifyouplease](https://open.kattis.com/problems/cheeseifyouplease) | [17854](https://solved.ac/problems/17854) | | **D** | Follow the Bouncing Ball | `ecna/2019/followthebouncingball` | `ecna/2019/ecna2019.pdf` | [followthebouncingball](https://open.kattis.com/problems/followthebouncingball) | [17855](https://solved.ac/problems/17855) | | **E** | Just Passing Through | `ecna/2019/justpassingthrough` | `ecna/2019/ecna2019.pdf` | [justpassingthrough](https://open.kattis.com/problems/justpassingthrough) | [17856](https://solved.ac/problems/17856) | | **F** | Musical Chairs | `ecna/2019/musicalchairs` | `ecna/2019/ecna2019.pdf` | [musicalchairs](https://open.kattis.com/problems/musicalchairs) | [17857](https://solved.ac/problems/17857) | | **G** | Out of Sorts | `ecna/2019/outofsorts` | `ecna/2019/ecna2019.pdf` | [outofsorts](https://open.kattis.com/problems/outofsorts) | [17858](https://solved.ac/problems/17858) | | **H** | Remainder Reminder | `ecna/2019/remainderreminder` | `ecna/2019/ecna2019.pdf` | [remainderreminder](https://open.kattis.com/problems/remainderreminder) | [17859](https://solved.ac/problems/17859) | | **I** | Square Rooms | `ecna/2019/squarerooms` | `ecna/2019/ecna2019.pdf` | [squarerooms](https://open.kattis.com/problems/squarerooms) | [17860](https://solved.ac/problems/17860) | | **J** | Taxed Editor | `ecna/2019/taxededitor` | `ecna/2019/ecna2019.pdf` | [taxededitor](https://open.kattis.com/problems/taxededitor) | [17861](https://solved.ac/problems/17861) | | **K** | Where Have You Bin? | `ecna/2019/wherehaveyoubin` | `ecna/2019/ecna2019.pdf` | [wherehaveyoubin](https://open.kattis.com/problems/wherehaveyoubin) | [17862](https://solved.ac/problems/17862) | --- ## East Central North America Regional Contest (2020) - **Contest Slug:** `ecna` - **Year:** 2020 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2020%20ICPC%20East-Central%20NA%20Regional%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2456) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------------------------------- | :------------------------------- | :----------------------- | :---------------------------------------------------------------------------: | :---------------------------------------: | | **A** | All in the Family | `ecna/2020/allinthefamily` | `ecna/2020/ecna2020.pdf` | [allinthefamily](https://open.kattis.com/problems/allinthefamily) | [21150](https://solved.ac/problems/21150) | | **B** | Kinky Word Searches | `ecna/2020/kinkywordsearch` | `ecna/2020/ecna2020.pdf` | [kinkywordsearch](https://open.kattis.com/problems/kinkywordsearch) | [21151](https://solved.ac/problems/21151) | | **C** | Math Trade | `ecna/2020/mathtrade` | `ecna/2020/ecna2020.pdf` | [mathtrade](https://open.kattis.com/problems/mathtrade) | [21152](https://solved.ac/problems/21152) | | **D** | Oreperations Research | `ecna/2020/oreperationsresearch` | `ecna/2020/ecna2020.pdf` | [oreperationsresearch](https://open.kattis.com/problems/oreperationsresearch) | [21153](https://solved.ac/problems/21153) | | **E** | Over the Hill, Part 1 | `ecna/2020/overthehill1` | `ecna/2020/ecna2020.pdf` | [overthehill1](https://open.kattis.com/problems/overthehill1) | [21154](https://solved.ac/problems/21154) | | **F** | Over the Hill, Part 2 | `ecna/2020/overthehill2` | `ecna/2020/ecna2020.pdf` | [overthehill2](https://open.kattis.com/problems/overthehill2) | [21155](https://solved.ac/problems/21155) | | **G** | A Rank Problem | `ecna/2020/rankproblem` | `ecna/2020/ecna2020.pdf` | [rankproblem](https://open.kattis.com/problems/rankproblem) | [21156](https://solved.ac/problems/21156) | | **H** | Restroom Monitor | `ecna/2020/restroommonitor` | `ecna/2020/ecna2020.pdf` | [restroommonitor](https://open.kattis.com/problems/restroommonitor) | [21157](https://solved.ac/problems/21157) | | **I** | Scholar's Lawn | `ecna/2020/scholarslawn` | `ecna/2020/ecna2020.pdf` | [scholarslawn](https://open.kattis.com/problems/scholarslawn) | [21158](https://solved.ac/problems/21158) | | **J** | Simply Sudoku | `ecna/2020/simplysudoku` | `ecna/2020/ecna2020.pdf` | [simplysudoku](https://open.kattis.com/problems/simplysudoku) | [21159](https://solved.ac/problems/21159) | | **K** | Weighty Tomes | `ecna/2020/weightytomes` | `ecna/2020/ecna2020.pdf` | [weightytomes](https://open.kattis.com/problems/weightytomes) | [21160](https://solved.ac/problems/21160) | | **L** | Workers of the World Unite! Just Not Too Close. | `ecna/2020/workers` | `ecna/2020/ecna2020.pdf` | [workers](https://open.kattis.com/problems/workers) | [21161](https://solved.ac/problems/21161) | --- ## East Central North America Regional Contest (2021) - **Contest Slug:** `ecna` - **Year:** 2021 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2021%20ICPC%20East-Central%20NA%20Regional%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/3033) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------- | :----------------------------- | :----------------------- | :-----------------------------------------------------------------------: | :---------------------------------------: | | **A** | 1's For All | `ecna/2021/1sforall` | `ecna/2021/ecna2021.pdf` | [1sforall](https://open.kattis.com/problems/1sforall) | [24555](https://solved.ac/problems/24555) | | **B** | Abridged Reading | `ecna/2021/abridgedreading` | `ecna/2021/ecna2021.pdf` | [abridgedreading](https://open.kattis.com/problems/abridgedreading) | [24556](https://solved.ac/problems/24556) | | **C** | Ball of Whacks | `ecna/2021/ballofwhacks` | `ecna/2021/ecna2021.pdf` | [ballofwhacks](https://open.kattis.com/problems/ballofwhacks) | [24557](https://solved.ac/problems/24557) | | **D** | Downsizing | `ecna/2021/downsizing` | `ecna/2021/ecna2021.pdf` | [downsizing](https://open.kattis.com/problems/downsizing) | [24558](https://solved.ac/problems/24558) | | **E** | Gambling Game | `ecna/2021/gamblinggame` | `ecna/2021/ecna2021.pdf` | [gamblinggame](https://open.kattis.com/problems/gamblinggame) | [24559](https://solved.ac/problems/24559) | | **F** | Growing Some Oobleck | `ecna/2021/growingsomeoobleck` | `ecna/2021/ecna2021.pdf` | [growingsomeoobleck](https://open.kattis.com/problems/growingsomeoobleck) | [24560](https://solved.ac/problems/24560) | | **G** | Noonerized Spumbers | `ecna/2021/noonerizedspumbers` | `ecna/2021/ecna2021.pdf` | [noonerizedspumbers](https://open.kattis.com/problems/noonerizedspumbers) | [24561](https://solved.ac/problems/24561) | | **H** | Numble | `ecna/2021/numble` | `ecna/2021/ecna2021.pdf` | [numble](https://open.kattis.com/problems/numble) | [24562](https://solved.ac/problems/24562) | | **I** | Pinned Files | `ecna/2021/pinnedfiles` | `ecna/2021/ecna2021.pdf` | [pinnedfiles](https://open.kattis.com/problems/pinnedfiles) | [24563](https://solved.ac/problems/24563) | | **J** | Recycling | `ecna/2021/recycling` | `ecna/2021/ecna2021.pdf` | [recycling](https://open.kattis.com/problems/recycling) | [24564](https://solved.ac/problems/24564) | | **K** | Stable Table | `ecna/2021/stabletable` | `ecna/2021/ecna2021.pdf` | [stabletable](https://open.kattis.com/problems/stabletable) | [24565](https://solved.ac/problems/24565) | | **L** | Statues | `ecna/2021/statues` | `ecna/2021/ecna2021.pdf` | [statues](https://open.kattis.com/problems/statues) | [24566](https://solved.ac/problems/24566) | | **M** | Tomb Hater | `ecna/2021/tombhater` | `ecna/2021/ecna2021.pdf` | [tombhater](https://open.kattis.com/problems/tombhater) | [24567](https://solved.ac/problems/24567) | --- ## East Central North America Regional Contest (2022) - **Contest Slug:** `ecna` - **Year:** 2022 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2022%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2025%2C%202023%29) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/3521) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------------------- | :----------------------------- | :-------------------------- | :-----------------------------------------------------------------------: | :---------------------------------------: | | **A** | Mazing Puzzle | `ecna/2022/amazingpuzzle` | `ecna/2022/ecna2022-23.pdf` | [amazingpuzzle](https://open.kattis.com/problems/amazingpuzzle) | [27609](https://solved.ac/problems/27609) | | **B** | A Musical Question | `ecna/2022/amusicalquestion` | `ecna/2022/ecna2022-23.pdf` | [amusicalquestion](https://open.kattis.com/problems/amusicalquestion) | [27610](https://solved.ac/problems/27610) | | **C** | Cribbage On Steroids | `ecna/2022/cribbageonsteroids` | `ecna/2022/ecna2022-23.pdf` | [cribbageonsteroids](https://open.kattis.com/problems/cribbageonsteroids) | [27611](https://solved.ac/problems/27611) | | **D** | Determining Nucleotide Assortments | `ecna/2022/nucleotides` | `ecna/2022/ecna2022-23.pdf` | [nucleotides](https://open.kattis.com/problems/nucleotides) | [27612](https://solved.ac/problems/27612) | | **E** | Hilbert's Hedge Maze | `ecna/2022/hilbertshedgemaze` | `ecna/2022/ecna2022-23.pdf` | [hilbertshedgemaze](https://open.kattis.com/problems/hilbertshedgemaze) | [27613](https://solved.ac/problems/27613) | | **F** | It's About Time | `ecna/2022/itsabouttime` | `ecna/2022/ecna2022-23.pdf` | [itsabouttime](https://open.kattis.com/problems/itsabouttime) | [27614](https://solved.ac/problems/27614) | | **G** | Pea Pattern | `ecna/2022/peapattern` | `ecna/2022/ecna2022-23.pdf` | [peapattern](https://open.kattis.com/problems/peapattern) | [27615](https://solved.ac/problems/27615) | | **H** | Picking Up Steam | `ecna/2022/pickingupsteam` | `ecna/2022/ecna2022-23.pdf` | [pickingupsteam](https://open.kattis.com/problems/pickingupsteam) | [27616](https://solved.ac/problems/27616) | | **I** | Road To Savings | `ecna/2022/roadtosavings` | `ecna/2022/ecna2022-23.pdf` | [roadtosavings](https://open.kattis.com/problems/roadtosavings) | [27617](https://solved.ac/problems/27617) | | **J** | Simple Solitaire | `ecna/2022/simplesolitaire` | `ecna/2022/ecna2022-23.pdf` | [simplesolitaire](https://open.kattis.com/problems/simplesolitaire) | [27618](https://solved.ac/problems/27618) | | **K** | Two Charts Become One | `ecna/2022/twochartsbecomeone` | `ecna/2022/ecna2022-23.pdf` | [twochartsbecomeone](https://open.kattis.com/problems/twochartsbecomeone) | [27619](https://solved.ac/problems/27619) | | **L** | Which Warehouse? | `ecna/2022/whichwarehouse` | `ecna/2022/ecna2022-23.pdf` | [whichwarehouse](https://open.kattis.com/problems/whichwarehouse) | [27620](https://solved.ac/problems/27620) | --- ## East Central North America Regional Contest (2023) - **Contest Slug:** `ecna` - **Year:** 2023 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2023%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2024%2C%202024%29) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4011) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------------------ | :------------------------------ | :-------------------------- | :-------------------------------------------------------------------------: | :---------------------------------------: | | **A** | A Pivotal Question | `ecna/2023/apivotalquestion` | `ecna/2023/ecna2023-24.pdf` | [apivotalquestion](https://open.kattis.com/problems/apivotalquestion) | [30524](https://solved.ac/problems/30524) | | **B** | B Road Band | `ecna/2023/broadband` | `ecna/2023/ecna2023-24.pdf` | [broadband](https://open.kattis.com/problems/broadband) | [30525](https://solved.ac/problems/30525) | | **C** | Convex Hull Extension | `ecna/2023/convexhullextension` | `ecna/2023/ecna2023-24.pdf` | [convexhullextension](https://open.kattis.com/problems/convexhullextension) | [30526](https://solved.ac/problems/30526) | | **D** | Cornhusker | `ecna/2023/cornhusker` | `ecna/2023/ecna2023-24.pdf` | [cornhusker](https://open.kattis.com/problems/cornhusker) | [30527](https://solved.ac/problems/30527) | | **E** | Prof. Fumblemore and the Collatz Conjecture | `ecna/2023/coltype` | `ecna/2023/ecna2023-24.pdf` | [coltype](https://open.kattis.com/problems/coltype) | [30528](https://solved.ac/problems/30528) | | **F** | Double Up | `ecna/2023/doubleup` | `ecna/2023/ecna2023-24.pdf` | [doubleup](https://open.kattis.com/problems/doubleup) | [30529](https://solved.ac/problems/30529) | | **G** | Forest for the Trees | `ecna/2023/forestforthetrees` | `ecna/2023/ecna2023-24.pdf` | [forestforthetrees2](https://open.kattis.com/problems/forestforthetrees2) | [30530](https://solved.ac/problems/30530) | | **H** | Impartial Strings | `ecna/2023/impartialstrings` | `ecna/2023/ecna2023-24.pdf` | [impartialstrings](https://open.kattis.com/problems/impartialstrings) | [30531](https://solved.ac/problems/30531) | | **I** | ISBN Conversion | `ecna/2023/isbnconversion` | `ecna/2023/ecna2023-24.pdf` | [isbnconversion](https://open.kattis.com/problems/isbnconversion) | [30532](https://solved.ac/problems/30532) | | **J** | Pearls | `ecna/2023/pearls` | `ecna/2023/ecna2023-24.pdf` | [pearls](https://open.kattis.com/problems/pearls) | [30533](https://solved.ac/problems/30533) | | **K** | Split Decisions | `ecna/2023/splitdecisions` | `ecna/2023/ecna2023-24.pdf` | [splitdecisions](https://open.kattis.com/problems/splitdecisions) | [30534](https://solved.ac/problems/30534) | | **L** | A (Fast) Walk in the Woods | `ecna/2023/walkinthewoods` | `ecna/2023/ecna2023-24.pdf` | [walkinthewoods](https://open.kattis.com/problems/walkinthewoods) | [30535](https://solved.ac/problems/30535) | --- ## East Central North America Regional Contest (2024) - **Contest Slug:** `ecna` - **Year:** 2024 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2024%20North%20America%20East%20Division%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4341) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :---------------------------------- | :------------------------------ | :---------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | A Stack of Gold | `ecna/2024/astackofgold` | `ecna/2024/problemset24_25.pdf` | [astackofgold](https://open.kattis.com/problems/astackofgold) | [32805](https://solved.ac/problems/32805) | | **B** | Average Substring Value | `ecna/2024/averagesubstringvalue` | `ecna/2024/problemset24_25.pdf` | [averagesubstringvalue](https://open.kattis.com/problems/averagesubstringvalue) | [32806](https://solved.ac/problems/32806) | | **C** | Balancing Art | `ecna/2024/balancingart` | `ecna/2024/problemset24_25.pdf` | [balancingart](https://open.kattis.com/problems/balancingart) | [32807](https://solved.ac/problems/32807) | | **D** | Brownian Bears | `ecna/2024/brownianbears` | `ecna/2024/problemset24_25.pdf` | [brownianbears](https://open.kattis.com/problems/brownianbears) | [32808](https://solved.ac/problems/32808) | | **E** | Fences Make Good Neighbors | `ecna/2024/fencesmakegoodneighbors` | `ecna/2024/problemset24_25.pdf` | [fencesmakegoodneighbors](https://open.kattis.com/problems/fencesmakegoodneighbors) | [32809](https://solved.ac/problems/32809) | | **F** | Leapfrog Encryption | `ecna/2024/leapfrogencryption` | `ecna/2024/problemset24_25.pdf` | [leapfrogencryption](https://open.kattis.com/problems/leapfrogencryption) | [32810](https://solved.ac/problems/32810) | | **G** | Letter Balloons | `ecna/2024/letterballoons` | `ecna/2024/problemset24_25.pdf` | [letterballoons](https://open.kattis.com/contests/epgg92/problems/letterballoons) | [32811](https://solved.ac/problems/32811) | | **H** | Marching Orders | `ecna/2024/marchingorders` | `ecna/2024/problemset24_25.pdf` | [marchingorders](https://open.kattis.com/problems/marchingorders) | [32812](https://solved.ac/problems/32812) | | **I** | Oooh I See | `ecna/2024/ooohisee` | `ecna/2024/problemset24_25.pdf` | [ooohisee](https://open.kattis.com/problems/ooohisee) | [32813](https://solved.ac/problems/32813) | | **J** | Pascal Meets Boole | `ecna/2024/pascalmeetsboole` | `ecna/2024/problemset24_25.pdf` | [pascalmeetsboole](https://open.kattis.com/problems/pascalmeetsboole) | [32814](https://solved.ac/problems/32814) | | **K** | Pony-less Express | `ecna/2024/ponylessexpress` | `ecna/2024/problemset24_25.pdf` | [ponylessexpress](https://open.kattis.com/problems/ponylessexpress) | [32815](https://solved.ac/problems/32815) | | **L** | Repetitive Routes | `ecna/2024/repetitiveroutes` | `ecna/2024/problemset24_25.pdf` | [repetitiveroutes](https://open.kattis.com/problems/repetitiveroutes) | [32816](https://solved.ac/problems/32816) | | **M** | Smart Password Validation | `ecna/2024/smartpasswordvalidation` | `ecna/2024/problemset24_25.pdf` | [smartpasswordvalidation](https://open.kattis.com/problems/smartpasswordvalidation) | [32817](https://solved.ac/problems/32817) | --- ## East Central North America Regional Contest (2025) - **Contest Slug:** `ecna` - **Year:** 2025 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2025%20North%20America%20East%20Division%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4685) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------- | :--------------------------------- | :------------------------------------------------------------ | :---------------------------------------------------------------------------: | :---------------------------------------: | | **A** | A Little Leftover Pizza | `ecna/2025/A-Alittleleftoverpizza` | `ecna/2025/A-Alittleleftoverpizza/A-Alittleleftoverpizza.pdf` | [alittleleftoverpizza](https://open.kattis.com/problems/alittleleftoverpizza) | [35373](https://solved.ac/problems/35373) | | **B** | Andor Strikes Again | `ecna/2025/B-Andor` | `ecna/2025/B-Andor/B-Andor.pdf` | [andor](https://open.kattis.com/problems/andor) | [35374](https://solved.ac/problems/35374) | | **C** | AROD | `ecna/2025/C-Arod` | `ecna/2025/C-Arod/C-Arod.pdf` | [arod](https://open.kattis.com/problems/arod) | [35375](https://solved.ac/problems/35375) | | **D** | But I Want to Win | `ecna/2025/D-Butiwanttowin` | `ecna/2025/D-Butiwanttowin/D-Butiwanttowin.pdf` | [butiwanttowin](https://open.kattis.com/problems/butiwanttowin) | [35376](https://solved.ac/problems/35376) | | **E** | Chess Solitaire | `ecna/2025/E-Chesssolitaire` | `ecna/2025/E-Chesssolitaire/E-Chesssolitaire.pdf` | [chesssolitaire](https://open.kattis.com/problems/chesssolitaire) | [35377](https://solved.ac/problems/35377) | | **F** | Fractional Sequence | `ecna/2025/F-Fractionalsequence` | `ecna/2025/F-Fractionalsequence/F-Fractionalsequence.pdf` | [fractionalsequence](https://open.kattis.com/problems/fractionalsequence) | [35378](https://solved.ac/problems/35378) | | **G** | How Many Balls? | `ecna/2025/G-Howmanyballs` | `ecna/2025/G-Howmanyballs/G-Howmanyballs.pdf` | [howmanyballs](https://open.kattis.com/problems/howmanyballs) | [35379](https://solved.ac/problems/35379) | | **H** | Move It, Slowpoke! | `ecna/2025/H-Moveitslowpoke` | `ecna/2025/H-Moveitslowpoke/H-Moveitslowpoke.pdf` | [moveitslowpoke](https://open.kattis.com/problems/moveitslowpoke) | [35380](https://solved.ac/problems/35380) | | **I** | Number Pyramid | `ecna/2025/I-Numberpyramid` | `ecna/2025/I-Numberpyramid/I-Numberpyramid.pdf` | [numberpyramid](https://open.kattis.com/problems/numberpyramid) | [35381](https://solved.ac/problems/35381) | | **J** | Polyomino Tiling | `ecna/2025/J-Polyominotiling` | `ecna/2025/J-Polyominotiling/J-Polyominotiling.pdf` | [polyominotiling](https://open.kattis.com/problems/polyominotiling) | [35382](https://solved.ac/problems/35382) | | **K** | Triptych | `ecna/2025/K-Triptych` | `ecna/2025/K-Triptych/K-Triptych.pdf` | [triptych](https://open.kattis.com/problems/triptych) | [35383](https://solved.ac/problems/35383) | | **L** | Valley Gulls | `ecna/2025/L-Valleygulls` | `ecna/2025/L-Valleygulls/L-Valleygulls.pdf` | [valleygulls](https://open.kattis.com/problems/valleygulls) | [35384](https://solved.ac/problems/35384) | --- ## ICPC World Finals (2011) - **Contest Slug:** `finals` - **Year:** 2011 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------- | :------------------------ | :----------------------------------------- | :----: | :-------------------------------------: | | **A** | To Add or to Multiply | `finals/2011/addmul` | `finals/2011/2011WorldFinalProblemSet.pdf` | - | [4215](https://solved.ac/problems/4215) | | **B** | Affine Mess | `finals/2011/affine` | `finals/2011/2011WorldFinalProblemSet.pdf` | - | [4216](https://solved.ac/problems/4216) | | **C** | Ancient Messages | `finals/2011/ancient` | `finals/2011/2011WorldFinalProblemSet.pdf` | - | [4217](https://solved.ac/problems/4217) | | **D** | Chips Challenge | `finals/2011/chips` | `finals/2011/2011WorldFinalProblemSet.pdf` | - | [4218](https://solved.ac/problems/4218) | | **E** | Coffee Central | `finals/2011/coffee` | `finals/2011/2011WorldFinalProblemSet.pdf` | - | [4219](https://solved.ac/problems/4219) | | **F** | Machine Works | `finals/2011/works` | `finals/2011/2011WorldFinalProblemSet.pdf` | - | [4220](https://solved.ac/problems/4220) | | **G** | Magic Sticks | `finals/2011/magicsticks` | `finals/2011/2011WorldFinalProblemSet.pdf` | - | [4221](https://solved.ac/problems/4221) | | **H** | Mining Your Own Business | `finals/2011/mining` | `finals/2011/2011WorldFinalProblemSet.pdf` | - | [4222](https://solved.ac/problems/4222) | | **I** | Mummy Madness | `finals/2011/mummy` | `finals/2011/2011WorldFinalProblemSet.pdf` | - | [4223](https://solved.ac/problems/4223) | | **J** | Pyramids | `finals/2011/pyramids` | `finals/2011/2011WorldFinalProblemSet.pdf` | - | [4224](https://solved.ac/problems/4224) | | **K** | Trash Removal | `finals/2011/trash` | `finals/2011/2011WorldFinalProblemSet.pdf` | - | [4225](https://solved.ac/problems/4225) | --- ## ICPC World Finals (2012) - **Contest Slug:** `finals` - **Year:** 2012 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/International%20Collegiate%20Programming%20Contest%20%28ACM-ICPC%29%20World%20Finals%202012) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2806) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------- | :------------------------- | :------------------------- | :-------------------------------------------------------------: | :---------------------------------------: | | **A** | Asteroid Rangers | `finals/2012/asteroids` | `finals/2012/icpc2012.pdf` | [rangers](https://open.kattis.com/problems/rangers) | [23207](https://solved.ac/problems/23207) | | **B** | Curvy Little Bottles | `finals/2012/bottle` | `finals/2012/icpc2012.pdf` | [bottles](https://open.kattis.com/problems/bottles) | [23208](https://solved.ac/problems/23208) | | **C** | Bus Tour | `finals/2012/bustour` | `finals/2012/icpc2012.pdf` | [bustour](https://open.kattis.com/problems/bustour) | [23209](https://solved.ac/problems/23209) | | **D** | Fibonacci Words | `finals/2012/fibonacci` | `finals/2012/icpc2012.pdf` | [fibonacci](https://open.kattis.com/problems/fibonacci) | [23210](https://solved.ac/problems/23210) | | **E** | Infiltration | `finals/2012/infiltration` | `finals/2012/icpc2012.pdf` | [infiltration2](https://open.kattis.com/problems/infiltration2) | [23211](https://solved.ac/problems/23211) | | **F** | Keys | `finals/2012/keys` | `finals/2012/icpc2012.pdf` | [keys](https://open.kattis.com/problems/keys) | [23212](https://solved.ac/problems/23212) | | **G** | Minimum Cost Flow | `finals/2012/minflow` | `finals/2012/icpc2012.pdf` | [minflow](https://open.kattis.com/problems/minflow) | [23213](https://solved.ac/problems/23213) | | **H** | Room Service | `finals/2012/room` | `finals/2012/icpc2012.pdf` | [roomservice](https://open.kattis.com/problems/roomservice) | [23214](https://solved.ac/problems/23214) | | **I** | A Safe Bet | `finals/2012/safe` | `finals/2012/icpc2012.pdf` | [safebet](https://open.kattis.com/problems/safebet) | [23215](https://solved.ac/problems/23215) | | **J** | Shortest Flight Path | `finals/2012/shortest` | `finals/2012/icpc2012.pdf` | [flightpath](https://open.kattis.com/problems/flightpath) | [23216](https://solved.ac/problems/23216) | | **K** | Stacking Plates | `finals/2012/stacking` | `finals/2012/icpc2012.pdf` | [stacking](https://open.kattis.com/problems/stacking) | [23217](https://solved.ac/problems/23217) | | **L** | Takeover Wars | `finals/2012/takeover` | `finals/2012/icpc2012.pdf` | [takeover](https://open.kattis.com/problems/takeover) | [23218](https://solved.ac/problems/23218) | --- ## ICPC World Finals (2013) - **Contest Slug:** `finals` - **Year:** 2013 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/International%20Collegiate%20Programming%20Contest%20%28ACM-ICPC%29%20World%20Finals%202013) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1059) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------- | :----------------------- | :------------------------- | :-------------------------------------------------------: | :-------------------------------------: | | **A** | Self-Assembly | `finals/2013/assembly` | `finals/2013/icpc2013.pdf` | [assembly](https://open.kattis.com/problems/assembly) | [8877](https://solved.ac/problems/8877) | | **B** | Hey, Better Bettor | `finals/2013/bettor` | `finals/2013/icpc2013.pdf` | [bettor](https://open.kattis.com/problems/bettor) | [8878](https://solved.ac/problems/8878) | | **C** | Surely You Congest | `finals/2013/congest` | `finals/2013/icpc2013.pdf` | [congest](https://open.kattis.com/problems/congest) | [8879](https://solved.ac/problems/8879) | | **D** | Factors | `finals/2013/factors` | `finals/2013/icpc2013.pdf` | [factors](https://open.kattis.com/problems/factors) | [8880](https://solved.ac/problems/8880) | | **E** | Harvard | `finals/2013/harvard` | `finals/2013/icpc2013.pdf` | [harvard](https://open.kattis.com/problems/harvard) | [8881](https://solved.ac/problems/8881) | | **F** | Low Power | `finals/2013/low` | `finals/2013/icpc2013.pdf` | [low](https://open.kattis.com/problems/low) | [8882](https://solved.ac/problems/8882) | | **G** | Map Tiles | `finals/2013/maptiles` | `finals/2013/icpc2013.pdf` | [maptiles](https://open.kattis.com/problems/maptiles) | [8883](https://solved.ac/problems/8883) | | **H** | Matryoshka | `finals/2013/matryoshka` | `finals/2013/icpc2013.pdf` | [matryoshka](https://open.kattis.com/problems/matryoshka) | [8884](https://solved.ac/problems/8884) | | **I** | Pirate Chest | `finals/2013/pirate` | `finals/2013/icpc2013.pdf` | [pirate](https://open.kattis.com/problems/pirate) | [8885](https://solved.ac/problems/8885) | | **J** | Pollution Solution | `finals/2013/pollution` | `finals/2013/icpc2013.pdf` | [pollution](https://open.kattis.com/problems/pollution) | [8886](https://solved.ac/problems/8886) | | **K** | Up a Tree | `finals/2013/tree` | `finals/2013/icpc2013.pdf` | [tree](https://open.kattis.com/problems/tree) | [8887](https://solved.ac/problems/8887) | --- ## ICPC World Finals (2014) - **Contest Slug:** `finals` - **Year:** 2014 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/International%20Collegiate%20Programming%20Contest%20%28ACM-ICPC%29%20World%20Finals%202014) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1250) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------- | :------------------------- | :------------------------- | :-----------------------------------------------------------: | :---------------------------------------: | | **A** | Baggage | `finals/2014/baggage` | `finals/2014/icpc2014.pdf` | [baggage](https://open.kattis.com/problems/baggage) | [10050](https://solved.ac/problems/10050) | | **B** | Buffed Buffet | `finals/2014/buffet` | `finals/2014/icpc2014.pdf` | [buffet](https://open.kattis.com/problems/buffet) | [10051](https://solved.ac/problems/10051) | | **C** | Crane Balancing | `finals/2014/crane` | `finals/2014/icpc2014.pdf` | [crane](https://open.kattis.com/problems/crane) | [10052](https://solved.ac/problems/10052) | | **D** | Game Strategy | `finals/2014/game` | `finals/2014/icpc2014.pdf` | [game](https://open.kattis.com/problems/game) | [10053](https://solved.ac/problems/10053) | | **E** | Maze Reduction | `finals/2014/maze` | `finals/2014/icpc2014.pdf` | [maze](https://open.kattis.com/problems/maze) | [10054](https://solved.ac/problems/10054) | | **F** | Messenger | `finals/2014/messenger` | `finals/2014/icpc2014.pdf` | [messenger](https://open.kattis.com/problems/messenger) | [10055](https://solved.ac/problems/10055) | | **G** | Metal Processing Plant | `finals/2014/metal` | `finals/2014/icpc2014.pdf` | [metal](https://open.kattis.com/problems/metal) | [10056](https://solved.ac/problems/10056) | | **H** | Pachinko | `finals/2014/pachinko` | `finals/2014/icpc2014.pdf` | [pachinko](https://open.kattis.com/problems/pachinko) | [10057](https://solved.ac/problems/10057) | | **I** | Sensor Network | `finals/2014/sensor` | `finals/2014/icpc2014.pdf` | [sensor](https://open.kattis.com/problems/sensor) | [10058](https://solved.ac/problems/10058) | | **J** | Skiing | `finals/2014/skiing` | `finals/2014/icpc2014.pdf` | [skiing](https://open.kattis.com/problems/skiing) | [10059](https://solved.ac/problems/10059) | | **K** | Surveillance | `finals/2014/surveillance` | `finals/2014/icpc2014.pdf` | [surveillance](https://open.kattis.com/problems/surveillance) | [10060](https://solved.ac/problems/10060) | | **L** | Wire Crossing | `finals/2014/wires` | `finals/2014/icpc2014.pdf` | [wire](https://open.kattis.com/problems/wire) | [10061](https://solved.ac/problems/10061) | --- ## ICPC World Finals (2015) - **Contest Slug:** `finals` - **Year:** 2015 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/International%20Collegiate%20Programming%20Contest%20%28ACM-ICPC%29%20World%20Finals%202015) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1347) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------- | :---------------------- | :------------------------- | :-----------------------------------------------------: | :---------------------------------------: | | **A** | Amalgamated Artichokes | `finals/2015/artichoke` | `finals/2015/icpc2015.pdf` | [artichoke](https://open.kattis.com/problems/artichoke) | [10784](https://solved.ac/problems/10784) | | **B** | Asteroids | `finals/2015/asteroids` | `finals/2015/icpc2015.pdf` | [asteroids](https://open.kattis.com/problems/asteroids) | [10785](https://solved.ac/problems/10785) | | **C** | Catering | `finals/2015/catering` | `finals/2015/icpc2015.pdf` | [catering](https://open.kattis.com/problems/catering) | [10786](https://solved.ac/problems/10786) | | **D** | Cutting Cheese | `finals/2015/cheese` | `finals/2015/icpc2015.pdf` | [cheese](https://open.kattis.com/problems/cheese) | [10787](https://solved.ac/problems/10787) | | **E** | Evolution in Parallel | `finals/2015/evolution` | `finals/2015/icpc2015.pdf` | [evolution](https://open.kattis.com/problems/evolution) | [10788](https://solved.ac/problems/10788) | | **F** | Keyboarding | `finals/2015/keyboard` | `finals/2015/icpc2015.pdf` | [keyboard](https://open.kattis.com/problems/keyboard) | [10789](https://solved.ac/problems/10789) | | **G** | Pipe Stream | `finals/2015/pipe` | `finals/2015/icpc2015.pdf` | [pipe](https://open.kattis.com/problems/pipe) | [10790](https://solved.ac/problems/10790) | | **H** | Qanat | `finals/2015/qanat` | `finals/2015/icpc2015.pdf` | [qanat](https://open.kattis.com/problems/qanat) | [10791](https://solved.ac/problems/10791) | | **I** | Ship Traffic | `finals/2015/ship` | `finals/2015/icpc2015.pdf` | [ship](https://open.kattis.com/problems/ship) | [10792](https://solved.ac/problems/10792) | | **J** | Tile Cutting | `finals/2015/tiles` | `finals/2015/icpc2015.pdf` | [tiles](https://open.kattis.com/problems/tiles) | [10793](https://solved.ac/problems/10793) | | **K** | Tours | `finals/2015/tours` | `finals/2015/icpc2015.pdf` | [tours](https://open.kattis.com/problems/tours) | [10794](https://solved.ac/problems/10794) | | **L** | Weather Report | `finals/2015/weather` | `finals/2015/icpc2015.pdf` | [weather](https://open.kattis.com/problems/weather) | [10983](https://solved.ac/problems/10983) | | **M** | Window Manager | `finals/2015/windows` | `finals/2015/icpc2015.pdf` | [windows](https://open.kattis.com/problems/windows) | [10796](https://solved.ac/problems/10796) | --- ## ICPC World Finals (2016) - **Contest Slug:** `finals` - **Year:** 2016 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/International%20Collegiate%20Programming%20Contest%20%28ACM-ICPC%29%20World%20Finals%202016) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1490) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------------- | :------------------------- | :------------------------- | :-------------------------------------------------------------: | :---------------------------------------: | | **A** | Balanced Diet | `finals/2016/balanceddiet` | `finals/2016/icpc2016.pdf` | [balanceddiet2](https://open.kattis.com/problems/balanceddiet2) | [12765](https://solved.ac/problems/12765) | | **B** | Branch Assignment | `finals/2016/branch` | `finals/2016/icpc2016.pdf` | [branch](https://open.kattis.com/problems/branch) | [12766](https://solved.ac/problems/12766) | | **C** | Ceiling Function | `finals/2016/ceiling` | `finals/2016/icpc2016.pdf` | [ceiling](https://open.kattis.com/problems/ceiling) | [12767](https://solved.ac/problems/12767) | | **D** | Clock Breaking | `finals/2016/clock` | `finals/2016/icpc2016.pdf` | [clock](https://open.kattis.com/problems/clock) | [12768](https://solved.ac/problems/12768) | | **E** | Forever Young | `finals/2016/foreveryoung` | `finals/2016/icpc2016.pdf` | [foreveryoung](https://open.kattis.com/problems/foreveryoung) | [12769](https://solved.ac/problems/12769) | | **F** | Longest Rivers | `finals/2016/rivers` | `finals/2016/icpc2016.pdf` | [rivers](https://open.kattis.com/problems/rivers) | [12770](https://solved.ac/problems/12770) | | **G** | Oil | `finals/2016/oil` | `finals/2016/icpc2016.pdf` | [oil2](https://open.kattis.com/problems/oil2) | [12771](https://solved.ac/problems/12771) | | **H** | Polygonal Puzzle | `finals/2016/puzzle` | `finals/2016/icpc2016.pdf` | [puzzle2](https://open.kattis.com/problems/puzzle2) | [12772](https://solved.ac/problems/12772) | | **I** | Road Times | `finals/2016/roadtimes` | `finals/2016/icpc2016.pdf` | [roadtimes](https://open.kattis.com/problems/roadtimes) | [12773](https://solved.ac/problems/12773) | | **J** | Spin Doctor | `finals/2016/spin` | `finals/2016/icpc2016.pdf` | [spin](https://open.kattis.com/problems/spin) | [12774](https://solved.ac/problems/12774) | | **K** | String Theory | `finals/2016/string` | `finals/2016/icpc2016.pdf` | [string](https://open.kattis.com/problems/string) | [12775](https://solved.ac/problems/12775) | | **L** | Swap Space | `finals/2016/swapspace` | `finals/2016/icpc2016.pdf` | [swapspace](https://open.kattis.com/problems/swapspace) | [12776](https://solved.ac/problems/12776) | | **M** | What Really Happened on Mars? | `finals/2016/mars` | `finals/2016/icpc2016.pdf` | [mars](https://open.kattis.com/problems/mars) | [12777](https://solved.ac/problems/12777) | --- ## ICPC World Finals (2017) - **Contest Slug:** `finals` - **Year:** 2017 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/International%20Collegiate%20Programming%20Contest%20%28ACM-ICPC%29%20World%20Finals%202017) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1747) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------- | :------------------------------ | :------------------------- | :-----------------------------------------------------------------: | :---------------------------------------: | | **A** | Airport Construction | `finals/2017/A-airport` | `finals/2017/icpc2017.pdf` | [airport](https://open.kattis.com/problems/airport) | [14633](https://solved.ac/problems/14633) | | **B** | Get a Clue! | `finals/2017/B-clue` | `finals/2017/icpc2017.pdf` | [clue](https://open.kattis.com/problems/clue) | [14634](https://solved.ac/problems/14634) | | **C** | Mission Improbable | `finals/2017/C-improbable` | `finals/2017/icpc2017.pdf` | [improbable](https://open.kattis.com/problems/improbable) | [14635](https://solved.ac/problems/14635) | | **D** | Money for Nothing | `finals/2017/D-money` | `finals/2017/icpc2017.pdf` | [money](https://open.kattis.com/problems/money) | [14636](https://solved.ac/problems/14636) | | **E** | Need for Speed | `finals/2017/E-speed` | `finals/2017/icpc2017.pdf` | [speed](https://open.kattis.com/problems/speed) | [14637](https://solved.ac/problems/14637) | | **F** | Posterize | `finals/2017/F-posterize` | `finals/2017/icpc2017.pdf` | [posterize](https://open.kattis.com/problems/posterize) | [14638](https://solved.ac/problems/14638) | | **G** | Replicate Replicate Rfplicbte | `finals/2017/G-replicate` | `finals/2017/icpc2017.pdf` | [replicate](https://open.kattis.com/problems/replicate) | [14639](https://solved.ac/problems/14639) | | **H** | Scenery | `finals/2017/H-scenery` | `finals/2017/icpc2017.pdf` | [scenery](https://open.kattis.com/problems/scenery) | [14640](https://solved.ac/problems/14640) | | **I** | Secret Chamber at Mount Rushmore | `finals/2017/I-secretchamber` | `finals/2017/icpc2017.pdf` | [secretchamber](https://open.kattis.com/problems/secretchamber) | [14641](https://solved.ac/problems/14641) | | **J** | Son of Pipe Stream | `finals/2017/J-sonofpipestream` | `finals/2017/icpc2017.pdf` | [sonofpipestream](https://open.kattis.com/problems/sonofpipestream) | [14642](https://solved.ac/problems/14642) | | **K** | Tarot Sham Boast | `finals/2017/K-tarotshamboast` | `finals/2017/icpc2017.pdf` | [tarotshamboast](https://open.kattis.com/problems/tarotshamboast) | [14643](https://solved.ac/problems/14643) | | **L** | Visual Python++ | `finals/2017/L-visual` | `finals/2017/icpc2017.pdf` | [visual](https://open.kattis.com/problems/visual) | [14644](https://solved.ac/problems/14644) | --- ## ICPC World Finals (2018) - **Contest Slug:** `finals` - **Year:** 2018 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/International%20Collegiate%20Programming%20Contest%20%28ACM-ICPC%29%20World%20Finals%202018) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1859) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------ | :------------------------------- | :------------------------- | :-------------------------------------------------------------------: | :---------------------------------------: | | **A** | Catch the Plane | `finals/2018/A-catch` | `finals/2018/icpc2018.pdf` | [catch](https://open.kattis.com/problems/catch) | [15689](https://solved.ac/problems/15689) | | **B** | Comma Sprinkler | `finals/2018/B-comma` | `finals/2018/icpc2018.pdf` | [comma](https://open.kattis.com/problems/comma) | [15690](https://solved.ac/problems/15690) | | **C** | Conquer The World | `finals/2018/C-conquertheworld` | `finals/2018/icpc2018.pdf` | [conquertheworld](https://open.kattis.com/problems/conquertheworld) | [15691](https://solved.ac/problems/15691) | | **D** | Gem Island | `finals/2018/D-gemisland` | `finals/2018/icpc2018.pdf` | [gemisland](https://open.kattis.com/problems/gemisland) | [15692](https://solved.ac/problems/15692) | | **E** | Getting a Jump on Crime | `finals/2018/E-gettingjump` | `finals/2018/icpc2018.pdf` | [gettingjump](https://open.kattis.com/problems/gettingjump) | [15693](https://solved.ac/problems/15693) | | **F** | Go with the Flow | `finals/2018/F-gowithflow` | `finals/2018/icpc2018.pdf` | [gowithflow](https://open.kattis.com/problems/gowithflow) | [15694](https://solved.ac/problems/15694) | | **G** | Panda Preserve | `finals/2018/G-pandapreserve` | `finals/2018/icpc2018.pdf` | [pandapreserve](https://open.kattis.com/problems/pandapreserve) | [15695](https://solved.ac/problems/15695) | | **H** | Single Cut of Failure | `finals/2018/H-single` | `finals/2018/icpc2018.pdf` | [single](https://open.kattis.com/problems/single) | [15696](https://solved.ac/problems/15696) | | **I** | Triangles | `finals/2018/I-triangles` | `finals/2018/icpc2018.pdf` | [triangles3](https://open.kattis.com/problems/triangles3) | [15697](https://solved.ac/problems/15697) | | **J** | Uncrossed Knight's Tour | `finals/2018/J-uncrossedknights` | `finals/2018/icpc2018.pdf` | [uncrossedknights](https://open.kattis.com/problems/uncrossedknights) | [15698](https://solved.ac/problems/15698) | | **K** | Wireless is the New Fiber | `finals/2018/K-newfiber` | `finals/2018/icpc2018.pdf` | [newfiber](https://open.kattis.com/problems/newfiber) | [15699](https://solved.ac/problems/15699) | --- ## ICPC World Finals (2019) - **Contest Slug:** `finals` - **Year:** 2019 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/ACM-ICPC%20World%20Finals%202019) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2021) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------- | :-------------------------------- | :------------------------- | :---------------------------------------------------------------------: | :---------------------------------------: | | **A** | Azulejos | `finals/2019/A-azulejos` | `finals/2019/icpc2019.pdf` | [azulejos](https://open.kattis.com/problems/azulejos) | [17150](https://solved.ac/problems/17150) | | **B** | Beautiful Bridges | `finals/2019/B-beautifulbridges` | `finals/2019/icpc2019.pdf` | [beautifulbridges](https://open.kattis.com/problems/beautifulbridges) | [17151](https://solved.ac/problems/17151) | | **C** | Checks Post Facto | `finals/2019/C-checks` | `finals/2019/icpc2019.pdf` | [checks](https://open.kattis.com/problems/checks) | [17152](https://solved.ac/problems/17152) | | **D** | Circular DNA | `finals/2019/D-circular` | `finals/2019/icpc2019.pdf` | [circular](https://open.kattis.com/problems/circular) | [17153](https://solved.ac/problems/17153) | | **E** | Dead-End Detector | `finals/2019/E-deadend` | `finals/2019/icpc2019.pdf` | [deadend](https://open.kattis.com/problems/deadend) | [17154](https://solved.ac/problems/17154) | | **F** | Directing Rainfall | `finals/2019/F-directingrainfall` | `finals/2019/icpc2019.pdf` | [directingrainfall](https://open.kattis.com/problems/directingrainfall) | [17155](https://solved.ac/problems/17155) | | **G** | First of Her Name | `finals/2019/G-firstofhername` | `finals/2019/icpc2019.pdf` | [firstofhername](https://open.kattis.com/problems/firstofhername) | [17156](https://solved.ac/problems/17156) | | **H** | Hobson's Trains | `finals/2019/H-hobsonstrains` | `finals/2019/icpc2019.pdf` | [hobsonstrains](https://open.kattis.com/problems/hobsonstrains) | [17157](https://solved.ac/problems/17157) | | **I** | Karel the Robot | `finals/2019/I-karel` | `finals/2019/icpc2019.pdf` | [karel](https://open.kattis.com/problems/karel) | [17158](https://solved.ac/problems/17158) | | **J** | Miniature Golf | `finals/2019/J-minigolf` | `finals/2019/icpc2019.pdf` | [minigolf](https://open.kattis.com/problems/minigolf) | [17159](https://solved.ac/problems/17159) | | **K** | Traffic Blights | `finals/2019/K-trafficblights` | `finals/2019/icpc2019.pdf` | [trafficblights](https://open.kattis.com/problems/trafficblights) | [17160](https://solved.ac/problems/17160) | --- ## ICPC World Finals (2020) - **Contest Slug:** `finals` - **Year:** 2020 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/ICPC%20World%20Finals%202020) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2805) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :----------------------------- | :------------------------- | :---------------------------------------------------------------: | :---------------------------------------: | | **A** | Cardiology | `finals/2020/A-cardiology` | `finals/2020/icpc2020.pdf` | [cardiology](https://open.kattis.com/problems/cardiology) | [23192](https://solved.ac/problems/23192) | | **B** | The Cost of Speed Limits | `finals/2020/B-speedlimit` | `finals/2020/icpc2020.pdf` | [speedlimit2](https://open.kattis.com/problems/speedlimit2) | [23193](https://solved.ac/problems/23193) | | **C** | Domes | `finals/2020/C-domes` | `finals/2020/icpc2020.pdf` | [domes](https://open.kattis.com/problems/domes) | [23194](https://solved.ac/problems/23194) | | **D** | Gene Folding | `finals/2020/D-genefolding` | `finals/2020/icpc2020.pdf` | [genefolding](https://open.kattis.com/problems/genefolding) | [23195](https://solved.ac/problems/23195) | | **E** | Landscape Generator | `finals/2020/E-landscape` | `finals/2020/icpc2020.pdf` | [landscape](https://open.kattis.com/problems/landscape) | [23196](https://solved.ac/problems/23196) | | **F** | Ley Lines | `finals/2020/F-leylines` | `finals/2020/icpc2020.pdf` | [leylines](https://open.kattis.com/problems/leylines) | [23197](https://solved.ac/problems/23197) | | **G** | Opportunity Cost | `finals/2020/G-opportunity` | `finals/2020/icpc2020.pdf` | [opportunity](https://open.kattis.com/problems/opportunity) | [23198](https://solved.ac/problems/23198) | | **H** | QC QC | `finals/2020/H-qcqc` | `finals/2020/icpc2020.pdf` | [qcqc](https://open.kattis.com/problems/qcqc) | [23199](https://solved.ac/problems/23199) | | **I** | Quests | `finals/2020/I-quests` | `finals/2020/icpc2020.pdf` | [quests](https://open.kattis.com/problems/quests) | [23200](https://solved.ac/problems/23200) | | **J** | 'S No Problem | `finals/2020/J-snoproblem` | `finals/2020/icpc2020.pdf` | [snoproblem](https://open.kattis.com/problems/snoproblem) | [23201](https://solved.ac/problems/23201) | | **K** | Space Walls | `finals/2020/K-space` | `finals/2020/icpc2020.pdf` | [space](https://open.kattis.com/problems/space) | [23202](https://solved.ac/problems/23202) | | **L** | Sweep Stakes | `finals/2020/L-sweepstakes` | `finals/2020/icpc2020.pdf` | [sweepstakes](https://open.kattis.com/problems/sweepstakes) | [23203](https://solved.ac/problems/23203) | | **M** | Trailing Digits | `finals/2020/M-trailingdigits` | `finals/2020/icpc2020.pdf` | [trailingdigits](https://open.kattis.com/problems/trailingdigits) | [23204](https://solved.ac/problems/23204) | | **N** | What's Our Vector, Victor? | `finals/2020/N-vector` | `finals/2020/icpc2020.pdf` | [vector](https://open.kattis.com/problems/vector) | [23205](https://solved.ac/problems/23205) | | **O** | Which Planet is This?! | `finals/2020/O-planets` | `finals/2020/icpc2020.pdf` | [planets](https://open.kattis.com/problems/planets) | [23206](https://solved.ac/problems/23206) | --- ## ICPC World Finals (2021) - **Contest Slug:** `finals` - **Year:** 2021 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/ICPC%20World%20Finals%202021) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/3230) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------- | :------------------------------------ | :------------------------- | :-----------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Crystal Crosswind | `finals/2021/A-cross` | `finals/2021/icpc2021.pdf` | [crystalcrosswind](https://open.kattis.com/problems/crystalcrosswind) | [26130](https://solved.ac/problems/26130) | | **B** | Dungeon Crawler | `finals/2021/B-dungeoncrawler` | `finals/2021/icpc2021.pdf` | [dungeoncrawler](https://open.kattis.com/problems/dungeoncrawler) | [26131](https://solved.ac/problems/26131) | | **C** | Fair Division | `finals/2021/C-fairdivision` | `finals/2021/icpc2021.pdf` | [fairdivision2](https://open.kattis.com/problems/fairdivision2) | [26132](https://solved.ac/problems/26132) | | **D** | Guardians of the Gallery | `finals/2021/D-guardiansofthegallery` | `finals/2021/icpc2021.pdf` | [guardiansofthegallery](https://open.kattis.com/problems/guardiansofthegallery) | [26133](https://solved.ac/problems/26133) | | **E** | Hand of the Free Marked | `finals/2021/E-marked` | `finals/2021/icpc2021.pdf` | [handofthefreemarked](https://open.kattis.com/problems/handofthefreemarked) | [26134](https://solved.ac/problems/26134) | | **F** | Islands from the Sky | `finals/2021/F-islands` | `finals/2021/icpc2021.pdf` | [islandsfromthesky](https://open.kattis.com/problems/islandsfromthesky) | [26135](https://solved.ac/problems/26135) | | **G** | Mosaic Browsing | `finals/2021/G-mosaicbrowsing` | `finals/2021/icpc2021.pdf` | [mosaicbrowsing](https://open.kattis.com/problems/mosaicbrowsing) | [26136](https://solved.ac/problems/26136) | | **H** | Prehistoric Programs | `finals/2021/H-prehistoricprograms` | `finals/2021/icpc2021.pdf` | [prehistoricprograms](https://open.kattis.com/problems/prehistoricprograms) | [26137](https://solved.ac/problems/26137) | | **I** | Spider Walk | `finals/2021/I-spiderwalk` | `finals/2021/icpc2021.pdf` | [spiderwalk](https://open.kattis.com/problems/spiderwalk) | [26138](https://solved.ac/problems/26138) | | **J** | Splitstream | `finals/2021/J-splitstream` | `finals/2021/icpc2021.pdf` | [splitstream](https://open.kattis.com/problems/splitstream) | [26139](https://solved.ac/problems/26139) | | **K** | Take On Meme | `finals/2021/K-meme` | `finals/2021/icpc2021.pdf` | [takeonmeme](https://open.kattis.com/problems/takeonmeme) | [26140](https://solved.ac/problems/26140) | | **L** | Where Am I? | `finals/2021/L-whereami` | `finals/2021/icpc2021.pdf` | [whereami](https://open.kattis.com/problems/whereami) | [26141](https://solved.ac/problems/26141) | --- ## ICPC World Finals (2022) - **Contest Slug:** `finals` - **Year:** 2022 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/ICPC%20World%20Finals%202022%20and%202023) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4210) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------- | :--------------------------------------- | :------------------------- | :-----------------------------------------------------------------------------------: | :---------------------------------------: | | **P** | Turning Red | `finals/2022/P-turningred` | `finals/2022/icpc2022.pdf` | [turningred](https://open.kattis.com/problems/turningred) | [31890](https://solved.ac/problems/31890) | | **Q** | Doing the Container Shuffle | `finals/2022/Q-doingthecontainershuffle` | `finals/2022/icpc2022.pdf` | [doingthecontainershuffle](https://open.kattis.com/problems/doingthecontainershuffle) | [31891](https://solved.ac/problems/31891) | | **R** | Zoo Management | `finals/2022/R-zoomanagement` | `finals/2022/icpc2022.pdf` | [zoomanagement](https://open.kattis.com/problems/zoomanagement) | [31892](https://solved.ac/problems/31892) | | **S** | Bridging the Gap | `finals/2022/S-bridgingthegap` | `finals/2022/icpc2022.pdf` | [bridgingthegap](https://open.kattis.com/problems/bridgingthegap) | [31893](https://solved.ac/problems/31893) | | **T** | Carl's Vacation | `finals/2022/T-carlsvacation` | `finals/2022/icpc2022.pdf` | [carlsvacation](https://open.kattis.com/problems/carlsvacation) | [31894](https://solved.ac/problems/31894) | | **U** | Toy Train Tracks | `finals/2022/U-toytraintracks` | `finals/2022/icpc2022.pdf` | [toytraintracks](https://open.kattis.com/problems/toytraintracks) | [31895](https://solved.ac/problems/31895) | | **V** | Three Kinds of Dice | `finals/2022/V-threekindsofdice` | `finals/2022/icpc2022.pdf` | [threekindsofdice](https://open.kattis.com/problems/threekindsofdice) | [31896](https://solved.ac/problems/31896) | | **W** | Riddle of the Sphinx | `finals/2022/W-riddleofthesphinx` | `finals/2022/icpc2022.pdf` | [riddleofthesphinx](https://open.kattis.com/problems/riddleofthesphinx) | [31897](https://solved.ac/problems/31897) | | **X** | Quartets | `finals/2022/X-quartets` | `finals/2022/icpc2022.pdf` | [quartets](https://open.kattis.com/problems/quartets) | [31898](https://solved.ac/problems/31898) | | **Y** | Compression | `finals/2022/Y-compression` | `finals/2022/icpc2022.pdf` | [compression2](https://open.kattis.com/problems/compression2) | [31899](https://solved.ac/problems/31899) | | **Z** | Archaeological Recovery | `finals/2022/Z-archaeologicalrecovery` | `finals/2022/icpc2022.pdf` | [archaeologicalrecovery](https://open.kattis.com/problems/archaeologicalrecovery) | [31900](https://solved.ac/problems/31900) | --- ## ICPC World Finals (2023) - **Contest Slug:** `finals` - **Year:** 2023 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/ICPC%20World%20Finals%202023) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4211) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------- | :-------------------------------- | :------------------------- | :---------------------------------------------------------------------: | :---------------------------------------: | | **A** | Riddle of the Sphinx | `finals/2023/A-riddleofthesphinx` | `finals/2023/icpc2023.pdf` | [riddleofthesphinx](https://open.kattis.com/problems/riddleofthesphinx) | [31897](https://solved.ac/problems/31897) | | **B** | Schedule | `finals/2023/B-schedule` | `finals/2023/icpc2023.pdf` | [schedule](https://open.kattis.com/problems/schedule) | [31901](https://solved.ac/problems/31901) | | **C** | Three Kinds of Dice | `finals/2023/C-threekindsofdice` | `finals/2023/icpc2023.pdf` | [threekindsofdice](https://open.kattis.com/problems/threekindsofdice) | [31896](https://solved.ac/problems/31896) | | **D** | Carl's Vacation | `finals/2023/D-carlsvacation` | `finals/2023/icpc2023.pdf` | [carlsvacation](https://open.kattis.com/problems/carlsvacation) | [31894](https://solved.ac/problems/31894) | | **E** | A Recurring Problem | `finals/2023/E-arecurringproblem` | `finals/2023/icpc2023.pdf` | [arecurringproblem](https://open.kattis.com/problems/arecurringproblem) | [31902](https://solved.ac/problems/31902) | | **F** | Tilting Tiles | `finals/2023/F-tiltingtiles` | `finals/2023/icpc2023.pdf` | [tiltingtiles](https://open.kattis.com/problems/tiltingtiles) | [31903](https://solved.ac/problems/31903) | | **G** | Turning Red | `finals/2023/G-turningred` | `finals/2023/icpc2023.pdf` | [turningred](https://open.kattis.com/problems/turningred) | [31890](https://solved.ac/problems/31890) | | **H** | Jet Lag | `finals/2023/H-jetlag` | `finals/2023/icpc2023.pdf` | [jetlag](https://open.kattis.com/problems/jetlag) | [31904](https://solved.ac/problems/31904) | | **I** | Waterworld | `finals/2023/I-waterworld` | `finals/2023/icpc2023.pdf` | [waterworld](https://open.kattis.com/problems/waterworld) | [31905](https://solved.ac/problems/31905) | | **J** | Bridging the Gap | `finals/2023/J-bridgingthegap` | `finals/2023/icpc2023.pdf` | [bridgingthegap](https://open.kattis.com/problems/bridgingthegap) | [31893](https://solved.ac/problems/31893) | | **K** | Alea Iacta Est | `finals/2023/K-aleaiactaest` | `finals/2023/icpc2023.pdf` | [aleaiactaest](https://open.kattis.com/problems/aleaiactaest) | [31906](https://solved.ac/problems/31906) | --- ## ICPC World Finals (2024) - **Contest Slug:** `finals` - **Year:** 2024 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/ICPC%20World%20Finals%202024) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4292) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------- | :---------------------------------------- | :------------------------- | :-------------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Billboards | `finals/2024/A-billboards` | `finals/2024/icpc2024.pdf` | [billboards](https://open.kattis.com/problems/billboards) | [32420](https://solved.ac/problems/32420) | | **B** | Bingo for the Win! | `finals/2024/B-bingoforthewin` | `finals/2024/icpc2024.pdf` | [bingoforthewin](https://open.kattis.com/problems/bingoforthewin) | [32421](https://solved.ac/problems/32421) | | **C** | Citizenship | `finals/2024/C-citizenship` | `finals/2024/icpc2024.pdf` | [citizenship](https://open.kattis.com/problems/citizenship) | [32422](https://solved.ac/problems/32422) | | **D** | Doubles Horseback Wrestling | `finals/2024/D-doubleshorsebackwrestling` | `finals/2024/icpc2024.pdf` | [doubleshorsebackwrestling](https://open.kattis.com/problems/doubleshorsebackwrestling) | [32423](https://solved.ac/problems/32423) | | **E** | Flipping Container | `finals/2024/E-flippingcontainer` | `finals/2024/icpc2024.pdf` | [flippingcontainer](https://open.kattis.com/problems/flippingcontainer) | [32424](https://solved.ac/problems/32424) | | **F** | Friendly Rivalry | `finals/2024/F-friendlyrivalry` | `finals/2024/icpc2024.pdf` | [friendlyrivalry](https://open.kattis.com/problems/friendlyrivalry) | [32425](https://solved.ac/problems/32425) | | **G** | Kindergarten | `finals/2024/G-kindergarten` | `finals/2024/icpc2024.pdf` | [kindergarten2](https://open.kattis.com/problems/kindergarten2) | [32426](https://solved.ac/problems/32426) | | **H** | Maxwell's Demon | `finals/2024/H-maxwellsdemon` | `finals/2024/icpc2024.pdf` | [maxwellsdemon](https://open.kattis.com/problems/maxwellsdemon) | [32427](https://solved.ac/problems/32427) | | **I** | Steppe on It | `finals/2024/I-steppeonit` | `finals/2024/icpc2024.pdf` | [steppeonit](https://open.kattis.com/problems/steppeonit) | [32428](https://solved.ac/problems/32428) | | **J** | The Silk Road . . . with Robots! | `finals/2024/J-thesilkroad` | `finals/2024/icpc2024.pdf` | [thesilkroad](https://open.kattis.com/problems/thesilkroad) | [32429](https://solved.ac/problems/32429) | | **K** | Tower of noiHa | `finals/2024/K-towerofnoiha` | `finals/2024/icpc2024.pdf` | [towerofnoiha](https://open.kattis.com/problems/towerofnoiha) | [32430](https://solved.ac/problems/32430) | | **L** | Where Am I Now? | `finals/2024/L-whereaminow` | `finals/2024/icpc2024.pdf` | [whereaminow](https://open.kattis.com/problems/whereaminow) | [32431](https://solved.ac/problems/32431) | --- ## ICPC World Finals (2025) - **Contest Slug:** `finals` - **Year:** 2025 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/ICPC%20World%20Finals%202025) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4567) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------- | :-------------------------------- | :--------------------------- | :---------------------------------------------------------------------: | :---------------------------------------: | | **A** | Skew-ed Reasoning | `finals/2025/A-askewedreasoning` | `finals/2025/problemset.pdf` | [askewedreasoning](https://open.kattis.com/problems/askewedreasoning) | [34476](https://solved.ac/problems/34476) | | **B** | Blackboard Game | `finals/2025/B-blackboardgame` | `finals/2025/problemset.pdf` | [blackboardgame](https://open.kattis.com/problems/blackboardgame) | [34477](https://solved.ac/problems/34477) | | **C** | Bride of Pipe Stream | `finals/2025/C-brideofpipestream` | `finals/2025/problemset.pdf` | [brideofpipestream](https://open.kattis.com/problems/brideofpipestream) | [34478](https://solved.ac/problems/34478) | | **D** | Buggy Rover | `finals/2025/D-buggyrover` | `finals/2025/problemset.pdf` | [buggyrover](https://open.kattis.com/problems/buggyrover) | [34479](https://solved.ac/problems/34479) | | **E** | Delivery Service | `finals/2025/E-delivery` | `finals/2025/problemset.pdf` | [deliveryservice](https://open.kattis.com/problems/deliveryservice) | [34480](https://solved.ac/problems/34480) | | **F** | Herding Cats | `finals/2025/F-herdingcats` | `finals/2025/problemset.pdf` | [herdingcats](https://open.kattis.com/problems/herdingcats) | [34481](https://solved.ac/problems/34481) | | **G** | Lava Moat | `finals/2025/G-lavamoat` | `finals/2025/problemset.pdf` | [lavamoat](https://open.kattis.com/problems/lavamoat) | [34482](https://solved.ac/problems/34482) | | **H** | Score Values | `finals/2025/H-scorevalues` | `finals/2025/problemset.pdf` | [scorevalues](https://open.kattis.com/problems/scorevalues) | [34483](https://solved.ac/problems/34483) | | **I** | Slot Machine | `finals/2025/I-slotmachine` | `finals/2025/problemset.pdf` | [slotmachine](https://open.kattis.com/problems/slotmachine) | [34484](https://solved.ac/problems/34484) | | **J** | Stacking Cups | `finals/2025/J-stackingcups` | `finals/2025/problemset.pdf` | [stackingcups](https://open.kattis.com/problems/stackingcups) | [34485](https://solved.ac/problems/34485) | | **K** | Treasure Map | `finals/2025/K-treasuremap` | `finals/2025/problemset.pdf` | [treasuremap2](https://open.kattis.com/problems/treasuremap2) | [34486](https://solved.ac/problems/34486) | | **L** | Walking on Sunshine | `finals/2025/L-walkingonsunshine` | `finals/2025/problemset.pdf` | [walkingonsunshine](https://open.kattis.com/problems/walkingonsunshine) | [34487](https://solved.ac/problems/34487) | --- ## German Collegiate Programming Championship (2010) - **Contest Slug:** `gcpc` - **Year:** 2010 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/219) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------ | :---------------- | :------------------------------ | :----: | :-------------------------------------: | | **A** | Absurd prices | `gcpc/2010/A` | `gcpc/2010/problemset_2010.pdf` | - | [3974](https://solved.ac/problems/3974) | | **B** | Cheating or Not | `gcpc/2010/B` | `gcpc/2010/problemset_2010.pdf` | - | [3975](https://solved.ac/problems/3975) | | **C** | Counterattack | `gcpc/2010/C` | `gcpc/2010/problemset_2010.pdf` | - | [3976](https://solved.ac/problems/3976) | | **D** | Field Plan | `gcpc/2010/D` | `gcpc/2010/problemset_2010.pdf` | - | [3977](https://solved.ac/problems/3977) | | **E** | Hacking | `gcpc/2010/E` | `gcpc/2010/problemset_2010.pdf` | - | [3978](https://solved.ac/problems/3978) | | **F** | Last Minute Constructions | `gcpc/2010/F` | `gcpc/2010/problemset_2010.pdf` | - | [3979](https://solved.ac/problems/3979) | | **G** | Lineup | `gcpc/2010/G` | `gcpc/2010/problemset_2010.pdf` | - | [3980](https://solved.ac/problems/3980) | | **H** | Polynomial Estimates | `gcpc/2010/H` | `gcpc/2010/problemset_2010.pdf` | - | [3981](https://solved.ac/problems/3981) | | **I** | Soccer Bets | `gcpc/2010/I` | `gcpc/2010/problemset_2010.pdf` | - | [3982](https://solved.ac/problems/3982) | | **J** | The Two-ball Game | `gcpc/2010/J` | `gcpc/2010/problemset_2010.pdf` | - | [3983](https://solved.ac/problems/3983) | | **K** | To score or not to score | `gcpc/2010/K` | `gcpc/2010/problemset_2010.pdf` | - | [3984](https://solved.ac/problems/3984) | --- ## German Collegiate Programming Championship (2011) - **Contest Slug:** `gcpc` - **Year:** 2011 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/German%20Collegiate%20Programming%20Contest%20%28GCPC%29%202011) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/218) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------------ | :-------------------------------- | :------------------------------ | :-----------------------------------------------------------------------------: | :-------------------------------------: | | **A** | Faculty Dividing Powers | `gcpc/2011/FacultyDividingPowers` | `gcpc/2011/problemset_2011.pdf` | [facultydividingpowers](https://open.kattis.com/problems/facultydividingpowers) | [3964](https://solved.ac/problems/3964) | | **B** | Genetic Fraud | `gcpc/2011/GeneticFraud` | `gcpc/2011/problemset_2011.pdf` | [geneticfraud](https://open.kattis.com/problems/geneticfraud) | [3965](https://solved.ac/problems/3965) | | **C** | Indiana Jones and the lost Soccer Cup | `gcpc/2011/IndianaJones` | `gcpc/2011/problemset_2011.pdf` | [indianajones](https://open.kattis.com/problems/indianajones) | [3966](https://solved.ac/problems/3966) | | **D** | Magic Star | `gcpc/2011/MagicStar` | `gcpc/2011/problemset_2011.pdf` | [magicstar](https://open.kattis.com/problems/magicstar) | [3967](https://solved.ac/problems/3967) | | **E** | Magical Crafting | `gcpc/2011/MagicalCrafting` | `gcpc/2011/problemset_2011.pdf` | [magicalcrafting](https://open.kattis.com/problems/magicalcrafting) | [3968](https://solved.ac/problems/3968) | | **F** | My brother's diary | `gcpc/2011/CaesarCipher` | `gcpc/2011/problemset_2011.pdf` | [brothersdiary](https://open.kattis.com/problems/brothersdiary) | [3969](https://solved.ac/problems/3969) | | **G** | Security Zone | `gcpc/2011/SecurityZone` | `gcpc/2011/problemset_2011.pdf` | [securityzone](https://open.kattis.com/problems/securityzone) | [3970](https://solved.ac/problems/3970) | | **H** | Sightseeing | `gcpc/2011/Sightseeing` | `gcpc/2011/problemset_2011.pdf` | [sightseeing2](https://open.kattis.com/problems/sightseeing2) | [3971](https://solved.ac/problems/3971) | | **I** | Suiting Weavers | `gcpc/2011/SuitingWeavers` | `gcpc/2011/problemset_2011.pdf` | [suitingweavers](https://open.kattis.com/problems/suitingweavers) | [3972](https://solved.ac/problems/3972) | | **J** | Time To Live | `gcpc/2011/TimeToLive` | `gcpc/2011/problemset_2011.pdf` | [timetolive](https://open.kattis.com/problems/timetolive) | [3973](https://solved.ac/problems/3973) | --- ## German Collegiate Programming Championship (2013) - **Contest Slug:** `gcpc` - **Year:** 2013 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/German%20Collegiate%20Programming%20Contest%20%28GCPC%29%202013) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1110) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------- | :---------------- | :----------------------- | :---------------------------------------------------------------------: | :-------------------------------------: | | **A** | Boggle | `gcpc/2013/A` | `gcpc/2013/problems.pdf` | [boggle](https://open.kattis.com/problems/boggle) | [9202](https://solved.ac/problems/9202) | | **B** | Booking | `gcpc/2013/B` | `gcpc/2013/problems.pdf` | [booking](https://open.kattis.com/problems/booking) | [9203](https://solved.ac/problems/9203) | | **C** | Chess | `gcpc/2013/C` | `gcpc/2013/problems.pdf` | [chess](https://open.kattis.com/problems/chess) | [9204](https://solved.ac/problems/9204) | | **D** | Kastenlauf | `gcpc/2013/D` | `gcpc/2013/problems.pdf` | [kastenlauf](https://open.kattis.com/problems/kastenlauf) | [9205](https://solved.ac/problems/9205) | | **E** | No Trees But Flowers | `gcpc/2013/E` | `gcpc/2013/problems.pdf` | [flowers](https://open.kattis.com/problems/flowers) | [9206](https://solved.ac/problems/9206) | | **F** | Peg Solitaire | `gcpc/2013/F` | `gcpc/2013/problems.pdf` | [solitaire](https://open.kattis.com/problems/solitaire) | [9207](https://solved.ac/problems/9207) | | **G** | Ringworld | `gcpc/2013/G` | `gcpc/2013/problems.pdf` | [ringworld](https://open.kattis.com/problems/ringworld) | [9208](https://solved.ac/problems/9208) | | **H** | The King of the North | `gcpc/2013/H` | `gcpc/2013/problems.pdf` | [thekingofthenorth](https://open.kattis.com/problems/thekingofthenorth) | [9209](https://solved.ac/problems/9209) | | **I** | Ticket Draw | `gcpc/2013/I` | `gcpc/2013/problems.pdf` | [tickets](https://open.kattis.com/problems/tickets) | [9210](https://solved.ac/problems/9210) | | **J** | Timing | `gcpc/2013/J` | `gcpc/2013/problems.pdf` | [timing](https://open.kattis.com/problems/timing) | [9211](https://solved.ac/problems/9211) | | **K** | Triangles | `gcpc/2013/K` | `gcpc/2013/problems.pdf` | [triangles](https://open.kattis.com/problems/triangles) | [9212](https://solved.ac/problems/9212) | --- ## German Collegiate Programming Championship (2014) - **Contest Slug:** `gcpc` - **Year:** 2014 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/German%20Collegiate%20Programming%20Contest%20%28GCPC%29%202014) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1285) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------- | :---------------------------- | :----------------------- | :---------------------------------------------------------------------: | :---------------------------------------: | | **A** | Algebraic Teamwork | `gcpc/2014/algebraicteamwork` | `gcpc/2014/problems.pdf` | [algebraicteamwork](https://open.kattis.com/problems/algebraicteamwork) | [10270](https://solved.ac/problems/10270) | | **B** | Beam me out! | `gcpc/2014/beammeout` | `gcpc/2014/problems.pdf` | [beammeout](https://open.kattis.com/problems/beammeout) | [10271](https://solved.ac/problems/10271) | | **C** | Bounty Hunter | `gcpc/2014/bountyhunter` | `gcpc/2014/problems.pdf` | [bountyhunter](https://open.kattis.com/problems/bountyhunter) | [10272](https://solved.ac/problems/10272) | | **D** | Connected Caves | `gcpc/2014/connectedcaves` | `gcpc/2014/problems.pdf` | [connectedcaves](https://open.kattis.com/problems/connectedcaves) | [10273](https://solved.ac/problems/10273) | | **E** | Equator | `gcpc/2014/equator` | `gcpc/2014/problems.pdf` | [equator](https://open.kattis.com/problems/equator) | [10274](https://solved.ac/problems/10274) | | **F** | Gold Rush | `gcpc/2014/goldrush` | `gcpc/2014/problems.pdf` | [goldrush](https://open.kattis.com/problems/goldrush) | [10275](https://solved.ac/problems/10275) | | **G** | Jewelry Exhibition | `gcpc/2014/laserguaerd` | `gcpc/2014/problems.pdf` | [jewelryexhibition](https://open.kattis.com/problems/jewelryexhibition) | [10276](https://solved.ac/problems/10276) | | **H** | JuQueen | `gcpc/2014/juqueen` | `gcpc/2014/problems.pdf` | [juqueen](https://open.kattis.com/problems/juqueen) | [10277](https://solved.ac/problems/10277) | | **I** | Laser Cutting | `gcpc/2014/lasercutting` | `gcpc/2014/problems.pdf` | [lasercutting](https://open.kattis.com/problems/lasercutting) | [10278](https://solved.ac/problems/10278) | | **J** | Not a subsequence | `gcpc/2014/notsubsequence` | `gcpc/2014/problems.pdf` | [notsubsequence](https://open.kattis.com/problems/notsubsequence) | [10279](https://solved.ac/problems/10279) | | **K** | Pizza voting | `gcpc/2014/pizzavoting` | `gcpc/2014/problems.pdf` | [pizzavoting](https://open.kattis.com/problems/pizzavoting) | [10280](https://solved.ac/problems/10280) | --- ## German Collegiate Programming Championship (2016) - **Contest Slug:** `gcpc` - **Year:** 2016 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/German%20Collegiate%20Programming%20Contest%20%28GCPC%29%202016) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1509) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------------- | :---------------------------------- | :----------------------- | :---------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Dwarves | `gcpc/2016/dwarves` | `gcpc/2016/problems.pdf` | [dwarves](https://open.kattis.com/problems/dwarves) | [13147](https://solved.ac/problems/13147) | | **B** | Correcting Cheeseburgers | `gcpc/2016/correctingcheeseburgers` | `gcpc/2016/problems.pdf` | [correctingcheeseburgers](https://open.kattis.com/problems/correctingcheeseburgers) | [13148](https://solved.ac/problems/13148) | | **C** | Knapsack in a Globalized World | `gcpc/2016/knapsack` | `gcpc/2016/problems.pdf` | [knapsack2](https://open.kattis.com/problems/knapsack2) | [13149](https://solved.ac/problems/13149) | | **D** | Matrix Cypher | `gcpc/2016/matrixcypher` | `gcpc/2016/problems.pdf` | [matrixcypher](https://open.kattis.com/problems/matrixcypher) | [13150](https://solved.ac/problems/13150) | | **E** | Model Railroad | `gcpc/2016/modelrailroad` | `gcpc/2016/problems.pdf` | [modelrailroad](https://open.kattis.com/problems/modelrailroad) | [13151](https://solved.ac/problems/13151) | | **F** | One-Way Roads | `gcpc/2016/oneway` | `gcpc/2016/problems.pdf` | [oneway](https://open.kattis.com/problems/oneway) | [13152](https://solved.ac/problems/13152) | | **G** | Formula | `gcpc/2016/formula` | `gcpc/2016/problems.pdf` | [formula](https://open.kattis.com/problems/formula) | [13153](https://solved.ac/problems/13153) | | **H** | Celestial Map | `gcpc/2016/celestialmap` | `gcpc/2016/problems.pdf` | [celestialmap](https://open.kattis.com/problems/celestialmap) | [13154](https://solved.ac/problems/13154) | | **I** | Common Knowledge | `gcpc/2016/commonknowledge` | `gcpc/2016/problems.pdf` | [commonknowledge](https://open.kattis.com/problems/commonknowledge) | [13155](https://solved.ac/problems/13155) | | **J** | Selling CPUs | `gcpc/2016/selling` | `gcpc/2016/problems.pdf` | [selling](https://open.kattis.com/problems/selling) | [13156](https://solved.ac/problems/13156) | | **K** | Routing | `gcpc/2016/routing` | `gcpc/2016/problems.pdf` | [routing2](https://open.kattis.com/problems/routing2) | [13157](https://solved.ac/problems/13157) | | **L** | Maze | `gcpc/2016/maze` | `gcpc/2016/problems.pdf` | [maze3](https://open.kattis.com/problems/maze3) | [13158](https://solved.ac/problems/13158) | --- ## German Collegiate Programming Championship (2019) - **Contest Slug:** `gcpc` - **Year:** 2019 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/German%20Collegiate%20Programming%20Contest%20%28GCPC%29%202019) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2119) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------ | :------------------------------ | :----------------------- | :-------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Assessing Genomes | `gcpc/2019/assessinggenomes` | `gcpc/2019/problems.pdf` | [assessinggenomes](https://open.kattis.com/problems/assessinggenomes) | [18054](https://solved.ac/problems/18054) | | **B** | Bouldering | `gcpc/2019/bouldering` | `gcpc/2019/problems.pdf` | [bouldering](https://open.kattis.com/problems/bouldering) | [18055](https://solved.ac/problems/18055) | | **C** | Colourful Chameleons | `gcpc/2019/colourfulchameleons` | `gcpc/2019/problems.pdf` | [colourfulchameleons](https://open.kattis.com/problems/colourfulchameleons) | [18056](https://solved.ac/problems/18056) | | **D** | Dungeon Crawler | `gcpc/2019/dungeoncrawler` | `gcpc/2019/problems.pdf` | - | [18057](https://solved.ac/problems/18057) | | **E** | Election Meddling | `gcpc/2019/electionmeddling` | `gcpc/2019/problems.pdf` | [electionmeddling](https://open.kattis.com/problems/electionmeddling) | [18058](https://solved.ac/problems/18058) | | **F** | Final Standings | `gcpc/2019/finalstandings` | `gcpc/2019/problems.pdf` | [finalstandings](https://open.kattis.com/problems/finalstandings) | [18059](https://solved.ac/problems/18059) | | **G** | Game of Falling Blocks | `gcpc/2019/gameoffallingblocks` | `gcpc/2019/problems.pdf` | [gameoffallingblocks](https://open.kattis.com/problems/gameoffallingblocks) | [18060](https://solved.ac/problems/18060) | | **H** | Historical Maths | `gcpc/2019/historicalmaths` | `gcpc/2019/problems.pdf` | [historicalmaths](https://open.kattis.com/problems/historicalmaths) | [18061](https://solved.ac/problems/18061) | | **I** | Insertion Order | `gcpc/2019/insertionorder` | `gcpc/2019/problems.pdf` | [insertionorder](https://open.kattis.com/problems/insertionorder) | [18062](https://solved.ac/problems/18062) | | **J** | Jazz Enthusiast | `gcpc/2019/jazzenthusiast` | `gcpc/2019/problems.pdf` | [jazzenthusiast](https://open.kattis.com/problems/jazzenthusiast) | [18063](https://solved.ac/problems/18063) | | **K** | Keeping the Dogs Out | `gcpc/2019/keepingthedogsout` | `gcpc/2019/problems.pdf` | [keepingthedogsout](https://open.kattis.com/problems/keepingthedogsout) | [18064](https://solved.ac/problems/18064) | | **L** | Long-Exposure Photography | `gcpc/2019/longexposure` | `gcpc/2019/problems.pdf` | [longexposure](https://open.kattis.com/problems/longexposure) | [18065](https://solved.ac/problems/18065) | | **M** | Move & Meet | `gcpc/2019/moveandmeet` | `gcpc/2019/problems.pdf` | [moveandmeet](https://open.kattis.com/problems/moveandmeet) | [18066](https://solved.ac/problems/18066) | --- ## German Collegiate Programming Championship (2020) - **Contest Slug:** `gcpc` - **Year:** 2020 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/German%20Collegiate%20Programming%20Contest%20%28GCPC%29%202020) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2427) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------ | :---------------------- | :----------------------- | :-------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Adolescent Architecture | `gcpc/2020/adolescent` | `gcpc/2020/problems.pdf` | [adolescentarchitecture](https://open.kattis.com/problems/adolescentarchitecture) | [20901](https://solved.ac/problems/20901) | | **B** | Bookshelf Building | `gcpc/2020/bookshelf` | `gcpc/2020/problems.pdf` | [bookshelfbuilding](https://open.kattis.com/problems/bookshelfbuilding) | [20902](https://solved.ac/problems/20902) | | **C** | Confined Catching | `gcpc/2020/confined` | `gcpc/2020/problems.pdf` | [confinedcatching](https://open.kattis.com/problems/confinedcatching) | [20903](https://solved.ac/problems/20903) | | **D** | Decorative Dominoes | `gcpc/2020/dominoes` | `gcpc/2020/problems.pdf` | [decorativedominoes](https://open.kattis.com/problems/decorativedominoes) | [20904](https://solved.ac/problems/20904) | | **E** | Exhausting Errands | `gcpc/2020/errands` | `gcpc/2020/problems.pdf` | [exhaustingerrands](https://open.kattis.com/problems/exhaustingerrands) | [20905](https://solved.ac/problems/20905) | | **F** | Flip Flow | `gcpc/2020/flipflow` | `gcpc/2020/problems.pdf` | [flipflow](https://open.kattis.com/problems/flipflow) | [20906](https://solved.ac/problems/20906) | | **G** | Gravity Grid | `gcpc/2020/gravitygrid` | `gcpc/2020/problems.pdf` | [gravitygrid](https://open.kattis.com/problems/gravitygrid) | [20907](https://solved.ac/problems/20907) | | **H** | Hectic Harbour | `gcpc/2020/harbour` | `gcpc/2020/problems.pdf` | [hecticharbour](https://open.kattis.com/problems/hecticharbour) | [20908](https://solved.ac/problems/20908) | | **I** | Impressive Integers | `gcpc/2020/impressive` | `gcpc/2020/problems.pdf` | [impressiveintegers](https://open.kattis.com/problems/impressiveintegers) | [20909](https://solved.ac/problems/20909) | | **J** | Jeopardised Journey | `gcpc/2020/journey` | `gcpc/2020/problems.pdf` | [jeopardisedjourney](https://open.kattis.com/problems/jeopardisedjourney) | [20910](https://solved.ac/problems/20910) | | **K** | Knightly Knowledge | `gcpc/2020/knightly` | `gcpc/2020/problems.pdf` | [knightlyknowledge](https://open.kattis.com/problems/knightlyknowledge) | [20911](https://solved.ac/problems/20911) | | **L** | Lexicographical Lecturing | `gcpc/2020/lecturing` | `gcpc/2020/problems.pdf` | [lexicographiclecturing](https://open.kattis.com/problems/lexicographiclecturing) | [20912](https://solved.ac/problems/20912) | | **M** | Mixtape Management | `gcpc/2020/mixtape` | `gcpc/2020/problems.pdf` | [mixtapemanagement](https://open.kattis.com/problems/mixtapemanagement) | [20913](https://solved.ac/problems/20913) | --- ## German Collegiate Programming Championship (2021) - **Contest Slug:** `gcpc` - **Year:** 2021 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/German%20Collegiate%20Programming%20Contest%20%28GCPC%29%202021) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/3127) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------- | :--------------------------- | :----------------------- | :---------------------------------------------------------------------: | :---------------------------------------: | | **A** | Amusement Arcade | `gcpc/2021/arcade` | `gcpc/2021/problems.pdf` | [arcade2](https://open.kattis.com/problems/arcade2) | [25245](https://solved.ac/problems/25245) | | **B** | Brexiting and Brentering | `gcpc/2021/brentering` | `gcpc/2021/problems.pdf` | [brentering](https://open.kattis.com/problems/brentering) | [25246](https://solved.ac/problems/25246) | | **C** | Card Trading | `gcpc/2021/cardtrading` | `gcpc/2021/problems.pdf` | [cardtrading2](https://open.kattis.com/problems/cardtrading2) | [25247](https://solved.ac/problems/25247) | | **D** | Decrypting Zodiac | `gcpc/2021/decryptingzodiac` | `gcpc/2021/problems.pdf` | [decryptingzodiac](https://open.kattis.com/problems/decryptingzodiac) | [25248](https://solved.ac/problems/25248) | | **E** | Excursion to Porvoo | `gcpc/2021/excursion` | `gcpc/2021/problems.pdf` | [excursiontoporvoo](https://open.kattis.com/problems/excursiontoporvoo) | [25249](https://solved.ac/problems/25249) | | **F** | Flappy Bird | `gcpc/2021/flappy` | `gcpc/2021/problems.pdf` | [flappy](https://open.kattis.com/problems/flappy) | [25250](https://solved.ac/problems/25250) | | **G** | Grid Delivery | `gcpc/2021/griddelivery` | `gcpc/2021/problems.pdf` | [griddelivery](https://open.kattis.com/problems/griddelivery) | [25251](https://solved.ac/problems/25251) | | **H** | Hectic Harbour II | `gcpc/2021/harbour2` | `gcpc/2021/problems.pdf` | [harbour2](https://open.kattis.com/problems/harbour2) | [25252](https://solved.ac/problems/25252) | | **I** | Index Case | `gcpc/2021/indexcase` | `gcpc/2021/problems.pdf` | [indexcase](https://open.kattis.com/problems/indexcase) | [25253](https://solved.ac/problems/25253) | | **J** | Joined Sessions | `gcpc/2021/joinedsessions` | `gcpc/2021/problems.pdf` | [joinedsessions](https://open.kattis.com/problems/joinedsessions) | [25254](https://solved.ac/problems/25254) | | **K** | Killjoys' Conference | `gcpc/2021/killjoys` | `gcpc/2021/problems.pdf` | [killjoys](https://open.kattis.com/problems/killjoys) | [25255](https://solved.ac/problems/25255) | | **L** | Looking for Waldo | `gcpc/2021/lookingforwaldo` | `gcpc/2021/problems.pdf` | [lookingforwaldo](https://open.kattis.com/problems/lookingforwaldo) | [25256](https://solved.ac/problems/25256) | | **M** | Monty's Hall | `gcpc/2021/montyshall` | `gcpc/2021/problems.pdf` | [montyshall](https://open.kattis.com/problems/montyshall) | [25257](https://solved.ac/problems/25257) | | **N** | Natural Navigation | `gcpc/2021/navigation` | `gcpc/2021/problems.pdf` | [navigation](https://open.kattis.com/problems/navigation) | [25258](https://solved.ac/problems/25258) | --- ## German Collegiate Programming Championship (2022) - **Contest Slug:** `gcpc` - **Year:** 2022 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/German%20Collegiate%20Programming%20Contest%20%28GCPC%29%202022) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/3223) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------- | :---------------------------------- | :----------------------- | :---------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Alternative Architecture | `gcpc/2022/alternativearchitecture` | `gcpc/2022/problems.pdf` | [alternativearchitecture](https://open.kattis.com/problems/alternativearchitecture) | [26011](https://solved.ac/problems/26011) | | **B** | Breeding Bugs | `gcpc/2022/breedingbugs` | `gcpc/2022/problems.pdf` | [breedingbugs](https://open.kattis.com/problems/breedingbugs) | [26012](https://solved.ac/problems/26012) | | **C** | Chaotic Construction | `gcpc/2022/chaoticconstruction` | `gcpc/2022/problems.pdf` | [chaoticconstruction](https://open.kattis.com/problems/chaoticconstruction) | [26013](https://solved.ac/problems/26013) | | **D** | Diabolic Doofenshmirtz | `gcpc/2022/diabolicdoofenshmirtz` | `gcpc/2022/problems.pdf` | [diabolicdoofenshmirtz](https://open.kattis.com/problems/diabolicdoofenshmirtz) | [26014](https://solved.ac/problems/26014) | | **E** | Enjoyable Entree | `gcpc/2022/enjoyableentree` | `gcpc/2022/problems.pdf` | [enjoyableentree](https://open.kattis.com/problems/enjoyableentree) | [26015](https://solved.ac/problems/26015) | | **F** | Formula Flatland | `gcpc/2022/formulaflatland` | `gcpc/2022/problems.pdf` | [formulaflatland](https://open.kattis.com/problems/formulaflatland) | [26016](https://solved.ac/problems/26016) | | **G** | Guessing Game | `gcpc/2022/guessinggame` | `gcpc/2022/problems.pdf` | [guessinggame4](https://open.kattis.com/problems/guessinggame4) | [26017](https://solved.ac/problems/26017) | | **H** | Hardcore Hangman | `gcpc/2022/hardcorehangman` | `gcpc/2022/problems.pdf` | [hardcorehangman](https://open.kattis.com/problems/hardcorehangman) | [26018](https://solved.ac/problems/26018) | | **I** | Improving IT | `gcpc/2022/improvingit` | `gcpc/2022/problems.pdf` | [improvingit](https://open.kattis.com/problems/improvingit) | [26019](https://solved.ac/problems/26019) | | **J** | Jesting Jabberwocky | `gcpc/2022/jestingjabberwocky` | `gcpc/2022/problems.pdf` | [jestingjabberwocky](https://open.kattis.com/problems/jestingjabberwocky) | [26020](https://solved.ac/problems/26020) | | **K** | K.O. Kids | `gcpc/2022/kokids` | `gcpc/2022/problems.pdf` | [kokids](https://open.kattis.com/problems/kokids) | [26021](https://solved.ac/problems/26021) | | **L** | Lots of Land | `gcpc/2022/lotsofland` | `gcpc/2022/problems.pdf` | [lotsofland](https://open.kattis.com/problems/lotsofland) | [26022](https://solved.ac/problems/26022) | | **M** | Mirror Madness | `gcpc/2022/mirrormadness` | `gcpc/2022/problems.pdf` | [mirrormadness](https://open.kattis.com/problems/mirrormadness) | [26023](https://solved.ac/problems/26023) | --- ## German Collegiate Programming Championship (2023) - **Contest Slug:** `gcpc` - **Year:** 2023 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/German%20Collegiate%20Programming%20Contest%20%28GCPC%29%202023) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/3625) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------------------------ | :---------------- | :------------------------- | :-------------------------------------------------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Adolescent Architecture 2 | `gcpc/2023/A` | `gcpc/2023/problemset.pdf` | [adolescentarchitecture2](https://open.kattis.com/problems/adolescentarchitecture2) | [28369](https://solved.ac/problems/28369) | | **B** | Balloon Darts | `gcpc/2023/B` | `gcpc/2023/problemset.pdf` | [balloondarts](https://open.kattis.com/problems/balloondarts) | [28370](https://solved.ac/problems/28370) | | **C** | Cosmic Commute | `gcpc/2023/C` | `gcpc/2023/problemset.pdf` | [cosmiccommute](https://open.kattis.com/problems/cosmiccommute) | [28371](https://solved.ac/problems/28371) | | **D** | DnD Dice | `gcpc/2023/D` | `gcpc/2023/problemset.pdf` | [dnddice](https://open.kattis.com/problems/dnddice) | [28372](https://solved.ac/problems/28372) | | **E** | Eszett | `gcpc/2023/E` | `gcpc/2023/problemset.pdf` | [eszett](https://open.kattis.com/problems/eszett) | [28373](https://solved.ac/problems/28373) | | **F** | Freestyle Masonry | `gcpc/2023/F` | `gcpc/2023/problemset.pdf` | [freestylemasonry](https://open.kattis.com/problems/freestylemasonry) | [28374](https://solved.ac/problems/28374) | | **G** | German Conference for Public Counting | `gcpc/2023/G` | `gcpc/2023/problemset.pdf` | [germanconferenceforpubliccounting](https://open.kattis.com/problems/germanconferenceforpubliccounting) | [28375](https://solved.ac/problems/28375) | | **H** | Highway Combinatorics | `gcpc/2023/H` | `gcpc/2023/problemset.pdf` | [highwaycombinatorics](https://open.kattis.com/problems/highwaycombinatorics) | [28376](https://solved.ac/problems/28376) | | **I** | Investigating Frog Behaviour on Lily Pad Patterns | `gcpc/2023/I` | `gcpc/2023/problemset.pdf` | [investigatingfrogbehaviouronlilypadpatterns](https://open.kattis.com/problems/investigatingfrogbehaviouronlilypadpatterns) | [28377](https://solved.ac/problems/28377) | | **J** | Japanese Lottery | `gcpc/2023/J` | `gcpc/2023/problemset.pdf` | [japaneselottery](https://open.kattis.com/problems/japaneselottery) | [28378](https://solved.ac/problems/28378) | | **K** | Kaldorian Knights | `gcpc/2023/K` | `gcpc/2023/problemset.pdf` | [kaldorianknights](https://open.kattis.com/problems/kaldorianknights) | [28379](https://solved.ac/problems/28379) | | **L** | Loop Invariant | `gcpc/2023/L` | `gcpc/2023/problemset.pdf` | [loopinvariant](https://open.kattis.com/problems/loopinvariant) | [28380](https://solved.ac/problems/28380) | | **M** | Mischievous Math | `gcpc/2023/M` | `gcpc/2023/problemset.pdf` | [mischievousmath](https://open.kattis.com/problems/mischievousmath) | [28381](https://solved.ac/problems/28381) | --- ## German Collegiate Programming Championship (2026) - **Contest Slug:** `gcpc` - **Year:** 2026 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/German%20Collegiate%20Programming%20Contest%20%28GCPC%29%202026) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------- | :---------------- | :---------------------- | :---------------------------------------------------------------------------: | :-------: | | **A** | Attracting Attendees | `gcpc/2026/A` | `gcpc/2026/contest.pdf` | [attractingattendees](https://open.kattis.com/problems/attractingattendees) | - | | **B** | Bye Bye Bilbo | `gcpc/2026/B` | `gcpc/2026/contest.pdf` | [byebyebilbo](https://open.kattis.com/problems/byebyebilbo) | - | | **C** | Crosses and Circles | `gcpc/2026/C` | `gcpc/2026/contest.pdf` | [crossesandcircles](https://open.kattis.com/problems/crossesandcircles) | - | | **D** | Delphi Danger | `gcpc/2026/D` | `gcpc/2026/contest.pdf` | [delphidanger](https://open.kattis.com/problems/delphidanger) | - | | **E** | Egocentric Expedition | `gcpc/2026/E` | `gcpc/2026/contest.pdf` | [egocentricexpedition](https://open.kattis.com/problems/egocentricexpedition) | - | | **F** | Fighting Fraud | `gcpc/2026/F` | `gcpc/2026/contest.pdf` | [fightingfraud](https://open.kattis.com/problems/fightingfraud) | - | | **G** | Garbled Garden | `gcpc/2026/G` | `gcpc/2026/contest.pdf` | [garbledgarden](https://open.kattis.com/problems/garbledgarden) | - | | **H** | Historical Hits | `gcpc/2026/H` | `gcpc/2026/contest.pdf` | [historicalhits](https://open.kattis.com/problems/historicalhits) | - | | **I** | Incremented Itinerary | `gcpc/2026/I` | `gcpc/2026/contest.pdf` | [incrementeditinerary](https://open.kattis.com/problems/incrementeditinerary) | - | | **J** | Junior Joining | `gcpc/2026/J` | `gcpc/2026/contest.pdf` | [juniorjoining](https://open.kattis.com/problems/juniorjoining) | - | | **K** | Keeping Cows | `gcpc/2026/K` | `gcpc/2026/contest.pdf` | [keepingcows](https://open.kattis.com/problems/keepingcows) | - | | **L** | Lyrical Leisure | `gcpc/2026/L` | `gcpc/2026/contest.pdf` | [lyricalleisure](https://open.kattis.com/problems/lyricalleisure) | - | | **M** | Mirror Magic | `gcpc/2026/M` | `gcpc/2026/contest.pdf` | [mirrormagic](https://open.kattis.com/problems/mirrormagic) | - | --- ## Greater New York Regional Contest (1999) - **Contest Slug:** `gnyr` - **Year:** 1999 --- ## Greater New York Regional Contest (2000) - **Contest Slug:** `gnyr` - **Year:** 2000 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/727) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------- | :------------------- | :-------------------------------- | :----: | :-------------------------------------: | | **A** | u Calculate e | `gnyr/2000/problems` | `gnyr/2000/problems/problema.pdf` | - | [6376](https://solved.ac/problems/6376) | | **B** | Problem Bee | `gnyr/2000/problems` | `gnyr/2000/problems/problemb.pdf` | - | [6377](https://solved.ac/problems/6377) | | **C** | Digital Roots | `gnyr/2000/problems` | `gnyr/2000/problems/problemc.pdf` | - | [6378](https://solved.ac/problems/6378) | | **D** | Scramble Sort | `gnyr/2000/problems` | `gnyr/2000/problems/problemd.pdf` | - | [6379](https://solved.ac/problems/6379) | | **E** | A Well-Formed Problem | `gnyr/2000/problems` | `gnyr/2000/problems/probleme.pdf` | - | [6380](https://solved.ac/problems/6380) | | **F** | Entropy | `gnyr/2000/problems` | `gnyr/2000/problems/problemf.pdf` | - | [6381](https://solved.ac/problems/6381) | | **G** | Credible Mazes | `gnyr/2000/problems` | `gnyr/2000/problems/problemg.pdf` | - | [6382](https://solved.ac/problems/6382) | | **H** | SPF | `gnyr/2000/problems` | `gnyr/2000/problems/problemh.pdf` | - | [6383](https://solved.ac/problems/6383) | --- ## Greater New York Regional Contest (2001) - **Contest Slug:** `gnyr` - **Year:** 2001 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/726) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------ | :---------------- | :---------------------------- | :----: | :-------------------------------------: | | **A** | Color Me Less | `gnyr/2001/a` | `gnyr/2001/colors/colors.pdf` | - | [6367](https://solved.ac/problems/6367) | | **B** | P,MTHBGWB | `gnyr/2001/b` | `gnyr/2001/morse/morse.pdf` | - | [6368](https://solved.ac/problems/6368) | | **C** | Plato's Blocks | `gnyr/2001/c` | `gnyr/2001/plato/plato.pdf` | - | [6369](https://solved.ac/problems/6369) | | **D** | Bode Plot | `gnyr/2001/d` | `gnyr/2001/bode/bode.pdf` | - | [6370](https://solved.ac/problems/6370) | | **E** | Follow My Logic | `gnyr/2001/e` | `gnyr/2001/logic/logic.pdf` | - | [6371](https://solved.ac/problems/6371) | | **F** | Microprocessor Simulation | `gnyr/2001/f` | `gnyr/2001/mach/mach.pdf` | - | [6372](https://solved.ac/problems/6372) | | **G** | Round and Round We Go | `gnyr/2001/g` | `gnyr/2001/cyclic/cyclic.pdf` | - | [6373](https://solved.ac/problems/6373) | | **H** | To The Max | `gnyr/2001/h` | `gnyr/2001/maxsum/maxsum.pdf` | - | [6374](https://solved.ac/problems/6374) | | **I** | Set Me | `gnyr/2001/i` | `gnyr/2001/set/set.pdf` | - | [6375](https://solved.ac/problems/6375) | --- ## Greater New York Regional Contest (2002) - **Contest Slug:** `gnyr` - **Year:** 2002 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/725) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------------------- | :------------------------ | :------------------------------------------ | :----: | :-------------------------------------: | | **A** | Four Quarters | `gnyr/2002/4Quarters` | `gnyr/2002/4Quarters/4Quarters.pdf` | - | [6358](https://solved.ac/problems/6358) | | **B** | The Drunk Jailer | `gnyr/2002/Jailer` | `gnyr/2002/Jailer/Jailer.pdf` | - | [6359](https://solved.ac/problems/6359) | | **C** | Lingo | `gnyr/2002/Lingo` | `gnyr/2002/Lingo/Lingo.pdf` | - | [6360](https://solved.ac/problems/6360) | | **D** | Number Base Conversion | `gnyr/2002/NumberBase` | `gnyr/2002/NumberBase/NumberBase.pdf` | - | [6361](https://solved.ac/problems/6361) | | **E** | Unimodal Palindromic Decompositions | `gnyr/2002/UPD` | `gnyr/2002/UPD/UPD.pdf` | - | [6362](https://solved.ac/problems/6362) | | **F** | Extended Lights Out | `gnyr/2002/LightsOut` | `gnyr/2002/LightsOut/LightsOut.pdf` | - | [6363](https://solved.ac/problems/6363) | | **G** | Dehuff | `gnyr/2002/Dehuff` | `gnyr/2002/Dehuff/Dehuff.pdf` | - | [6364](https://solved.ac/problems/6364) | | **H** | Picture Puzzle | `gnyr/2002/PicturePuzzle` | `gnyr/2002/PicturePuzzle/PicturePuzzle.pdf` | - | [6365](https://solved.ac/problems/6365) | | **I** | Strictly Inscribed Similar Triangles | `gnyr/2002/Inscribed` | `gnyr/2002/Inscribed/Inscribed.pdf` | - | [6366](https://solved.ac/problems/6366) | --- ## Greater New York Regional Contest (2003) - **Contest Slug:** `gnyr` - **Year:** 2003 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/13) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------------ | :---------------- | :--------------------- | :----: | :-------------------------------------: | | **A** | Biker's Trip Odometer | `gnyr/2003/a` | `gnyr/2003/a.pdf` | - | [2765](https://solved.ac/problems/2765) | | **B** | Candy Sharing Game | `gnyr/2003/b` | `gnyr/2003/b.pdf` | - | [2766](https://solved.ac/problems/2766) | | **C** | Peg Game | `gnyr/2003/c` | `gnyr/2003/c.pdf` | - | [2767](https://solved.ac/problems/2767) | | **D** | Taxation With Representation Overdone | `gnyr/2003/d` | `gnyr/2003/d.pdf` | - | [2768](https://solved.ac/problems/2768) | | **E** | It's Logical | `gnyr/2003/e` | `gnyr/2003/e.pdf` | - | [2769](https://solved.ac/problems/2769) | | **F** | Obstructed Rook Circuits | `gnyr/2003/f` | `gnyr/2003/f.pdf` | - | [2770](https://solved.ac/problems/2770) | | **G** | Rhyme Schemes | `gnyr/2003/g` | `gnyr/2003/g.pdf` | - | [2771](https://solved.ac/problems/2771) | | **H** | Fully Diversified Sequences of Sets | `gnyr/2003/h` | `gnyr/2003/h.pdf` | - | [2772](https://solved.ac/problems/2772) | | **I** | Exocenter of a Triangle | `gnyr/2003/i` | `gnyr/2003/i.pdf` | - | [2773](https://solved.ac/problems/2773) | --- ## Greater New York Regional Contest (2004) - **Contest Slug:** `gnyr` - **Year:** 2004 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/12) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------- | :------------------------ | :--------------------- | :----: | :-------------------------------------: | | **A** | Bullseye | `gnyr/2004/A_BullsEye` | `gnyr/2004/a.pdf` | - | [2756](https://solved.ac/problems/2756) | | **B** | An Excel-lent Problem | `gnyr/2004/B_Excellent` | `gnyr/2004/b.pdf` | - | [2757](https://solved.ac/problems/2757) | | **C** | Lenny's Lucky Lotto Lists | `gnyr/2004/C_Lotto` | `gnyr/2004/c.pdf` | - | [2758](https://solved.ac/problems/2758) | | **D** | Flipping Pancake | `gnyr/2004/D_Pancake` | `gnyr/2004/d.pdf` | - | [2759](https://solved.ac/problems/2759) | | **E** | Card Trick | `gnyr/2004/E_Cardtrick` | `gnyr/2004/e.pdf` | - | [2760](https://solved.ac/problems/2760) | | **F** | Model Rocket Height | `gnyr/2004/F_ModelRocket` | `gnyr/2004/f.pdf` | - | [2761](https://solved.ac/problems/2761) | | **G** | Region Filling | `gnyr/2004/G_RegionFill` | `gnyr/2004/g.pdf` | - | [2762](https://solved.ac/problems/2762) | | **H** | Histology Assistant | `gnyr/2004/H_Histology` | `gnyr/2004/h.pdf` | - | [2763](https://solved.ac/problems/2763) | | **I** | Mr. Young's Picture Permutations | `gnyr/2004/I_MrYoung` | `gnyr/2004/i.pdf` | - | [2764](https://solved.ac/problems/2764) | --- ## Greater New York Regional Contest (2005) - **Contest Slug:** `gnyr` - **Year:** 2005 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/11) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :---------------- | :--------------------- | :----: | :-------------------------------------: | | **A** | 01000001 | `gnyr/2005/a` | `gnyr/2005/a.pdf` | - | [2729](https://solved.ac/problems/2729) | | **B** | Bank of Kalii | `gnyr/2005/b` | `gnyr/2005/b.pdf` | - | [2730](https://solved.ac/problems/2730) | | **C** | Cubic End | `gnyr/2005/c` | `gnyr/2005/c.pdf` | - | [2731](https://solved.ac/problems/2731) | | **D** | Kindergarten Graduation | `gnyr/2005/d` | `gnyr/2005/d.pdf` | - | [2732](https://solved.ac/problems/2732) | | **E** | brainf*ck | `gnyr/2005/e` | `gnyr/2005/e.pdf` | - | [2733](https://solved.ac/problems/2733) | | **F** | Stacking Cylinders | `gnyr/2005/f` | `gnyr/2005/f.pdf` | - | [2734](https://solved.ac/problems/2734) | | **G** | No Fold'Em Hold'Em | `gnyr/2005/g` | `gnyr/2005/g.pdf` | - | [2735](https://solved.ac/problems/2735) | | **H** | Model Rocket Height | `gnyr/2005/h` | `gnyr/2005/h.pdf` | - | [2736](https://solved.ac/problems/2736) | | **I** | Sequence Sum Possibilities | `gnyr/2005/i` | `gnyr/2005/i.pdf` | - | [2737](https://solved.ac/problems/2737) | --- ## Greater New York Regional Contest (2006) - **Contest Slug:** `gnyr` - **Year:** 2006 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/10) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------------- | :---------------- | :--------------------- | :----: | :-------------------------------------: | | **A** | Quick Change | `gnyr/2006/a` | `gnyr/2006/a.pdf` | - | [2720](https://solved.ac/problems/2720) | | **B** | Triangular Sums | `gnyr/2006/b` | `gnyr/2006/b.pdf` | - | [2721](https://solved.ac/problems/2721) | | **C** | Shuffle'm Up | `gnyr/2006/c` | `gnyr/2006/c.pdf` | - | [2722](https://solved.ac/problems/2722) | | **D** | Push Button Lock | `gnyr/2006/d` | `gnyr/2006/d.pdf` | - | [2723](https://solved.ac/problems/2723) | | **E** | Sign Message Formatting | `gnyr/2006/e` | `gnyr/2006/e.pdf` | - | [2724](https://solved.ac/problems/2724) | | **F** | Visible Lattice Points | `gnyr/2006/f` | `gnyr/2006/f.pdf` | - | [2725](https://solved.ac/problems/2725) | | **G** | Triangular N-Queens Problem | `gnyr/2006/g` | `gnyr/2006/g.pdf` | - | [2726](https://solved.ac/problems/2726) | | **H** | Non-divisible 2-3 Power Sums | `gnyr/2006/h` | `gnyr/2006/h.pdf` | - | [2727](https://solved.ac/problems/2727) | | **I** | Margaritas on the River Walk | `gnyr/2006/i` | `gnyr/2006/i.pdf` | - | [2728](https://solved.ac/problems/2728) | --- ## Greater New York Regional Contest (2007) - **Contest Slug:** `gnyr` - **Year:** 2007 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/9) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------- | :---------------- | :--------------------- | :----: | :-------------------------------------: | | **A** | Mispelling | `gnyr/2007/a` | `gnyr/2007/a.pdf` | - | [2711](https://solved.ac/problems/2711) | | **B** | Conversions | `gnyr/2007/b` | `gnyr/2007/b.pdf` | - | [2712](https://solved.ac/problems/2712) | | **C** | Encoding | `gnyr/2007/c` | `gnyr/2007/c.pdf` | - | [2713](https://solved.ac/problems/2713) | | **D** | Decoding | `gnyr/2007/d` | `gnyr/2007/d.pdf` | - | [2714](https://solved.ac/problems/2714) | | **E** | Flipping Burned Pancakes | `gnyr/2007/e` | `gnyr/2007/e.pdf` | - | [2715](https://solved.ac/problems/2715) | | **F** | Monkey Vines | `gnyr/2007/f` | `gnyr/2007/f.pdf` | - | [2716](https://solved.ac/problems/2716) | | **G** | Model Rocket Height | `gnyr/2007/g` | `gnyr/2007/g.pdf` | - | [2717](https://solved.ac/problems/2717) | | **H** | Tiling a Grid With Dominoes | `gnyr/2007/h` | `gnyr/2007/h.pdf` | - | [2718](https://solved.ac/problems/2718) | | **I** | Spatial Concepts Test | `gnyr/2007/i` | `gnyr/2007/i.pdf` | - | [2719](https://solved.ac/problems/2719) | --- ## Greater New York Regional Contest (2008) - **Contest Slug:** `gnyr` - **Year:** 2008 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/8) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------------------- | :---------------- | :--------------------- | :----: | :-------------------------------------: | | **A** | Sixth Grade Math | `gnyr/2008/a` | `gnyr/2008/a.pdf` | - | [2702](https://solved.ac/problems/2702) | | **B** | Cryptoquote | `gnyr/2008/b` | `gnyr/2008/b.pdf` | - | [2703](https://solved.ac/problems/2703) | | **C** | Binary Clock | `gnyr/2008/c` | `gnyr/2008/c.pdf` | - | [2704](https://solved.ac/problems/2704) | | **D** | Recursively Palindromic Partitions | `gnyr/2008/d` | `gnyr/2008/d.pdf` | - | [2705](https://solved.ac/problems/2705) | | **E** | Text Messaging Improvement | `gnyr/2008/e` | `gnyr/2008/e.pdf` | - | [2706](https://solved.ac/problems/2706) | | **F** | Extended Normal Order Sort | `gnyr/2008/f` | `gnyr/2008/f.pdf` | - | [2707](https://solved.ac/problems/2707) | | **G** | Area of Polycubes | `gnyr/2008/g` | `gnyr/2008/g.pdf` | - | [2708](https://solved.ac/problems/2708) | | **H** | Two Note Rag | `gnyr/2008/h` | `gnyr/2008/h.pdf` | - | [2709](https://solved.ac/problems/2709) | | **I** | Joe's Triangular Gardens | `gnyr/2008/i` | `gnyr/2008/i.pdf` | - | [2710](https://solved.ac/problems/2710) | --- ## Greater New York Regional Contest (2009) - **Contest Slug:** `gnyr` - **Year:** 2009 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/7) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------------------- | :---------------- | :--------------------- | :----: | :-------------------------------------: | | **A** | Nth Largest Value | `gnyr/2009/a` | `gnyr/2009/a.pdf` | - | [2693](https://solved.ac/problems/2693) | | **B** | Equal Sum Partitions | `gnyr/2009/b` | `gnyr/2009/b.pdf` | - | [2694](https://solved.ac/problems/2694) | | **C** | Balls | `gnyr/2009/c` | `gnyr/2009/c.pdf` | - | [2695](https://solved.ac/problems/2695) | | **D** | Running Median | `gnyr/2009/d` | `gnyr/2009/d.pdf` | - | [2696](https://solved.ac/problems/2696) | | **E** | The Next Permutation | `gnyr/2009/e` | `gnyr/2009/e.pdf` | - | [2697](https://solved.ac/problems/2697) | | **F** | Adjacent Bit Counts | `gnyr/2009/f` | `gnyr/2009/f.pdf` | - | [2698](https://solved.ac/problems/2698) | | **G** | Convex Hull of Lattice Points | `gnyr/2009/g` | `gnyr/2009/g.pdf` | - | [2699](https://solved.ac/problems/2699) | | **H** | Interior Points of Lattice Polygons | `gnyr/2009/h` | `gnyr/2009/h.pdf` | - | [2700](https://solved.ac/problems/2700) | | **I** | Theta Puzzle | `gnyr/2009/i` | `gnyr/2009/i.pdf` | - | [2701](https://solved.ac/problems/2701) | --- ## Greater New York Regional Contest (2010) - **Contest Slug:** `gnyr` - **Year:** 2010 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/6) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------------------- | :---------------- | :--------------------- | :----: | :-------------------------------------: | | **A** | Penney Game | `gnyr/2010/a` | `gnyr/2010/a.pdf` | - | [2684](https://solved.ac/problems/2684) | | **B** | Nim-B Sum | `gnyr/2010/b` | `gnyr/2010/b.pdf` | - | [2685](https://solved.ac/problems/2685) | | **C** | Just The Simple Fax | `gnyr/2010/c` | `gnyr/2010/c.pdf` | - | [2686](https://solved.ac/problems/2686) | | **D** | Show Me The Fax | `gnyr/2010/d` | `gnyr/2010/d.pdf` | - | [2687](https://solved.ac/problems/2687) | | **E** | Non-Decreasing Digits | `gnyr/2010/e` | `gnyr/2010/e.pdf` | - | [2688](https://solved.ac/problems/2688) | | **F** | I2C | `gnyr/2010/f` | `gnyr/2010/f.pdf` | - | [2689](https://solved.ac/problems/2689) | | **G** | Old Faſhioned Typeſetting | `gnyr/2010/g` | `gnyr/2010/g.pdf` | - | [2690](https://solved.ac/problems/2690) | | **H** | Scanning UPC Barcodes | `gnyr/2010/h` | `gnyr/2010/h.pdf` | - | [2691](https://solved.ac/problems/2691) | | **I** | Cutting The Cake | `gnyr/2010/i` | `gnyr/2010/i.pdf` | - | [2692](https://solved.ac/problems/2692) | --- ## Greater New York Regional Contest (2011) - **Contest Slug:** `gnyr` - **Year:** 2011 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/5) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------ | :---------------- | :--------------------- | :----: | :-------------------------------------: | | **A** | Repeating Characters | `gnyr/2011/a` | `gnyr/2011/a.pdf` | - | [2675](https://solved.ac/problems/2675) | | **B** | The Rascal Triangle | `gnyr/2011/b` | `gnyr/2011/b.pdf` | - | [2676](https://solved.ac/problems/2676) | | **C** | Programming The EDSAC | `gnyr/2011/c` | `gnyr/2011/c.pdf` | - | [2677](https://solved.ac/problems/2677) | | **D** | Decoding EDSAC Data | `gnyr/2011/d` | `gnyr/2011/d.pdf` | - | [2678](https://solved.ac/problems/2678) | | **E** | Route Redundancy | `gnyr/2011/e` | `gnyr/2011/e.pdf` | - | [2679](https://solved.ac/problems/2679) | | **F** | QR | `gnyr/2011/f` | `gnyr/2011/f.pdf` | - | [2680](https://solved.ac/problems/2680) | | **G** | Rancher's Gift | `gnyr/2011/g` | `gnyr/2011/g.pdf` | - | [2681](https://solved.ac/problems/2681) | | **H** | Maximum in the Cycle of 1 | `gnyr/2011/h` | `gnyr/2011/h.pdf` | - | [2682](https://solved.ac/problems/2682) | | **I** | The Golden Ceiling | `gnyr/2011/i` | `gnyr/2011/i.pdf` | - | [2683](https://solved.ac/problems/2683) | --- ## Greater New York Regional Contest (2012) - **Contest Slug:** `gnyr` - **Year:** 2012 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------- | :------------------------ | :--------------------- | :----: | :-------------------------------------: | | **A** | Hailstone HOTPO | `gnyr/2012/a-hailstone` | `gnyr/2012/a.pdf` | - | [3943](https://solved.ac/problems/3943) | | **B** | Casting | `gnyr/2012/b-bcast` | `gnyr/2012/b.pdf` | - | [3944](https://solved.ac/problems/3944) | | **C** | Pen Counts | `gnyr/2012/c-pencount` | `gnyr/2012/c.pdf` | - | [3945](https://solved.ac/problems/3945) | | **D** | Maximum Random Walk | `gnyr/2012/d-maxwalk` | `gnyr/2012/d.pdf` | - | [3946](https://solved.ac/problems/3946) | | **E** | Faulhaber's Triangle | `gnyr/2012/e-faulhaber` | `gnyr/2012/e.pdf` | - | [3947](https://solved.ac/problems/3947) | | **F** | The King's Ups and Downs | `gnyr/2012/f-kingsguards` | `gnyr/2012/f.pdf` | - | [3948](https://solved.ac/problems/3948) | | **G** | Mad Veterinarian | `gnyr/2012/g-madvet` | `gnyr/2012/g.pdf` | - | [3949](https://solved.ac/problems/3949) | | **H** | Windmill Animation | `gnyr/2012/h-windmill` | `gnyr/2012/h.pdf` | - | [3950](https://solved.ac/problems/3950) | | **I** | Push-To Telescope | `gnyr/2012/i-pushto` | `gnyr/2012/i.pdf` | - | [3951](https://solved.ac/problems/3951) | | **X** | Mystery | `gnyr/2012/x-mystery` | `gnyr/2012/x.pdf` | - | [3952](https://solved.ac/problems/3952) | --- ## Greater New York Regional Contest (2013) - **Contest Slug:** `gnyr` - **Year:** 2013 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1170) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------------------------- | :------------------------- | :--------------------- | :----: | :-------------------------------------: | | **A** | Islands in the Data Stream | `gnyr/2013/A-Islands` | `gnyr/2013/a.pdf` | - | [9468](https://solved.ac/problems/9468) | | **B** | Von Neumann's Fly | `gnyr/2013/B-VonNeumann` | `gnyr/2013/b.pdf` | - | [9469](https://solved.ac/problems/9469) | | **C** | Strahler Order | `gnyr/2013/C-Strahler` | `gnyr/2013/c.pdf` | - | [9470](https://solved.ac/problems/9470) | | **D** | Pisano Periods | `gnyr/2013/D-Pisano` | `gnyr/2013/d.pdf` | - | [9471](https://solved.ac/problems/9471) | | **E** | Deranged Exams | `gnyr/2013/E-Deranged` | `gnyr/2013/e.pdf` | - | [9472](https://solved.ac/problems/9472) | | **F** | Chomp | `gnyr/2013/F-Chomp` | `gnyr/2013/f.pdf` | - | [9473](https://solved.ac/problems/9473) | | **G** | Triangle Count Sequences of Polygon Triangulations | `gnyr/2013/G-Triangulate` | `gnyr/2013/g.pdf` | - | [9474](https://solved.ac/problems/9474) | | **H** | Powers of Pascal | `gnyr/2013/H-PascalPowers` | `gnyr/2013/h.pdf` | - | [9475](https://solved.ac/problems/9475) | | **I** | Contraband | `gnyr/2013/I-Contraband` | `gnyr/2013/i.pdf` | - | [9476](https://solved.ac/problems/9476) | --- ## Greater New York Regional Contest (2014) - **Contest Slug:** `gnyr` - **Year:** 2014 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2014%20Greater%20New%20York%20Region%20ACM%20Regional%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1301) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------- | :------------------------------------- | :-------------------------------------------------------------------- | :---------------------------------------------------------------------: | :---------------------------------------: | | **A** | Height Ordering | `gnyr/2014/a-heightorder` | `gnyr/2014/a.pdf` | [height](https://open.kattis.com/problems/height) | [10431](https://solved.ac/problems/10431) | | **B** | Islands in the Data Stream | `gnyr/2014/b-islandsindatastream` | `gnyr/2014/b-islandsindatastream/b-islandsindatastream.pdf` | [islands](https://open.kattis.com/problems/islands) | [10432](https://solved.ac/problems/10432) | | **C** | Floating-Point Format Conversion | `gnyr/2014/c-floatingpointconversion` | `gnyr/2014/c.pdf` | [conversion](https://open.kattis.com/problems/conversion) | [10433](https://solved.ac/problems/10433) | | **D** | Happy Happy Prime Prime | `gnyr/2014/d-happyhappyprimeprime` | `gnyr/2014/d-happyhappyprimeprime/d-happyhappyprimeprime.pdf` | [happyprime](https://open.kattis.com/problems/happyprime) | [10434](https://solved.ac/problems/10434) | | **E** | Mancala | `gnyr/2014/e-mancala` | `gnyr/2014/e-mancala/e-mancala.pdf` | [mancala](https://open.kattis.com/problems/mancala) | [10435](https://solved.ac/problems/10435) | | **F** | A Rational Sequence | `gnyr/2014/f-arationalsequence` | `gnyr/2014/f-arationalsequence/f-arationalsequence.pdf` | [rationalsequence](https://open.kattis.com/problems/rationalsequence) | [10436](https://solved.ac/problems/10436) | | **G** | Growing Rectangular Spiral | `gnyr/2014/g-growingrectangularspiral` | `gnyr/2014/g-growingrectangularspiral/g-growingrectangularspiral.pdf` | [rectangularspiral](https://open.kattis.com/problems/rectangularspiral) | [10437](https://solved.ac/problems/10437) | | **H** | Farey Sums | `gnyr/2014/h-fareysum` | `gnyr/2014/h-fareysum/h-fareysum.pdf` | [fareysums](https://open.kattis.com/problems/fareysums) | [10438](https://solved.ac/problems/10438) | | **I** | The Queen's Super-circular Patio | `gnyr/2014/i-queenspatio` | `gnyr/2014/i-queenspatio/i-queenspatio.pdf` | [queenspatio](https://open.kattis.com/problems/queenspatio) | [10439](https://solved.ac/problems/10439) | --- ## Greater New York Regional Contest (2015) - **Contest Slug:** `gnyr` - **Year:** 2015 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2015%20Greater%20New%20York%20Region%20ACM%20Regional%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1416) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------ | :------------------------------ | :------------------------------------------------------ | :---------------------------------------------------------------------: | :---------------------------------------: | | **A** | Sum Kind Of Problem | `gnyr/2015/A-SumKindOfProblem` | `gnyr/2015/A-SumKindOfProblem/A-SumKindOfProblem.pdf` | [sumkindofproblem](https://open.kattis.com/problems/sumkindofproblem) | [11522](https://solved.ac/problems/11522) | | **B** | Run Step | `gnyr/2015/B-RunStep` | `gnyr/2015/B-RunStep/B-RunStep.pdf` | [runningsteps](https://open.kattis.com/problems/runningsteps) | [11523](https://solved.ac/problems/11523) | | **C** | Immortal Porpoises | `gnyr/2015/C-ImmortalPorpoises` | `gnyr/2015/C-ImmortalPorpoises/C-ImmortalPorpoises.pdf` | [porpoises](https://open.kattis.com/problems/porpoises) | [11524](https://solved.ac/problems/11524) | | **D** | Farey | `gnyr/2015/D-Farey` | `gnyr/2015/D-Farey/D-Farey.pdf` | [farey](https://open.kattis.com/problems/farey) | [11525](https://solved.ac/problems/11525) | | **E** | A Rational Sequence | `gnyr/2015/E-RationalSequenceB` | `gnyr/2015/E-RationalSequenceB/E-RationalSequenceB.pdf` | [rationalsequence2](https://open.kattis.com/problems/rationalsequence2) | [11526](https://solved.ac/problems/11526) | | **F** | Robots | `gnyr/2015/F-Robots` | `gnyr/2015/F-Robots/F-Robots.pdf` | [robots](https://open.kattis.com/problems/robots) | [11527](https://solved.ac/problems/11527) | | **G** | Composition | `gnyr/2015/G-Composition` | `gnyr/2015/G-Composition/G-Composition.pdf` | [compositions](https://open.kattis.com/problems/compositions) | [11528](https://solved.ac/problems/11528) | | **H** | Brocard | `gnyr/2015/H-Brocard` | `gnyr/2015/H-Brocard/H-Brocard.pdf` | [brocard](https://open.kattis.com/problems/brocard) | [11529](https://solved.ac/problems/11529) | | **I** | RATS | `gnyr/2015/I-RATS` | `gnyr/2015/I-RATS/I-RATS.pdf` | [rats](https://open.kattis.com/problems/rats) | [11530](https://solved.ac/problems/11530) | --- ## Greater New York Regional Contest (2016) - **Contest Slug:** `gnyr` - **Year:** 2016 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2016%20Greater%20New%20York%20Region%20ACM%20Regional%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1573) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------------- | :----------------------------- | :------------------------------------------ | :----: | :---------------------------------------: | | **A** | Which Base is it Anyway? | `gnyr/2016/A-Bases` | `gnyr/2016/problems/A-Bases.pdf` | - | [13877](https://solved.ac/problems/13877) | | **B** | FBI Universal Control Numbers | `gnyr/2016/B-FBI` | `gnyr/2016/problems/B-FBI.pdf` | - | [13878](https://solved.ac/problems/13878) | | **C** | ary Partitions | `gnyr/2016/C-M-ary` | `gnyr/2016/problems/C-M-ary.pdf` | - | [13879](https://solved.ac/problems/13879) | | **D** | A Rational Sequence (Take 3) | `gnyr/2016/D-RationalSequence` | `gnyr/2016/problems/D-RationalSequence.pdf` | - | [13880](https://solved.ac/problems/13880) | | **E** | Permutation Descent Counts | `gnyr/2016/E-Descent` | `gnyr/2016/problems/E-Descent.pdf` | - | [13881](https://solved.ac/problems/13881) | | **F** | Tight-Fit Sudoku | `gnyr/2016/F-TFS` | `gnyr/2016/problems/F-TFS.pdf` | - | [13882](https://solved.ac/problems/13882) | | **G** | Magical Mystery Knight's Tour | `gnyr/2016/G-Knight` | `gnyr/2016/problems/G-Knight.pdf` | - | [13883](https://solved.ac/problems/13883) | | **H** | DA-Sort | `gnyr/2016/H-DASort` | `gnyr/2016/problems/H-DASort.pdf` | - | [13884](https://solved.ac/problems/13884) | | **I** | A Mazing! | `gnyr/2016/I-AMazing` | `gnyr/2016/problems/I-AMazing.pdf` | - | [13885](https://solved.ac/problems/13885) | | **J** | Smoothed Gardens | `gnyr/2016/J-Gardens` | `gnyr/2016/problems/J-Gardens.pdf` | - | [13886](https://solved.ac/problems/13886) | --- ## Greater New York Regional Contest (2017) - **Contest Slug:** `gnyr` - **Year:** 2017 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2017%20Greater%20New%20York%20Region%20ACM%20Regional%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1813) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------- | :-------------------------------------- | :---------------------------------------------------------------------- | :-------------------------------------------------------------------: | :---------------------------------------: | | **A** | Chanukah Challenge | `gnyr/2017/A-Chanukah` | `gnyr/2017/A-Chanukah/A-Chanukah.pdf` | [chanukah](https://open.kattis.com/problems/chanukah) | [15295](https://solved.ac/problems/15295) | | **B** | Sum Squared Digits Function | `gnyr/2017/B-SumSquareDigits` | `gnyr/2017/B-SumSquareDigits/B-SumSquareDigits.pdf` | [sumsquareddigits](https://open.kattis.com/problems/sumsquareddigits) | [15296](https://solved.ac/problems/15296) | | **C** | Capsules | `gnyr/2017/C-Capsules` | `gnyr/2017/C-Capsules/Capsules.pdf` | [capsules](https://open.kattis.com/problems/capsules) | [15297](https://solved.ac/problems/15297) | | **D** | Pavers | `gnyr/2017/D-Pavers` | `gnyr/2017/D-Pavers/D-Pavers.pdf` | [pavers](https://open.kattis.com/problems/pavers) | [15298](https://solved.ac/problems/15298) | | **E** | Best Rational Approximation | `gnyr/2017/E-BestRationalApproximation` | `gnyr/2017/E-BestRationalApproximation/E-BestRationalApproximation.pdf` | [bestrational](https://open.kattis.com/problems/bestrational) | [15299](https://solved.ac/problems/15299) | | **F** | The Components Game | `gnyr/2017/F-Components Game` | `gnyr/2017/F-Components Game/F-Components.pdf` | [componentsgame](https://open.kattis.com/problems/componentsgame) | [15300](https://solved.ac/problems/15300) | | **G** | Social Resistance | `gnyr/2017/G-SocialDist` | `gnyr/2017/G-SocialDist/G-SocialDist.pdf` | [socialresistance](https://open.kattis.com/problems/socialresistance) | [15301](https://solved.ac/problems/15301) | | **H** | Triangle to Hexagon | `gnyr/2017/H-TriHex` | `gnyr/2017/H-TriHex/H-TriHex.pdf` | [triangle2hexagon](https://open.kattis.com/problems/triangle2hexagon) | [15302](https://solved.ac/problems/15302) | | **I** | Sumdoku | `gnyr/2017/I-Sumdoku` | `gnyr/2017/I-Sumdoku/I-SUMDOKU.pdf` | [sumdoku](https://open.kattis.com/problems/sumdoku) | [15303](https://solved.ac/problems/15303) | | **J** | Toys | `gnyr/2017/J-Toys` | `gnyr/2017/J-Toys/J-Toys.pdf` | [littletoys](https://open.kattis.com/problems/littletoys) | [15304](https://solved.ac/problems/15304) | --- ## Greater New York Regional Contest (2018) - **Contest Slug:** `gnyr` - **Year:** 2018 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1960) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------- | :----------------------------- | :---------------------------------------------------- | :----: | :---------------------------------------: | | **A** | Potato Sacks | `gnyr/2018/A-PotatoSacks` | `gnyr/2018/A-PotatoSacks/A-PotatoSacks.pdf` | - | [16551](https://solved.ac/problems/16551) | | **B** | Moving Buildings | `gnyr/2018/B-MoveBuildings` | `gnyr/2018/B-MoveBuildings/B-MoveBuildings.pdf` | - | [16552](https://solved.ac/problems/16552) | | **C** | Hedwig's Ladder | `gnyr/2018/C-hed_ladder` | `gnyr/2018/C-hed_ladder/C-hed_ladder.pdf` | - | [16553](https://solved.ac/problems/16553) | | **D** | Tanks and Pipes | `gnyr/2018/D-Pipesq` | `gnyr/2018/D-Pipesq/D-Pipesq.pdf` | - | [16554](https://solved.ac/problems/16554) | | **E** | What time is it anyway? | `gnyr/2018/E-WhatTime` | `gnyr/2018/E-WhatTime/E-WhatTime.pdf` | - | [16555](https://solved.ac/problems/16555) | | **F** | Left-Right-Win | `gnyr/2018/F-LeftRightWin` | `gnyr/2018/F-LeftRightWin/F-LeftRightWin.pdf` | - | [16556](https://solved.ac/problems/16556) | | **G** | The Erdös-Straus Conjecture | `gnyr/2018/G-EStraus` | `gnyr/2018/G-EStraus/G-EStraus.pdf` | - | [16557](https://solved.ac/problems/16557) | | **H** | Subprime Fibonacci Sequence | `gnyr/2018/H-SubPrimeSequence` | `gnyr/2018/H-SubPrimeSequence/H-SubPrimeSequence.pdf` | - | [16558](https://solved.ac/problems/16558) | | **I** | Airspace Regulations | `gnyr/2018/I-AirRegs` | `gnyr/2018/I-AirRegs/I-AirRegs.pdf` | - | [16559](https://solved.ac/problems/16559) | | **J** | Pinemi Puzzles | `gnyr/2018/J-Pinemi` | `gnyr/2018/J-Pinemi/J-Pinemi.pdf` | - | [16560](https://solved.ac/problems/16560) | --- ## Greater New York Regional Contest (2020) - **Contest Slug:** `gnyr` - **Year:** 2020 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2484) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------- | :----------------------------------- | :-------------------------------------------------------------- | :----: | :---------------------------------------: | | **A** | Bottle Return | `gnyr/2020/A-BottleReturn` | `gnyr/2020/A-BottleReturn/BottleReturn.pdf` | - | [21300](https://solved.ac/problems/21300) | | **B** | Comfy Deviations | `gnyr/2020/B-ComfyDeviations` | `gnyr/2020/B-ComfyDeviations/Deviations.pdf` | - | [21301](https://solved.ac/problems/21301) | | **C** | Arthur's Table | `gnyr/2020/C-ArthursTable` | `gnyr/2020/C-ArthursTable/Table.pdf` | - | [21302](https://solved.ac/problems/21302) | | **D** | Magic Drone | `gnyr/2020/D-Magic Drone` | `gnyr/2020/D-Magic Drone/MagicDrone.pdf` | - | [21303](https://solved.ac/problems/21303) | | **E** | Marbles | `gnyr/2020/E-Marbles` | `gnyr/2020/E-Marbles/Marbles.pdf` | - | [21304](https://solved.ac/problems/21304) | | **F** | Chocolate Bar Game | `gnyr/2020/F-ChocolateBarGame` | `gnyr/2020/F-ChocolateBarGame/ChocolateBarGame.pdf` | - | [21305](https://solved.ac/problems/21305) | | **G** | Three Triangles | `gnyr/2020/G-ThreeTriangles` | `gnyr/2020/G-ThreeTriangles/ThreeTriangles.pdf` | - | [21306](https://solved.ac/problems/21306) | | **H** | teams. | `gnyr/2020/H-ICPC Standings` | `gnyr/2020/H-ICPC Standings/ICPCStandings.pdf` | - | [21307](https://solved.ac/problems/21307) | | **I** | Ternary Machine | `gnyr/2020/I-Ternary Machine` | `gnyr/2020/I-Ternary Machine/TernaryMachine.pdf` | - | [21308](https://solved.ac/problems/21308) | | **J** | Cardinal Adjacencies | `gnyr/2020/J-CardinalAdjacencies` | `gnyr/2020/J-CardinalAdjacencies/CardinalAdj.pdf` | - | [21309](https://solved.ac/problems/21309) | | **K** | Stern's Sequence | `gnyr/2020/K-SternSeq` | `gnyr/2020/K-SternSeq/SternSequence.pdf` | - | [21310](https://solved.ac/problems/21310) | | **L** | Evenly Separated Strings | `gnyr/2020/L-EvenlySeparatedStrings` | `gnyr/2020/L-EvenlySeparatedStrings/EvenlySeparatedStrings.pdf` | - | [21311](https://solved.ac/problems/21311) | --- ## Greater New York Regional Contest (2021) - **Contest Slug:** `gnyr` - **Year:** 2021 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/3059) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------------------- | :---------------------------------- | :-------------------------------------------------------------- | :----: | :---------------------------------------: | | **A** | Football Scoring | `gnyr/2021/A-FootballScoring` | `gnyr/2021/A-FootballScoring/A-FootballScoring.pdf` | - | [24736](https://solved.ac/problems/24736) | | **B** | Tri-Color Puzzle | `gnyr/2021/B-TriColorHexPuzzle` | `gnyr/2021/B-TriColorHexPuzzle/B-TriColorHexPuzzle.pdf` | - | [24737](https://solved.ac/problems/24737) | | **C** | Checker Slide | `gnyr/2021/C-CheckerSlide` | `gnyr/2021/C-CheckerSlide/C-CheckerSlide.pdf` | - | [24738](https://solved.ac/problems/24738) | | **D** | Sequinary Numerals | `gnyr/2021/D-Sequinary` | `gnyr/2021/D-Sequinary/D-Sequinary.pdf` | - | [24739](https://solved.ac/problems/24739) | | **E** | How Many Unicycles in a Broken Wheel | `gnyr/2021/E-Unicycle2` | `gnyr/2021/E-Unicycle2/E-Unicycle2.pdf` | - | [24740](https://solved.ac/problems/24740) | | **F** | Spider-Fly | `gnyr/2021/F-Spider-Fly` | `gnyr/2021/F-Spider-Fly/F-Spider-Fly.pdf` | - | [24741](https://solved.ac/problems/24741) | | **G** | Simple Collatz Sequence | `gnyr/2021/G-CollatzCount` | `gnyr/2021/G-CollatzCount/G-CollatzCount.pdf` | - | [24742](https://solved.ac/problems/24742) | | **H** | CIDR | `gnyr/2021/H-CIDR` | `gnyr/2021/H-CIDR/H-CIDR.pdf` | - | [24743](https://solved.ac/problems/24743) | | **I** | Three Spheres and a Tetrahedron | `gnyr/2021/I-Tetrasphere` | `gnyr/2021/I-Tetrasphere/I-Tetrasphere.pdf` | - | [24744](https://solved.ac/problems/24744) | | **J** | Morse Code Palindromes | `gnyr/2021/J-MorseCode` | `gnyr/2021/J-MorseCode/J-MorseCode.pdf` | - | [24745](https://solved.ac/problems/24745) | | **K** | Pooling PCR Tests | `gnyr/2021/K-PoolingPCRTests` | `gnyr/2021/K-PoolingPCRTests/K-PoolingPCRTests.pdf` | - | [24746](https://solved.ac/problems/24746) | | **L** | Letterle | `gnyr/2021/L-Letterle` | `gnyr/2021/L-Letterle/L-Letterle.pdf` | - | [24747](https://solved.ac/problems/24747) | | **M** | 7 Segments You Say? | `gnyr/2021/M-SevenSegment` | `gnyr/2021/M-SevenSegment/M-SevenSegment.pdf` | - | [24748](https://solved.ac/problems/24748) | | **N** | Neighbors | `gnyr/2021/N-Neighbors` | `gnyr/2021/N-Neighbors/N-Neighbors.pdf` | - | [24749](https://solved.ac/problems/24749) | | **O** | Transporting Spaghetti | `gnyr/2021/O-TransportingSpaghetti` | `gnyr/2021/O-TransportingSpaghetti/O-TransportingSpaghetti.pdf` | - | [24750](https://solved.ac/problems/24750) | --- ## Greater New York Regional Contest (2022) - **Contest Slug:** `gnyr` - **Year:** 2022 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2022%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2025%2C%202023%29) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/3555) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------------- | :------------------------------------- | :----------------------------------------------------------- | :----: | :---------------------------------------: | | **A** | Cornhole | `gnyr/2022/problems/A-Cornhole` | `gnyr/2022/problems/A-Cornhole/A-Cornhole.pdf` | - | [27855](https://solved.ac/problems/27855) | | **B** | Sum of Remainders | `gnyr/2022/problems/B-SumOfRemainders` | `gnyr/2022/problems/B-SumOfRemainders/B-SumOfRemainders.pdf` | - | [27856](https://solved.ac/problems/27856) | | **C** | Quotdoku | `gnyr/2022/C-Quotdoku` | `gnyr/2022/C-Quotdoku/C-Quotdoku.pdf` | - | [27857](https://solved.ac/problems/27857) | | **D** | Counting Pythagorean Triples | `gnyr/2022/problems/D-PythagTrips` | `gnyr/2022/problems/D-PythagTrips/D-PythagTrips.pdf` | - | [27858](https://solved.ac/problems/27858) | | **E** | Clarissa's Conical Cannolis | `gnyr/2022/E-ClarissasCannolis` | `gnyr/2022/E-ClarissasCannolis/E-ClarissasCannolis.pdf` | - | [27859](https://solved.ac/problems/27859) | | **F** | Busy As a Bee | `gnyr/2022/problems/F-BusyAsaBee` | `gnyr/2022/problems/F-BusyAsaBee/F-BusyAsaBee.pdf` | - | [27860](https://solved.ac/problems/27860) | | **G** | Linked Triangles | `gnyr/2022/problems/G-TriLink` | `gnyr/2022/problems/G-TriLink/G-TriLink.pdf` | - | [27861](https://solved.ac/problems/27861) | | **H** | You You See What? | `gnyr/2022/H-YouYouSeeWhat` | `gnyr/2022/H-YouYouSeeWhat/H-YouYouSeeWhat.pdf` | - | [27862](https://solved.ac/problems/27862) | | **I** | Caravan Trip Plans | `gnyr/2022/I-Caravan` | `gnyr/2022/I-Caravan/I-Caravan.pdf` | - | [27863](https://solved.ac/problems/27863) | | **J** | PSET | `gnyr/2022/J-PSet` | `gnyr/2022/J-PSet/J-PSet.pdf` | - | [27864](https://solved.ac/problems/27864) | --- ## Greater New York Regional Contest (2023) - **Contest Slug:** `gnyr` - **Year:** 2023 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2023%20North%20America%20East%20Division%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4013) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------------------ | :------------------------------ | :------------------------- | :-----------------------------------------------------------------------: | :---------------------------------------: | | **A** | Cornhusker | `gnyr/2023/A-cornhusker` | `gnyr/2023/problemset.pdf` | [cornhusker](https://open.kattis.com/problems/cornhusker) | [30527](https://solved.ac/problems/30527) | | **B** | A Pivotal Question | `gnyr/2023/B-apivotalquestion` | `gnyr/2023/problemset.pdf` | [apivotalquestion](https://open.kattis.com/problems/apivotalquestion) | [30524](https://solved.ac/problems/30524) | | **C** | Prof. Fumblemore and the Collatz Conjecture | `gnyr/2023/C-coltype` | `gnyr/2023/problemset.pdf` | [coltype](https://open.kattis.com/problems/coltype) | [30528](https://solved.ac/problems/30528) | | **D** | Double Up | `gnyr/2023/D-doubleup` | `gnyr/2023/problemset.pdf` | [doubleup](https://open.kattis.com/problems/doubleup) | [30529](https://solved.ac/problems/30529) | | **E** | Three Spheres and a Tetrahedron | `gnyr/2023/E-tetrasphere` | `gnyr/2023/problemset.pdf` | - | [24744](https://solved.ac/problems/24744) | | **F** | Forest for the Trees | `gnyr/2023/F-forestforthetrees` | `gnyr/2023/problemset.pdf` | [forestforthetrees2](https://open.kattis.com/problems/forestforthetrees2) | [30530](https://solved.ac/problems/30530) | | **G** | Pearls | `gnyr/2023/G-pearls` | `gnyr/2023/problemset.pdf` | [pearls](https://open.kattis.com/problems/pearls) | [30533](https://solved.ac/problems/30533) | | **H** | A (Fast) Walk in the Woods | `gnyr/2023/H-walkinthewoods` | `gnyr/2023/problemset.pdf` | [walkinthewoods](https://open.kattis.com/problems/walkinthewoods) | [30535](https://solved.ac/problems/30535) | | **I** | ISBN Conversion | `gnyr/2023/I-isbnconversion` | `gnyr/2023/problemset.pdf` | [isbnconversion](https://open.kattis.com/problems/isbnconversion) | [30532](https://solved.ac/problems/30532) | | **J** | Base Hi-Lo Game | `gnyr/2023/J-basehilo` | `gnyr/2023/problemset.pdf` | - | [30537](https://solved.ac/problems/30537) | | **K** | Plus Minus Four Squares | `gnyr/2023/K-plusminusfoursq` | `gnyr/2023/problemset.pdf` | - | [30538](https://solved.ac/problems/30538) | | **L** | Make Your Own Morse Code Palindrome | `gnyr/2023/L-morsepal` | `gnyr/2023/problemset.pdf` | - | [30539](https://solved.ac/problems/30539) | --- ## Greater New York Regional Contest (2024) - **Contest Slug:** `gnyr` - **Year:** 2024 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2024%20North%20America%20East%20Division%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4342) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :------------------------------------ | :------------------------- | :---------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | A Stack of Gold | `gnyr/2024/A-Astackofgold` | `gnyr/2024/ProblemSet.pdf` | [astackofgold](https://open.kattis.com/problems/astackofgold) | [32805](https://solved.ac/problems/32805) | | **B** | Average Substring Value | `gnyr/2024/B-Averagesubstringvalue` | `gnyr/2024/ProblemSet.pdf` | [averagesubstringvalue](https://open.kattis.com/problems/averagesubstringvalue) | [32806](https://solved.ac/problems/32806) | | **C** | Balancing Art | `gnyr/2024/C-Balancingart` | `gnyr/2024/ProblemSet.pdf` | [balancingart](https://open.kattis.com/problems/balancingart) | [32807](https://solved.ac/problems/32807) | | **D** | Brownian Bears | `gnyr/2024/D-Brownianbears` | `gnyr/2024/ProblemSet.pdf` | [brownianbears](https://open.kattis.com/problems/brownianbears) | [32808](https://solved.ac/problems/32808) | | **E** | Fences Make Good Neighbors | `gnyr/2024/E-Fencesmakegoodneighbors` | `gnyr/2024/ProblemSet.pdf` | [fencesmakegoodneighbors](https://open.kattis.com/problems/fencesmakegoodneighbors) | [32809](https://solved.ac/problems/32809) | | **F** | Leapfrog Encryption | `gnyr/2024/F-Leapfrogencryption` | `gnyr/2024/ProblemSet.pdf` | [leapfrogencryption](https://open.kattis.com/problems/leapfrogencryption) | [32810](https://solved.ac/problems/32810) | | **G** | Letter Balloons | `gnyr/2024/G-Letterballoons` | `gnyr/2024/ProblemSet.pdf` | [letterballoons](https://open.kattis.com/contests/epgg92/problems/letterballoons) | [32811](https://solved.ac/problems/32811) | | **H** | Marching Orders | `gnyr/2024/H-Marchingorders` | `gnyr/2024/ProblemSet.pdf` | [marchingorders](https://open.kattis.com/problems/marchingorders) | [32812](https://solved.ac/problems/32812) | | **I** | Oooh I See | `gnyr/2024/I-Ooohisee` | `gnyr/2024/ProblemSet.pdf` | [ooohisee](https://open.kattis.com/problems/ooohisee) | [32813](https://solved.ac/problems/32813) | | **J** | Pascal Meets Boole | `gnyr/2024/J-Pascalmeetsboole` | `gnyr/2024/ProblemSet.pdf` | [pascalmeetsboole](https://open.kattis.com/problems/pascalmeetsboole) | [32814](https://solved.ac/problems/32814) | | **K** | Pony-less Express | `gnyr/2024/K-Ponylessexpress` | `gnyr/2024/ProblemSet.pdf` | [ponylessexpress](https://open.kattis.com/problems/ponylessexpress) | [32815](https://solved.ac/problems/32815) | | **L** | Repetitive Routes | `gnyr/2024/L-Repetitiveroutes` | `gnyr/2024/ProblemSet.pdf` | [repetitiveroutes](https://open.kattis.com/problems/repetitiveroutes) | [32816](https://solved.ac/problems/32816) | | **M** | Smart Password Validation | `gnyr/2024/M-Smartpasswordvalidation` | `gnyr/2024/ProblemSet.pdf` | [smartpasswordvalidation](https://open.kattis.com/problems/smartpasswordvalidation) | [32817](https://solved.ac/problems/32817) | --- ## Greater New York Regional Contest (2025) - **Contest Slug:** `gnyr` - **Year:** 2025 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2025%20North%20America%20East%20Division%20Contest) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------- | :--------------------------------- | :------------------------------------------------------------ | :---------------------------------------------------------------------------: | :-------: | | **A** | A Little Leftover Pizza | `gnyr/2025/A-Alittleleftoverpizza` | `gnyr/2025/A-Alittleleftoverpizza/A-Alittleleftoverpizza.pdf` | [alittleleftoverpizza](https://open.kattis.com/problems/alittleleftoverpizza) | - | | **B** | Andor Strikes Again | `gnyr/2025/B-Andor` | `gnyr/2025/B-Andor/B-Andor.pdf` | [andor](https://open.kattis.com/problems/andor) | - | | **C** | AROD | `gnyr/2025/C-Arod` | `gnyr/2025/C-Arod/C-Arod.pdf` | [arod](https://open.kattis.com/problems/arod) | - | | **D** | But I Want to Win | `gnyr/2025/D-Butiwanttowin` | `gnyr/2025/D-Butiwanttowin/D-Butiwanttowin.pdf` | [butiwanttowin](https://open.kattis.com/problems/butiwanttowin) | - | | **E** | Chess Solitaire | `gnyr/2025/E-Chesssolitaire` | `gnyr/2025/E-Chesssolitaire/E-Chesssolitaire.pdf` | [chesssolitaire](https://open.kattis.com/problems/chesssolitaire) | - | | **F** | Fractional Sequence | `gnyr/2025/F-Fractionalsequence` | `gnyr/2025/F-Fractionalsequence/F-Fractionalsequence.pdf` | [fractionalsequence](https://open.kattis.com/problems/fractionalsequence) | - | | **G** | How Many Balls? | `gnyr/2025/G-Howmanyballs` | `gnyr/2025/G-Howmanyballs/G-Howmanyballs.pdf` | [howmanyballs](https://open.kattis.com/problems/howmanyballs) | - | | **H** | Move It, Slowpoke! | `gnyr/2025/H-Moveitslowpoke` | `gnyr/2025/H-Moveitslowpoke/H-Moveitslowpoke.pdf` | [moveitslowpoke](https://open.kattis.com/problems/moveitslowpoke) | - | | **I** | Number Pyramid | `gnyr/2025/I-Numberpyramid` | `gnyr/2025/I-Numberpyramid/I-Numberpyramid.pdf` | [numberpyramid](https://open.kattis.com/problems/numberpyramid) | - | | **J** | Polyomino Tiling | `gnyr/2025/J-Polyominotiling` | `gnyr/2025/J-Polyominotiling/J-Polyominotiling.pdf` | [polyominotiling](https://open.kattis.com/problems/polyominotiling) | - | | **K** | Triptych | `gnyr/2025/K-Triptych` | `gnyr/2025/K-Triptych/K-Triptych.pdf` | [triptych](https://open.kattis.com/problems/triptych) | - | | **L** | Valley Gulls | `gnyr/2025/L-Valleygulls` | `gnyr/2025/L-Valleygulls/L-Valleygulls.pdf` | [valleygulls](https://open.kattis.com/problems/valleygulls) | - | --- ## Mid-Central USA Regional Contest (2000) - **Contest Slug:** `mcpc` - **Year:** 2000 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2000%20ACM%20Mid-Central%20Regional%20Programming%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/152) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------- | :------------------- | :--------------------------------- | :-------------------------------------------------------------------------: | :---------------------------------------: | | **A** | The Triangle Game | `mcpc/2000/triangle` | `mcpc/2000/triangle/triangle.html` | [trianglegame](https://open.kattis.com/problems/trianglegame) | [4658](https://solved.ac/problems/4658) | | **B** | Easier Done than Said? | `mcpc/2000/say` | `mcpc/2000/say/say.html` | [easierdonethansaid](https://open.kattis.com/problems/easierdonethansaid) | [4659](https://solved.ac/problems/4659) | | **C** | Colorville | `mcpc/2000/colors` | `mcpc/2000/colors/colors.html` | [colorville](https://open.kattis.com/problems/colorville) | [4660](https://solved.ac/problems/4660) | | **D** | Falling Leaves | `mcpc/2000/leaves` | `mcpc/2000/leaves/leaves.html` | [fallingleaves](https://open.kattis.com/problems/fallingleaves) | [4661](https://solved.ac/problems/4661) | | **E** | Edge Detection | `mcpc/2000/edge` | `mcpc/2000/edge/edge.html` | [edgedetection](https://open.kattis.com/problems/edgedetection) | [4662](https://solved.ac/problems/4662) | | **F** | Instruens Fabulam | `mcpc/2000/fab` | `mcpc/2000/fab/fab.html` | [instruensfabulam](https://open.kattis.com/problems/instruensfabulam) | [4663](https://solved.ac/problems/4663) | --- ## Mid-Central USA Regional Contest (2001) - **Contest Slug:** `mcpc` - **Year:** 2001 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/151) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------- | :------------------- | :--------------------------------- | :----: | :---------------------------------------: | | **A** | Transmitters | `mcpc/2001/transmit` | `mcpc/2001/transmit/transmit.html` | - | [4651](https://solved.ac/problems/4651) | | **B** | W's Cipher | `mcpc/2001/wscipher` | `mcpc/2001/wscipher/wscipher.html` | - | [4652](https://solved.ac/problems/4652) | | **C** | Split Windows | `mcpc/2001/split` | `mcpc/2001/split/split.html` | - | [4653](https://solved.ac/problems/4653) | | **D** | Index Generation | `mcpc/2001/indexgen` | `mcpc/2001/indexgen/indexgen.html` | - | [4654](https://solved.ac/problems/4654) | | **E** | Hangover | `mcpc/2001/hangover` | `mcpc/2001/hangover/hangover.html` | - | [4655](https://solved.ac/problems/4655) | | **F** | Double Vision | `mcpc/2001/double` | `mcpc/2001/double/double.html` | - | [4656](https://solved.ac/problems/4656) | | **G** | Image Perimeters | `mcpc/2001/image` | `mcpc/2001/image/image.html` | - | [4657](https://solved.ac/problems/4657) | --- ## Mid-Central USA Regional Contest (2002) - **Contest Slug:** `mcpc` - **Year:** 2002 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/150) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------- | :------------------- | :--------------------------------- | :----: | :---------------------------------------: | | **A** | Programmer, Rank Thyself | `mcpc/2002/rank` | `mcpc/2002/rank/rank.html` | - | [4644](https://solved.ac/problems/4644) | | **B** | Hilbert Curve Intersections | `mcpc/2002/hilbert` | `mcpc/2002/hilbert/hilbert.html` | - | [4645](https://solved.ac/problems/4645) | | **C** | Magnificent Meatballs | `mcpc/2002/meatball` | `mcpc/2002/meatball/meatball.html` | - | [4646](https://solved.ac/problems/4646) | | **D** | Safecracker | `mcpc/2002/safe` | `mcpc/2002/safe/safe.html` | - | [4647](https://solved.ac/problems/4647) | | **E** | Oil Pipeline | `mcpc/2002/pipeline` | `mcpc/2002/pipeline/pipeline.html` | - | [4648](https://solved.ac/problems/4648) | | **F** | Tanning Salon | `mcpc/2002/salon` | `mcpc/2002/salon/salon.html` | - | [4649](https://solved.ac/problems/4649) | | **G** | Jungle Roads | `mcpc/2002/jungle` | `mcpc/2002/jungle/jungle.html` | - | [4650](https://solved.ac/problems/4650) | --- ## Mid-Central USA Regional Contest (2003) - **Contest Slug:** `mcpc` - **Year:** 2003 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/149) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------ | :------------------- | :--------------------------------- | :----: | :-------------------------------------: | | **A** | Clay Bully | `mcpc/2003/clay` | `mcpc/2003/clay/clay.html` | - | [4636](https://solved.ac/problems/4636) | | **B** | Robots | `mcpc/2003/robots` | `mcpc/2003/robots/robots.html` | - | [4637](https://solved.ac/problems/4637) | | **C** | Bright Bracelet | `mcpc/2003/bracelet` | `mcpc/2003/bracelet/bracelet.html` | - | [4638](https://solved.ac/problems/4638) | | **D** | Treadmill | `mcpc/2003/tread` | `mcpc/2003/tread/tread.html` | - | [4639](https://solved.ac/problems/4639) | | **E** | Data Mining? | `mcpc/2003/mines` | `mcpc/2003/mines/mines.html` | - | [4640](https://solved.ac/problems/4640) | | **F** | Doubles | `mcpc/2003/doubles` | `mcpc/2003/doubles/doubles.html` | - | [4641](https://solved.ac/problems/4641) | | **G** | Fax Regions | `mcpc/2003/fax` | `mcpc/2003/fax/fax.html` | - | [4642](https://solved.ac/problems/4642) | | **H** | Tournament Brackets | `mcpc/2003/tourn` | `mcpc/2003/tourn/tourn.html` | - | [4643](https://solved.ac/problems/4643) | --- ## Mid-Central USA Regional Contest (2004) - **Contest Slug:** `mcpc` - **Year:** 2004 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2004%20ACM%20ICPC%20Mid-Central%20North%20American%20Regional%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/148) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :------------------- | :-------------------------------- | :---------------------------------------------------------------: | :-------------------------------------: | | **A** | Primary X-Subfactor Series | `mcpc/2004/pxs` | `mcpc/2004/pxs/pxs.pdf` | [pxs](https://open.kattis.com/problems/pxs) | [2363](https://solved.ac/problems/2363) | | **B** | Triangle Cuts | `mcpc/2004/triangle` | `mcpc/2004/triangle/triangle.pdf` | [trianglecuts](https://open.kattis.com/problems/trianglecuts) | [4630](https://solved.ac/problems/4630) | | **C** | Symmetric Order | `mcpc/2004/order` | `mcpc/2004/order/order.pdf` | [symmetricorder](https://open.kattis.com/problems/symmetricorder) | [4631](https://solved.ac/problems/4631) | | **D** | Flow Layout | `mcpc/2004/flow` | `mcpc/2004/flow/flow.pdf` | [flowlayout](https://open.kattis.com/problems/flowlayout) | [4632](https://solved.ac/problems/4632) | | **E** | Permutation Code | `mcpc/2004/permcode` | `mcpc/2004/permcode/permcode.pdf` | [permcode](https://open.kattis.com/problems/permcode) | [4633](https://solved.ac/problems/4633) | | **F** | Ink Blots | `mcpc/2004/blots` | `mcpc/2004/blots/blots.pdf` | [inkblots](https://open.kattis.com/problems/inkblots) | [4634](https://solved.ac/problems/4634) | | **G** | Speed Limit | `mcpc/2004/speed` | `mcpc/2004/speed/speed.pdf` | [speedlimit](https://open.kattis.com/problems/speedlimit) | [4635](https://solved.ac/problems/4635) | --- ## Mid-Central USA Regional Contest (2005) - **Contest Slug:** `mcpc` - **Year:** 2005 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/147) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------- | :-------------------- | :---------------------------------- | :----: | :---------------------------------------: | | **A** | Pascal's Travels | `mcpc/2005/pascal` | `mcpc/2005/pascal/pascal.pdf` | - | [4620](https://solved.ac/problems/4620) | | **B** | Overflowing Bookshelf | `mcpc/2005/bookshelf` | `mcpc/2005/bookshelf/bookshelf.pdf` | - | [4621](https://solved.ac/problems/4621) | | **C** | Connect | `mcpc/2005/connect` | `mcpc/2005/connect/connect.pdf` | - | [4622](https://solved.ac/problems/4622) | | **D** | Copier Reduction | `mcpc/2005/copier` | `mcpc/2005/copier/copier.pdf` | - | [4623](https://solved.ac/problems/4623) | | **E** | Time to Graduate | `mcpc/2005/graduate` | `mcpc/2005/graduate/graduate.pdf` | - | [4624](https://solved.ac/problems/4624) | | **F** | Painter | `mcpc/2005/painter` | `mcpc/2005/painter/painter.pdf` | - | [4625](https://solved.ac/problems/4625) | | **G** | Consecutive Digits | `mcpc/2005/digits` | `mcpc/2005/digits/digits.pdf` | - | [4626](https://solved.ac/problems/4626) | | **H** | Leapin' Lizards | `mcpc/2005/lizards` | `mcpc/2005/lizards/lizards.pdf` | - | [4627](https://solved.ac/problems/4627) | | **I** | Netiquette | `mcpc/2005/netiq` | `mcpc/2005/netiq/netiq.pdf` | - | [4628](https://solved.ac/problems/4628) | --- ## Mid-Central USA Regional Contest (2006) - **Contest Slug:** `mcpc` - **Year:** 2006 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/146) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------ | :------------------- | :-------------------------------- | :----: | :---------------------------------------: | | **A** | Quicksum | `mcpc/2006/quicksum` | `mcpc/2006/quicksum/quicksum.pdf` | - | [4613](https://solved.ac/problems/4613) | | **B** | Linear Pachinko | `mcpc/2006/linear` | `mcpc/2006/linear/linear.pdf` | - | [4614](https://solved.ac/problems/4614) | | **C** | Surprising Strings | `mcpc/2006/surprise` | `mcpc/2006/surprise/surprise.pdf` | - | [1972](https://solved.ac/problems/1972) | | **D** | Falling Ice | `mcpc/2006/falling` | `mcpc/2006/falling/falling.pdf` | - | [4616](https://solved.ac/problems/4616) | | **E** | Frugal Search | `mcpc/2006/frugal` | `mcpc/2006/frugal/frugal.pdf` | - | [4617](https://solved.ac/problems/4617) | | **F** | Go Go Gorelians | `mcpc/2006/gorelian` | `mcpc/2006/gorelian/gorelian.pdf` | - | [4618](https://solved.ac/problems/4618) | | **G** | Root of the Problem | `mcpc/2006/root` | `mcpc/2006/root/root.pdf` | - | [4619](https://solved.ac/problems/4619) | --- ## Mid-Central USA Regional Contest (2007) - **Contest Slug:** `mcpc` - **Year:** 2007 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/145) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------------- | :---------------------- | :-------------------------------------- | :----: | :-------------------------------------: | | **A** | Typesetting | `mcpc/2007/typesetting` | `mcpc/2007/typesetting/typesetting.pdf` | - | [4605](https://solved.ac/problems/4605) | | **B** | The Seven Percent Solution | `mcpc/2007/percent` | `mcpc/2007/percent/percent.pdf` | - | [4606](https://solved.ac/problems/4606) | | **C** | Slink | `mcpc/2007/slink` | `mcpc/2007/slink/slink.pdf` | - | [4607](https://solved.ac/problems/4607) | | **D** | Persistent Bits | `mcpc/2007/bits` | `mcpc/2007/bits/bits.pdf` | - | [4608](https://solved.ac/problems/4608) | | **E** | Here We Go(relians) Again | `mcpc/2007/gorelian` | `mcpc/2007/gorelian/gorelian.html` | - | [4609](https://solved.ac/problems/4609) | | **F** | Electronic Document Security | `mcpc/2007/pdf` | `mcpc/2007/pdf/eds.pdf` | - | [4610](https://solved.ac/problems/4610) | | **G** | Guard | `mcpc/2007/guard` | `mcpc/2007/guard/guard.pdf` | - | [4611](https://solved.ac/problems/4611) | | **H** | Rock Skipping | `mcpc/2007/rock` | `mcpc/2007/rock/rock.pdf` | - | [4612](https://solved.ac/problems/4612) | --- ## Mid-Central USA Regional Contest (2008) - **Contest Slug:** `mcpc` - **Year:** 2008 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2008%20ICPC%20North%20America%20Mid-Central%20Regional) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/144) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------ | :------------------ | :------------------------------ | :---------------------------------------------------------------------------: | :-------------------------------------: | | **A** | Parity | `mcpc/2008/parity` | `mcpc/2008/parity/parity.pdf` | [parity](https://open.kattis.com/problems/parity) | [4597](https://solved.ac/problems/4597) | | **B** | Lampyridae Teleportae | `mcpc/2008/firefly` | `mcpc/2008/firefly/firefly.pdf` | [lampyridaeteleportae](https://open.kattis.com/problems/lampyridaeteleportae) | [4598](https://solved.ac/problems/4598) | | **C** | Hex Tile Equations | `mcpc/2008/hex` | `mcpc/2008/hex/hex.pdf` | [hextileequations](https://open.kattis.com/problems/hextileequations) | [4599](https://solved.ac/problems/4599) | | **D** | The Bridges of San Mochti | `mcpc/2008/bridges` | `mcpc/2008/bridges/bridges.pdf` | [bridgesofsanmochti](https://open.kattis.com/problems/bridgesofsanmochti) | [4600](https://solved.ac/problems/4600) | | **E** | Bulletin Board | `mcpc/2008/pdf` | `mcpc/2008/pdf/bulletin.pdf` | [bulletinboard](https://open.kattis.com/problems/bulletinboard) | [4601](https://solved.ac/problems/4601) | | **F** | Serial Numbers | `mcpc/2008/serials` | `mcpc/2008/serials/serials.pdf` | [serialnumbers](https://open.kattis.com/problems/serialnumbers) | [4602](https://solved.ac/problems/4602) | | **G** | Line & Circle Maze | `mcpc/2008/maze` | `mcpc/2008/maze/maze.pdf` | [linecirclemaze](https://open.kattis.com/problems/linecirclemaze) | [4603](https://solved.ac/problems/4603) | | **H** | Steganography | `mcpc/2008/steg` | `mcpc/2008/steg/steg.pdf` | [steganography](https://open.kattis.com/problems/steganography) | [4604](https://solved.ac/problems/4604) | --- ## Mid-Central USA Regional Contest (2009) - **Contest Slug:** `mcpc` - **Year:** 2009 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2009%20ACM%20Mid-Central%20USA%20Regional%20Programming%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/143) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------- | :------------------ | :-------------------------------- | :-------------------------------------------------------------------: | :---------------------------------------: | | **A** | Up and Down | `mcpc/2009/up` | `mcpc/2009/pdfs/A-up.pdf` | [upanddown2](https://open.kattis.com/problems/upanddown2) | [4588](https://solved.ac/problems/4588) | | **B** | Gnome Sequencing | `mcpc/2009/gnome` | `mcpc/2009/gnome/B-gnome.pdf` | [gnomesequencing](https://open.kattis.com/problems/gnomesequencing) | [4589](https://solved.ac/problems/4589) | | **C** | DuLL | `mcpc/2009/dull` | `mcpc/2009/dull/C-DuLL.pdf` | [dull](https://open.kattis.com/problems/dull) | [4590](https://solved.ac/problems/4590) | | **D** | Black Vienna | `mcpc/2009/vienna` | `mcpc/2009/vienna/D-vienna.pdf` | [blackvienna2](https://open.kattis.com/problems/blackvienna2) | [4591](https://solved.ac/problems/4591) | | **E** | Duplicate Removal | `mcpc/2009/dup` | `mcpc/2009/dup/E-dup.pdf` | [duplicateremoval](https://open.kattis.com/problems/duplicateremoval) | [4592](https://solved.ac/problems/4592) | | **F** | Rock, Paper, Scissors | `mcpc/2009/rps` | `mcpc/2009/rps/F-rps.pdf` | [rps](https://open.kattis.com/problems/rps) | [4593](https://solved.ac/problems/4593) | | **G** | A to Z Numerals | `mcpc/2009/numeral` | `mcpc/2009/numeral/G-numeral.pdf` | [a2znumerals](https://open.kattis.com/problems/a2znumerals) | [4594](https://solved.ac/problems/4594) | | **H** | Cell Towers | `mcpc/2009/cell` | `mcpc/2009/cell/H-cell.pdf` | [celltowers](https://open.kattis.com/problems/celltowers) | [4595](https://solved.ac/problems/4595) | | **I** | RIPOFF | `mcpc/2009/ripoff` | `mcpc/2009/ripoff/I-RIPOFF.pdf` | [ripoff](https://open.kattis.com/problems/ripoff) | [4596](https://solved.ac/problems/4596) | --- ## Mid-Central USA Regional Contest (2010) - **Contest Slug:** `mcpc` - **Year:** 2010 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/142) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :-------------------- | :------------------------------------ | :----: | :-------------------------------------: | | **A** | Judges' Time Calculation | `mcpc/2010/calc` | `mcpc/2010/calc/A calc.pdf` | - | [4579](https://solved.ac/problems/4579) | | **B** | Mad Scientist | `mcpc/2010/mad` | `mcpc/2010/mad/B mad.pdf` | - | [4580](https://solved.ac/problems/4580) | | **C** | Voting | `mcpc/2010/voting` | `mcpc/2010/voting/C voting.pdf` | - | [4581](https://solved.ac/problems/4581) | | **D** | Queen Collisions | `mcpc/2010/collision` | `mcpc/2010/collision/D collision.pdf` | - | [4582](https://solved.ac/problems/4582) | | **E** | Mirror, Mirror on the Wall | `mcpc/2010/mirror` | `mcpc/2010/mirror/E mirror.pdf` | - | [4583](https://solved.ac/problems/4583) | | **F** | Top This | `mcpc/2010/top` | `mcpc/2010/top/F top.pdf` | - | [4584](https://solved.ac/problems/4584) | | **G** | Quick Search | `mcpc/2010/search` | `mcpc/2010/search/G search.pdf` | - | [4585](https://solved.ac/problems/4585) | | **H** | Image Compression | `mcpc/2010/pdf` | `mcpc/2010/pdf/H compress.pdf` | - | [4586](https://solved.ac/problems/4586) | | **I** | Egyptian Fractions | `mcpc/2010/egypt` | `mcpc/2010/egypt/I egypt.pdf` | - | [4587](https://solved.ac/problems/4587) | --- ## Mid-Central USA Regional Contest (2011) - **Contest Slug:** `mcpc` - **Year:** 2011 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/141) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------- | :--------------------- | :-------------------------------------- | :----: | :-------------------------------------: | | **A** | Grade School Multiplication | `mcpc/2011/pdf` | `mcpc/2011/pdf/A-multiply.pdf` | - | [4571](https://solved.ac/problems/4571) | | **B** | Laser Tag | `mcpc/2011/laser` | `mcpc/2011/laser/B-laser.pdf` | - | [4572](https://solved.ac/problems/4572) | | **C** | Pizza Pricing | `mcpc/2011/pizza` | `mcpc/2011/pizza/C-pizza.pdf` | - | [4573](https://solved.ac/problems/4573) | | **D** | Su-domino-ku | `mcpc/2011/sudominoku` | `mcpc/2011/sudominoku/D-sudominoku.pdf` | - | [4574](https://solved.ac/problems/4574) | | **E** | Refrigerator Magnets | `mcpc/2011/magnets` | `mcpc/2011/magnets/E-magnets.pdf` | - | [4575](https://solved.ac/problems/4575) | | **F** | Shut the Box | `mcpc/2011/shut` | `mcpc/2011/shut/F-shut.pdf` | - | [4576](https://solved.ac/problems/4576) | | **G** | Sokoban | `mcpc/2011/sokoban` | `mcpc/2011/sokoban/G-sokoban.pdf` | - | [4577](https://solved.ac/problems/4577) | | **H** | Crash and Go(relians) | `mcpc/2011/crash` | `mcpc/2011/crash/H-crash.pdf` | - | [4578](https://solved.ac/problems/4578) | --- ## Mid-Central USA Regional Contest (2012) - **Contest Slug:** `mcpc` - **Year:** 2012 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/140) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------- | :------------------ | :--------------------------------------------- | :----: | :-------------------------------------: | | **A** | Pythagoras's Revenge | `mcpc/2012/revenge` | `mcpc/2012/revenge/A-Pythagoras's Revenge.pdf` | - | [4563](https://solved.ac/problems/4563) | | **B** | Digit Solitaire | `mcpc/2012/pdf` | `mcpc/2012/pdf/B-Digit Solitaire.pdf` | - | [4564](https://solved.ac/problems/4564) | | **C** | Any Way You Slice It | `mcpc/2012/slice` | `mcpc/2012/slice/C-Any Way You Slice It.pdf` | - | [4565](https://solved.ac/problems/4565) | | **D** | Is the Name of This Problem | `mcpc/2012/quine` | `mcpc/2012/quine/quine.html` | - | [4566](https://solved.ac/problems/4566) | | **F** | LRU Caching | `mcpc/2012/lru` | `mcpc/2012/lru/F-LRU Cache.pdf` | - | [4568](https://solved.ac/problems/4568) | | **G** | Jugglefest | `mcpc/2012/juggle` | `mcpc/2012/juggle/G-Jugglefest.pdf` | - | [4569](https://solved.ac/problems/4569) | | **H** | Bounce | `mcpc/2012/bounce` | `mcpc/2012/bounce/H-Bounce.pdf` | - | [4570](https://solved.ac/problems/4570) | --- ## Mid-Central USA Regional Contest (2013) - **Contest Slug:** `mcpc` - **Year:** 2013 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1167) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------ | :------------------- | :----------------------------------------- | :----: | :---------------------------------------: | | **A** | Welcome Party | `mcpc/2013/welcome` | `mcpc/2013/pdfs/A Welcome Party.pdf` | - | [9435](https://solved.ac/problems/9435) | | **B** | Round Robin | `mcpc/2013/round` | `mcpc/2013/pdfs/B Round Robin.pdf` | - | [9436](https://solved.ac/problems/9436) | | **C** | Missing Pages | `mcpc/2013/missing` | `mcpc/2013/pdfs/C Missing Pages.pdf` | - | [9437](https://solved.ac/problems/9437) | | **D** | Probability Paradox | `mcpc/2013/paradox` | `mcpc/2013/pdfs/D Probability Paradox.pdf` | - | [9438](https://solved.ac/problems/9438) | | **E** | Letter Cubes | `mcpc/2013/cubes` | `mcpc/2013/pdfs/E Letter Cubes.pdf` | - | [9439](https://solved.ac/problems/9439) | | **F** | Digit Sum | `mcpc/2013/digitsum` | `mcpc/2013/pdfs/F Digit Sum.pdf` | - | [9440](https://solved.ac/problems/9440) | | **G** | Cash Cow | `mcpc/2013/cashcow` | `mcpc/2013/pdfs/G Cash Cow.pdf` | - | [9441](https://solved.ac/problems/9441) | | **H** | Sort Me | `mcpc/2013/sortme` | `mcpc/2013/pdfs/H Sort Me.pdf` | - | [9442](https://solved.ac/problems/9442) | --- ## Mid-Central USA Regional Contest (2014) - **Contest Slug:** `mcpc` - **Year:** 2014 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/ACM/ICPC%20Mid-Central%20USA%202014%20Regional%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1292) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------- | :------------------- | :--------------------------------- | :-------------------------------------------------------------------: | :---------------------------------------: | | **A** | (More) Multiplication | `mcpc/2014/multiply` | `mcpc/2014/multiply/multiply.html` | [multiplication](https://open.kattis.com/problems/multiplication) | [10341](https://solved.ac/problems/10341) | | **B** | Fun House | `mcpc/2014/fun` | `mcpc/2014/fun/fun.html` | [funhouse](https://open.kattis.com/problems/funhouse) | [10342](https://solved.ac/problems/10342) | | **C** | Lexicography | `mcpc/2014/lex` | `mcpc/2014/lex/lex.html` | [lexicography](https://open.kattis.com/problems/lexicography) | [10343](https://solved.ac/problems/10343) | | **D** | The Leprechaun Hunt | `mcpc/2014/hunt` | `mcpc/2014/hunt/hunt.html` | [leprechaunhunt](https://open.kattis.com/problems/leprechaunhunt) | [10344](https://solved.ac/problems/10344) | | **E** | Word Cloud | `mcpc/2014/cloud` | `mcpc/2014/cloud/cloud.html` | [wordcloud](https://open.kattis.com/problems/wordcloud) | [10345](https://solved.ac/problems/10345) | | **F** | The Maze Makers | `mcpc/2014/maze` | `mcpc/2014/maze/maze.html` | [mazemakers](https://open.kattis.com/problems/mazemakers) | [10346](https://solved.ac/problems/10346) | | **G** | Reverse Rot | `mcpc/2014/rot` | `mcpc/2014/rot/rot.html` | [reverserot](https://open.kattis.com/problems/reverserot) | [10347](https://solved.ac/problems/10347) | | **H** | Shrine Maintenance | `mcpc/2014/shrine` | `mcpc/2014/shrine/shrine.html` | [shrine](https://open.kattis.com/problems/shrine) | [10348](https://solved.ac/problems/10348) | | **I** | Wet Tiles | `mcpc/2014/wet` | `mcpc/2014/wet/wet.html` | [wettiles](https://open.kattis.com/problems/wettiles) | [10349](https://solved.ac/problems/10349) | --- ## Mid-Central USA Regional Contest (2017) - **Contest Slug:** `mcpc` - **Year:** 2017 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2017%20ICPC%20Mid-Central%20Regional) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1790) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------- | :----------------------- | :----------------------- | :-----------------------------------------------------------: | :---------------------------------------: | | **A** | Nine Knights | `mcpc/2017/nineknights` | `mcpc/2017/mcpc2017.pdf` | [nineknights](https://open.kattis.com/problems/nineknights) | [15095](https://solved.ac/problems/15095) | | **B** | Batter Up | `mcpc/2017/batterup` | `mcpc/2017/mcpc2017.pdf` | - | [15096](https://solved.ac/problems/15096) | | **C** | Ring String | `mcpc/2017/ringstring` | `mcpc/2017/mcpc2017.pdf` | - | [15097](https://solved.ac/problems/15097) | | **D** | No Duplicates | `mcpc/2017/nodup` | `mcpc/2017/mcpc2017.pdf` | [nodup](https://open.kattis.com/problems/nodup) | [15098](https://solved.ac/problems/15098) | | **E** | Honey Heist | `mcpc/2017/honeyheist` | `mcpc/2017/mcpc2017.pdf` | [honeyheist](https://open.kattis.com/problems/honeyheist) | [15099](https://solved.ac/problems/15099) | | **F** | Orderly Class | `mcpc/2017/orderlyclass` | `mcpc/2017/mcpc2017.pdf` | [orderlyclass](https://open.kattis.com/problems/orderlyclass) | [15100](https://solved.ac/problems/15100) | | **G** | Faulty Robot | `mcpc/2017/faultyrobot` | `mcpc/2017/mcpc2017.pdf` | [faultyrobot](https://open.kattis.com/problems/faultyrobot) | [15101](https://solved.ac/problems/15101) | | **H** | Hopscotch | `mcpc/2017/hopscotch` | `mcpc/2017/mcpc2017.pdf` | [hopscotch](https://open.kattis.com/problems/hopscotch) | [15102](https://solved.ac/problems/15102) | | **I** | The Uncertainty of Politics | `mcpc/2017/politics` | `mcpc/2017/mcpc2017.pdf` | [politics](https://open.kattis.com/problems/politics) | [15103](https://solved.ac/problems/15103) | --- ## Mid-Central USA Regional Contest (2018) - **Contest Slug:** `mcpc` - **Year:** 2018 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2018%20ICPC%20Mid-Central%20Regional) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1946) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------ | :----------------------------- | :----------------------- | :-----------------------------------------------------------------------: | :---------------------------------------: | | **A** | Treehouses | `mcpc/2018/MCPC2018` | `mcpc/2018/mcpc2018.pdf` | [treehouses](https://open.kattis.com/problems/treehouses) | [16405](https://solved.ac/problems/16405) | | **B** | Exam | `mcpc/2018/exam` | `mcpc/2018/mcpc2018.pdf` | [exam](https://open.kattis.com/problems/exam) | [16406](https://solved.ac/problems/16406) | | **C** | Cops and Robbers | `mcpc/2018/copsandrobbers` | `mcpc/2018/mcpc2018.pdf` | [copsandrobbers](https://open.kattis.com/problems/copsandrobbers) | [16407](https://solved.ac/problems/16407) | | **D** | Poker Hand | `mcpc/2018/pokerhand` | `mcpc/2018/mcpc2018.pdf` | [pokerhand](https://open.kattis.com/problems/pokerhand) | [16408](https://solved.ac/problems/16408) | | **E** | Coprime Integers | `mcpc/2018/coprimeintegers` | `mcpc/2018/mcpc2018.pdf` | [coprimeintegers](https://open.kattis.com/problems/coprimeintegers) | [16409](https://solved.ac/problems/16409) | | **F** | Goat Rope | `mcpc/2018/goatrope` | `mcpc/2018/mcpc2018.pdf` | [goatrope](https://open.kattis.com/problems/goatrope) | [16410](https://solved.ac/problems/16410) | | **G** | Illiteracy | `mcpc/2018/illiteracy` | `mcpc/2018/mcpc2018.pdf` | [illiteracy](https://open.kattis.com/problems/illiteracy) | [16411](https://solved.ac/problems/16411) | | **H** | Heir's Dilemma | `mcpc/2018/heirsdilemma` | `mcpc/2018/mcpc2018.pdf` | [heirsdilemma](https://open.kattis.com/problems/heirsdilemma) | [16412](https://solved.ac/problems/16412) | | **I** | Random Manhattan Distance | `mcpc/2018/randommanhattan` | `mcpc/2018/mcpc2018.pdf` | [randommanhattan](https://open.kattis.com/problems/randommanhattan) | [16413](https://solved.ac/problems/16413) | | **J** | Mobilization | `mcpc/2018/mobilization` | `mcpc/2018/mcpc2018.pdf` | [mobilization](https://open.kattis.com/problems/mobilization) | [16414](https://solved.ac/problems/16414) | | **K** | Repeated Substrings | `mcpc/2018/repeatedsubstrings` | `mcpc/2018/mcpc2018.pdf` | [repeatedsubstrings](https://open.kattis.com/problems/repeatedsubstrings) | [16415](https://solved.ac/problems/16415) | --- ## North American Mid-Atlantic Region (2002) - **Contest Slug:** `midatl` - **Year:** 2002 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/168) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------------- | :----------------------- | :-------------------------------------- | :----: | :---------------------------------------: | | **A** | A Simple Question of Chemistry | `midatl/2002/problem-A` | `midatl/2002/MidAtlantic2002-final.pdf` | - | [4766](https://solved.ac/problems/4766) | | **B** | An Amazing Problem | `midatl/2002/problem-B` | `midatl/2002/MidAtlantic2002-final.pdf` | - | - | | **C** | Spelling Be | `midatl/2002/problem-C` | `midatl/2002/MidAtlantic2002-final.pdf` | - | [4775](https://solved.ac/problems/4775) | | **D** | Apply a Cold Compress | `midatl/2002/problem-D` | `midatl/2002/MidAtlantic2002-final.pdf` | - | [4776](https://solved.ac/problems/4776) | | **E** | A Baron Landscape | `midatl/2002/problem-E` | `midatl/2002/MidAtlantic2002-final.pdf` | - | [4777](https://solved.ac/problems/4777) | | **F** | In Defence of a Garden | `midatl/2002/problem-F` | `midatl/2002/MidAtlantic2002-final.pdf` | - | [4778](https://solved.ac/problems/4778) | | **G** | Cantoring Along | `midatl/2002/problem-G` | `midatl/2002/MidAtlantic2002-final.pdf` | - | [4779](https://solved.ac/problems/4779) | | **H** | Chambers Ceramic Conundrum | `midatl/2002/problem-H` | `midatl/2002/MidAtlantic2002-final.pdf` | - | [4780](https://solved.ac/problems/4780) | ### Practice Session | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------------- | :---------------- | :-------------------------------------- | :----: | :-------------------------------------: | | **P** | Practice Problem | - | `midatl/2002/Practice2002.pdf` | - | - | --- ## North American Mid-Atlantic Region (2003) - **Contest Slug:** `midatl` - **Year:** 2003 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/167) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------------- | :----------------------- | :-------------------------------- | :----: | :---------------------------------------: | | **A** | A Contesting Decision | `midatl/2003/problem-A` | `midatl/2003/MidAtlantic2003.pdf` | - | [4757](https://solved.ac/problems/4757) | | **B** | Which Way Do I Go? | `midatl/2003/problem-B` | `midatl/2003/MidAtlantic2003.pdf` | - | [4767](https://solved.ac/problems/4767) | | **C** | Choose Your Words Carefully | `midatl/2003/problem-C` | `midatl/2003/MidAtlantic2003.pdf` | - | [4768](https://solved.ac/problems/4768) | | **D** | A Round Peg in a Ground Hole | `midatl/2003/problem-D` | `midatl/2003/MidAtlantic2003.pdf` | - | [4769](https://solved.ac/problems/4769) | | **E** | Helping Florida | `midatl/2003/problem-E` | `midatl/2003/MidAtlantic2003.pdf` | - | [4770](https://solved.ac/problems/4770) | | **F** | Three Sides Make a Triangle | `midatl/2003/problem-F` | `midatl/2003/MidAtlantic2003.pdf` | - | [4771](https://solved.ac/problems/4771) | | **G** | High and Dry | `midatl/2003/problem-G` | `midatl/2003/MidAtlantic2003.pdf` | - | [4772](https://solved.ac/problems/4772) | | **H** | Reverse Roman Notation | `midatl/2003/problem-H` | `midatl/2003/MidAtlantic2003.pdf` | - | [4773](https://solved.ac/problems/4773) | ### Practice Session | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------------- | :---------------- | :-------------------------------- | :----: | :-------------------------------------: | | **P** | Practice Problem | - | `midatl/2003/Practice2003.pdf` | - | - | --- ## North American Mid-Atlantic Region (2004) - **Contest Slug:** `midatl` - **Year:** 2004 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/166) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------------------- | :------------------------ | :-------------------------------- | :----: | :---------------------------------------: | | **A** | Filling Out the Team | `midatl/2004/football` | `midatl/2004/MidAtlantic2004.pdf` | - | [4758](https://solved.ac/problems/4758) | | **B** | Auctions R Us | `midatl/2004/auction` | `midatl/2004/MidAtlantic2004.pdf` | - | [4759](https://solved.ac/problems/4759) | | **C** | GHOST | `midatl/2004/ghost` | `midatl/2004/MidAtlantic2004.pdf` | - | [4760](https://solved.ac/problems/4760) | | **D** | Doggone Moles | `midatl/2004/moles` | `midatl/2004/MidAtlantic2004.pdf` | - | [4761](https://solved.ac/problems/4761) | | **E** | Line of Sight | `midatl/2004/house` | `midatl/2004/MidAtlantic2004.pdf` | - | [4762](https://solved.ac/problems/4762) | | **F** | Tangled in Cables | `midatl/2004/cabling` | `midatl/2004/MidAtlantic2004.pdf` | - | [4763](https://solved.ac/problems/4763) | | **G** | All Roads Lead to Albuquerque, er, Rome | `midatl/2004/hubs` | `midatl/2004/MidAtlantic2004.pdf` | - | [4764](https://solved.ac/problems/4764) | | **H** | Balanced Budget Initiative | `midatl/2004/checkbook` | `midatl/2004/MidAtlantic2004.pdf` | - | [4765](https://solved.ac/problems/4765) | ### Practice Session | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------------------- | :-------------------- | :-------------------------------- | :----: | :-------------------------------------: | | **P** | Practice Problem | - | `midatl/2004/Practice2004.pdf` | - | - | --- ## North American Mid-Atlantic Region (2005) - **Contest Slug:** `midatl` - **Year:** 2005 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/165) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------- | :---------------------- | :-------------------------------- | :----: | :-------------------------------------: | | **A** | Take Your Vitamins | `midatl/2005/vitamins` | `midatl/2005/MidAtlantic2005.pdf` | - | [4749](https://solved.ac/problems/4749) | | **B** | Packing Dominoes | `midatl/2005/dominoes` | `midatl/2005/MidAtlantic2005.pdf` | - | [4750](https://solved.ac/problems/4750) | | **C** | Extrusion | `midatl/2005/extrusion` | `midatl/2005/MidAtlantic2005.pdf` | - | [4751](https://solved.ac/problems/4751) | | **D** | Pasting Strings | `midatl/2005/change` | `midatl/2005/MidAtlantic2005.pdf` | - | [4752](https://solved.ac/problems/4752) | | **E** | Mobiles | `midatl/2005/mobiles` | `midatl/2005/MidAtlantic2005.pdf` | - | [4753](https://solved.ac/problems/4753) | | **F** | Context-Free Clock | `midatl/2005/clock` | `midatl/2005/MidAtlantic2005.pdf` | - | [4754](https://solved.ac/problems/4754) | | **G** | Right-Hand Rule | `midatl/2005/righthand` | `midatl/2005/MidAtlantic2005.pdf` | - | [4755](https://solved.ac/problems/4755) | | **H** | WordStack | `midatl/2005/wordstack` | `midatl/2005/MidAtlantic2005.pdf` | - | [4756](https://solved.ac/problems/4756) | ### Practice Session | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------- | :---------------------- | :-------------------------------- | :----: | :-------------------------------------: | | **P** | Practice Problem | - | `midatl/2005/Practice2005.pdf` | - | - | --- ## North American Mid-Atlantic Region (2006) - **Contest Slug:** `midatl` - **Year:** 2006 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/164) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------- | :------------------------ | :-------------------------------- | :----: | :---------------------------------------: | | **A** | Permutation Recovery | `midatl/2006/permutation` | `midatl/2006/MidAtlantic2006.pdf` | - | [1849](https://solved.ac/problems/1849) | | **B** | Crosswords Insider | `midatl/2006/crosswords` | `midatl/2006/MidAtlantic2006.pdf` | - | [4742](https://solved.ac/problems/4742) | | **C** | Doors and Penguins | `midatl/2006/doors` | `midatl/2006/MidAtlantic2006.pdf` | - | [4743](https://solved.ac/problems/4743) | | **D** | Gypsy Moths | `midatl/2006/gypsymoths` | `midatl/2006/MidAtlantic2006.pdf` | - | [4744](https://solved.ac/problems/4744) | | **E** | Marbles in Three Baskets | `midatl/2006/marbles` | `midatl/2006/MidAtlantic2006.pdf` | - | [4745](https://solved.ac/problems/4745) | | **F** | Generic Units Conversion | `midatl/2006/convert` | `midatl/2006/MidAtlantic2006.pdf` | - | [4746](https://solved.ac/problems/4746) | | **G** | Zoned Out | `midatl/2006/zonedout` | `midatl/2006/MidAtlantic2006.pdf` | - | [4747](https://solved.ac/problems/4747) | | **H** | Shrew-ology | `midatl/2006/shrews` | `midatl/2006/MidAtlantic2006.pdf` | - | [4748](https://solved.ac/problems/4748) | ### Practice Session | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------- | :------------------------ | :-------------------------------- | :----: | :-------------------------------------: | | **P** | Practice Problem | - | `midatl/2006/Practice2006.pdf` | - | - | --- ## North American Mid-Atlantic Region (2007) - **Contest Slug:** `midatl` - **Year:** 2007 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/163) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------ | :---------------- | :-------------------------------- | :----: | :---------------------------------------: | | **A** | First Composed, Then Transposed | - | `midatl/2007/MidAtlantic2007.pdf` | - | [4732](https://solved.ac/problems/4732) | | **B** | Mobiles Alabama | - | `midatl/2007/MidAtlantic2007.pdf` | - | [4733](https://solved.ac/problems/4733) | | **C** | Out of Sight | - | `midatl/2007/MidAtlantic2007.pdf` | - | [4734](https://solved.ac/problems/4734) | | **D** | Witness Redaction Plan | - | `midatl/2007/MidAtlantic2007.pdf` | - | [4735](https://solved.ac/problems/4735) | | **E** | Safety in Alchemy | - | `midatl/2007/MidAtlantic2007.pdf` | - | [4736](https://solved.ac/problems/4736) | | **F** | Potholes | - | `midatl/2007/MidAtlantic2007.pdf` | - | [4737](https://solved.ac/problems/4737) | | **G** | Bulls and Cows | - | `midatl/2007/MidAtlantic2007.pdf` | - | [4738](https://solved.ac/problems/4738) | | **H** | The Turn of the Shrew | - | `midatl/2007/MidAtlantic2007.pdf` | - | [4739](https://solved.ac/problems/4739) | ### Practice Session | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------ | :---------------- | :-------------------------------- | :----: | :-------------------------------------: | | **P** | Practice Problem | - | `midatl/2007/Practice2007.pdf` | - | - | --- ## North American Mid-Atlantic Region (2008) - **Contest Slug:** `midatl` - **Year:** 2008 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/162) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------------------- | :-------------------------- | :-------------------------------- | :----: | :-------------------------------------: | | **A** | Close Enough Computations | `midatl/2008/A-close` | `midatl/2008/MidAtlantic2008.pdf` | - | [4727](https://solved.ac/problems/4727) | | **B** | Soar | `midatl/2008/B-eyesore` | `midatl/2008/MidAtlantic2008.pdf` | - | [4728](https://solved.ac/problems/4728) | | **C** | Trie, Trie Again | `midatl/2008/C-trie` | `midatl/2008/MidAtlantic2008.pdf` | - | [4729](https://solved.ac/problems/4729) | | **D** | Lawrence of Arabia | `midatl/2008/D-arabia` | `midatl/2008/MidAtlantic2008.pdf` | - | [4115](https://solved.ac/problems/4115) | | **E** | Series / Parallel Resistor Circuits | `midatl/2008/E-resist` | `midatl/2008/MidAtlantic2008.pdf` | - | [4113](https://solved.ac/problems/4113) | | **F** | Combination Lock | `midatl/2008/F-combination` | `midatl/2008/MidAtlantic2008.pdf` | - | [4117](https://solved.ac/problems/4117) | | **G** | Stems Sell | `midatl/2008/G-stems` | `midatl/2008/MidAtlantic2008.pdf` | - | [4730](https://solved.ac/problems/4730) | | **H** | Signal Strength | `midatl/2008/H-signal` | `midatl/2008/MidAtlantic2008.pdf` | - | [4731](https://solved.ac/problems/4731) | ### Practice Session | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------------------- | :-------------------------- | :-------------------------------- | :----: | :-------------------------------------: | | **P** | Practice Problem | - | `midatl/2008/Practice2008.pdf` | - | - | --- ## North American Mid-Atlantic Region (2009) - **Contest Slug:** `midatl` - **Year:** 2009 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/161) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------- | :---------------------- | :-------------------------------- | :----: | :---------------------------------------: | | **A** | Euclid | `midatl/2009/euclid` | `midatl/2009/MidAtlantic2009.pdf` | - | [4105](https://solved.ac/problems/4105) | | **B** | Block Game | `midatl/2009/blockgame` | `midatl/2009/MidAtlantic2009.pdf` | - | [4104](https://solved.ac/problems/4104) | | **C** | Parlay Wagering | `midatl/2009/parlay` | `midatl/2009/MidAtlantic2009.pdf` | - | [4723](https://solved.ac/problems/4723) | | **D** | The Ninja Way | `midatl/2009/ninja` | `midatl/2009/MidAtlantic2009.pdf` | - | [4109](https://solved.ac/problems/4109) | | **E** | Extended Manhattan Distance | `midatl/2009/manhattan` | `midatl/2009/MidAtlantic2009.pdf` | - | [4724](https://solved.ac/problems/4724) | | **F** | Off the Wall | `midatl/2009/pool` | `midatl/2009/MidAtlantic2009.pdf` | - | [4110](https://solved.ac/problems/4110) | | **G** | Stringer | `midatl/2009/stringer` | `midatl/2009/MidAtlantic2009.pdf` | - | [4725](https://solved.ac/problems/4725) | | **H** | Word ladder | `midatl/2009/wordchain` | `midatl/2009/MidAtlantic2009.pdf` | - | [4726](https://solved.ac/problems/4726) | ### Practice Session | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------- | :---------------------- | :-------------------------------- | :----: | :-------------------------------------: | | **P** | Practice Problem | - | `midatl/2009/Practice2009.pdf` | - | - | --- ## North American Mid-Atlantic Region (2010) - **Contest Slug:** `midatl` - **Year:** 2010 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/160) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------- | :---------------------------- | :-------------------------------- | :----: | :-------------------------------------: | | **A** | Palindrometer | `midatl/2010/A_odometer` | `midatl/2010/MidAtlantic2010.pdf` | - | [4096](https://solved.ac/problems/4096) | | **B** | Balloons | `midatl/2010/B_balloons` | `midatl/2010/MidAtlantic2010.pdf` | - | [4716](https://solved.ac/problems/4716) | | **C** | Selling Cells | `midatl/2010/C_cells` | `midatl/2010/MidAtlantic2010.pdf` | - | [4717](https://solved.ac/problems/4717) | | **D** | Not One Bit More | `midatl/2010/D_bitcounting` | `midatl/2010/MidAtlantic2010.pdf` | - | [4718](https://solved.ac/problems/4718) | | **E** | Abstract Extract | `midatl/2010/E_abstract` | `midatl/2010/MidAtlantic2010.pdf` | - | [4719](https://solved.ac/problems/4719) | | **F** | Roller Coaster | `midatl/2010/F_rollercoaster` | `midatl/2010/MidAtlantic2010.pdf` | - | [4720](https://solved.ac/problems/4720) | | **G** | Spy Cam | `midatl/2010/G_spycam` | `midatl/2010/MidAtlantic2010.pdf` | - | [4721](https://solved.ac/problems/4721) | | **H** | Underground Cables | `midatl/2010/H_underground` | `midatl/2010/MidAtlantic2010.pdf` | - | [4722](https://solved.ac/problems/4722) | ### Practice Session | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------- | :---------------------------- | :-------------------------------- | :----: | :-------------------------------------: | | **P** | Practice Problem | - | `midatl/2010/Practice2010.pdf` | - | - | --- ## North American Mid-Atlantic Region (2011) - **Contest Slug:** `midatl` - **Year:** 2011 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/159) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------------- | :---------------------- | :-------------------------------- | :----: | :-------------------------------------: | | **A** | A Most Ingenious Pair a' Twins | - | `midatl/2011/MidAtlantic2011.pdf` | - | [4706](https://solved.ac/problems/4706) | | **B** | Raggedy, Raggedy | - | `midatl/2011/MidAtlantic2011.pdf` | - | [4707](https://solved.ac/problems/4707) | | **C** | AAAA | - | `midatl/2011/MidAtlantic2011.pdf` | - | [4708](https://solved.ac/problems/4708) | | **D** | Thunk and Plunk | - | `midatl/2011/MidAtlantic2011.pdf` | - | [4709](https://solved.ac/problems/4709) | | **E** | Losers Are Winners | - | `midatl/2011/MidAtlantic2011.pdf` | - | [4710](https://solved.ac/problems/4710) | | **F** | Line of Sight | - | `midatl/2011/MidAtlantic2011.pdf` | - | [4711](https://solved.ac/problems/4711) | | **G** | Stained Glass | - | `midatl/2011/MidAtlantic2011.pdf` | - | [4712](https://solved.ac/problems/4712) | | **H** | Road Rally | `midatl/2011/roadrally` | `midatl/2011/MidAtlantic2011.pdf` | - | [4713](https://solved.ac/problems/4713) | ### Practice Session | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------------- | :---------------------- | :-------------------------------- | :----: | :-------------------------------------: | | **P** | Practice Problem | - | `midatl/2011/Practice2011.pdf` | - | - | --- ## North American Mid-Atlantic Region (2012) - **Contest Slug:** `midatl` - **Year:** 2012 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/158) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------- | :-------------------------------- | :-------------------------------- | :----: | :---------------------------------------: | | **A** | Fifty Coats of Gray | `midatl/2012/PaintMe` | `midatl/2012/MidAtlantic2012.pdf` | - | [4697](https://solved.ac/problems/4697) | | **B** | Component Testing | `midatl/2012/ComponentTesting` | `midatl/2012/MidAtlantic2012.pdf` | - | [4698](https://solved.ac/problems/4698) | | **C** | Collision Detection | `midatl/2012/CollisionDetection` | `midatl/2012/MidAtlantic2012.pdf` | - | [4699](https://solved.ac/problems/4699) | | **D** | The Dueling Philosophers Problem | `midatl/2012/DuelingPhilosophers` | `midatl/2012/MidAtlantic2012.pdf` | - | [4700](https://solved.ac/problems/4700) | | **E** | Party Games | `midatl/2012/partyGames` | `midatl/2012/MidAtlantic2012.pdf` | - | [4701](https://solved.ac/problems/4701) | | **F** | Funhouse | `midatl/2012/FunHouse` | `midatl/2012/MidAtlantic2012.pdf` | - | [4702](https://solved.ac/problems/4702) | | **G** | A Terribly Grimm Problem | `midatl/2012/Grimm` | `midatl/2012/MidAtlantic2012.pdf` | - | [4703](https://solved.ac/problems/4703) | | **H** | Tsunami | `midatl/2012/Tsunami` | `midatl/2012/MidAtlantic2012.pdf` | - | [4704](https://solved.ac/problems/4704) | ### Practice Session | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------- | :-------------------------------- | :-------------------------------- | :----: | :-------------------------------------: | | **P** | Practice Problem | - | `midatl/2012/Practice2012.pdf` | - | - | --- ## North American Mid-Atlantic Region (2014) - **Contest Slug:** `midatl` - **Year:** 2014 ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------- | :------------------------ | :----------------------------- | :----: | :-------: | | **A** | Hy-phe-na-tion Rulez | `midatl/2014/Hyphenation` | `midatl/2014/Handouts2014.pdf` | - | - | | **B** | A Stable Relationship | `midatl/2014/3DPrinter` | `midatl/2014/Handouts2014.pdf` | - | - | | **C** | All Things Being Equal | `midatl/2014/BeingEqual` | `midatl/2014/Handouts2014.pdf` | - | - | | **D** | Everything in Excess! | `midatl/2014/Excess` | `midatl/2014/Handouts2014.pdf` | - | - | | **E** | Not Sew Difficult | `midatl/2014/Sewing` | `midatl/2014/Handouts2014.pdf` | - | - | | **F** | Tight Knight | `midatl/2014/Knight` | `midatl/2014/Handouts2014.pdf` | - | - | | **G** | Stealth | `midatl/2014/Stealth` | `midatl/2014/Handouts2014.pdf` | - | - | | **H** | Verti-Words | `midatl/2014/Vertiwords` | `midatl/2014/Handouts2014.pdf` | - | - | ### Practice Session | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------- | :------------------------ | :----------------------------- | :----: | :-------: | | **P** | Practice Problem | - | `midatl/2014/Practice2014.pdf` | - | - | --- ## North American Mid-Atlantic Region (2015) - **Contest Slug:** `midatl` - **Year:** 2015 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4244) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------------------ | :--------------------------- | :----------------------------- | :----: | :---------------------------------------: | | **A** | Positive Con Sequences | `midatl/2015/Sequences` | `midatl/2015/Handouts2015.pdf` | - | [11517](https://solved.ac/problems/11517) | | **B** | Refract Facts | `midatl/2015/Refract` | `midatl/2015/Handouts2015.pdf` | - | [11514](https://solved.ac/problems/11514) | | **C** | Hounded by Indecision | `midatl/2015/Hounded` | `midatl/2015/Handouts2015.pdf` | - | [11519](https://solved.ac/problems/11519) | | **D** | Avoiding an Arrrgument | `midatl/2015/Arrrgument` | `midatl/2015/Handouts2015.pdf` | - | [32010](https://solved.ac/problems/32010) | | **E** | Kinfolk | `midatl/2015/Kinfolk` | `midatl/2015/Handouts2015.pdf` | - | [11513](https://solved.ac/problems/11513) | | **F** | Of the Children | `midatl/2015/OfTheChildren` | `midatl/2015/Handouts2015.pdf` | - | [32011](https://solved.ac/problems/32011) | | **G** | Talking About Numbers | `midatl/2015/TalkingNumbers` | `midatl/2015/Handouts2015.pdf` | - | [32012](https://solved.ac/problems/32012) | | **H** | The Scheming Gardener | `midatl/2015/Gardener` | `midatl/2015/Handouts2015.pdf` | - | [32013](https://solved.ac/problems/32013) | ### Practice Session | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------------------ | :--------------------------- | :----------------------------- | :----: | :---------------------------------------: | | **C** | gcc -O2 -std=gnu99 -static yourFileName -lm | - | `midatl/2015/Practice2015.pdf` | - | - | --- ## North American Mid-Atlantic Region (2016) - **Contest Slug:** `midatl` - **Year:** 2016 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2016%20Mid-Atlantic%20Regional) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4245) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------------------ | :--------------------------- | :-------------------------------- | :----: | :---------------------------------------: | | **A** | Periodic Strings | `midatl/2016/PeriodicString` | `midatl/2016/MidAtlantic2016.pdf` | - | [13748](https://solved.ac/problems/13748) | | **B** | Around and Around We Go | `midatl/2016/Around` | `midatl/2016/MidAtlantic2016.pdf` | - | [13736](https://solved.ac/problems/13736) | | **C** | Buggy Robot | `midatl/2016/BuggyRobot` | `midatl/2016/MidAtlantic2016.pdf` | - | [13734](https://solved.ac/problems/13734) | | **D** | Enclosure Area | `midatl/2016/Enclosure` | `midatl/2016/MidAtlantic2016.pdf` | - | [13743](https://solved.ac/problems/13743) | | **E** | Toys and Triangles | `midatl/2016/Toy` | `midatl/2016/MidAtlantic2016.pdf` | - | [13735](https://solved.ac/problems/13735) | | **F** | Islands | `midatl/2016/Islands` | `midatl/2016/MidAtlantic2016.pdf` | - | [13746](https://solved.ac/problems/13746) | | **G** | Ghostbusters 2 | `midatl/2016/Ghostbusters` | `midatl/2016/MidAtlantic2016.pdf` | - | [13738](https://solved.ac/problems/13738) | | **H** | Painting the Floodwall | `midatl/2016/Paint` | `midatl/2016/MidAtlantic2016.pdf` | - | [32014](https://solved.ac/problems/32014) | ### Practice Session | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------------------ | :--------------------------- | :-------------------------------- | :----: | :---------------------------------------: | | **C** | gcc -O2 -std=gnu99 -static yourFileName -lm | - | `midatl/2016/Practice2016.pdf` | - | - | --- ## North American Mid-Atlantic Region (2017) - **Contest Slug:** `midatl` - **Year:** 2017 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2017%20ICPC%20Mid-Atlantic%20Regional%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4246) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------- | :----------------------------- | :----------------------------- | :---------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Star Arrangements | `midatl/2017/stararrangements` | `midatl/2017/Handouts2017.pdf` | [stararrangements](https://open.kattis.com/problems/stararrangements) | [15121](https://solved.ac/problems/15121) | | **B** | Security Badge | `midatl/2017/securitybadge` | `midatl/2017/Handouts2017.pdf` | [securitybadge](https://open.kattis.com/problems/securitybadge) | [15110](https://solved.ac/problems/15110) | | **C** | Purple Rain | `midatl/2017/purplerain` | `midatl/2017/Handouts2017.pdf` | [purplerain](https://open.kattis.com/problems/purplerain) | [15119](https://solved.ac/problems/15119) | | **D** | Avoiding Airports | `midatl/2017/avoidingairports` | `midatl/2017/Handouts2017.pdf` | [avoidingairports](https://open.kattis.com/problems/avoidingairports) | [15111](https://solved.ac/problems/15111) | | **E** | Rainbow Roads | `midatl/2017/rainbowroads` | `midatl/2017/Handouts2017.pdf` | [rainbowroads](https://open.kattis.com/problems/rainbowroads) | [15107](https://solved.ac/problems/15107) | | **F** | Spinning Up Palindromes | `midatl/2017/spinningup` | `midatl/2017/Handouts2017.pdf` | [spinningup](https://open.kattis.com/problems/spinningup) | [15114](https://solved.ac/problems/15114) | | **G** | Long Long Strings | `midatl/2017/longlongstrings` | `midatl/2017/Handouts2017.pdf` | [longlongstrings](https://open.kattis.com/problems/longlongstrings) | [15112](https://solved.ac/problems/15112) | | **H** | Haiku Formatting | `midatl/2017/haikuformatting` | `midatl/2017/Handouts2017.pdf` | [haikuformatting](https://open.kattis.com/problems/haikuformatting) | [32015](https://solved.ac/problems/32015) | ### Practice Session | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------- | :----------------------------- | :----------------------------- | :----: | :---------------------------------------: | | **A** | Roaming Romans | `midatl/2017/romans` | `midatl/2017/Practice2017.pdf` | - | - | --- ## North American Mid-Atlantic Region (2018) - **Contest Slug:** `midatl` - **Year:** 2018 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2018%20ICPC%20Mid-Atlantic%20Regional%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4247) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------- | :--------------------------------- | :----------------------------- | :---------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Lost is Close to Lose | `midatl/2018/lostisclosetolose` | `midatl/2018/Handouts2018.pdf` | [lostisclosetolose](https://open.kattis.com/problems/lostisclosetolose) | [32016](https://solved.ac/problems/32016) | | **B** | Orphan Backups | `midatl/2018/orphanbackups` | `midatl/2018/Handouts2018.pdf` | [orphanbackups](https://open.kattis.com/problems/orphanbackups) | [32017](https://solved.ac/problems/32017) | | **C** | Collusion on Two Wheels | `midatl/2018/collusionontwowheels` | `midatl/2018/Handouts2018.pdf` | [collusionontwowheels](https://open.kattis.com/problems/collusionontwowheels) | [32018](https://solved.ac/problems/32018) | | **D** | Find Poly | `midatl/2018/findpoly` | `midatl/2018/Handouts2018.pdf` | [findpoly](https://open.kattis.com/problems/findpoly) | [32019](https://solved.ac/problems/32019) | | **E** | Neutral Ground | `midatl/2018/neutralground` | `midatl/2018/Handouts2018.pdf` | [neutralground](https://open.kattis.com/problems/neutralground) | [32020](https://solved.ac/problems/32020) | | **F** | Picking Up the Dice | `midatl/2018/pickingupthedice` | `midatl/2018/Handouts2018.pdf` | [pickingupthedice](https://open.kattis.com/problems/pickingupthedice) | [32021](https://solved.ac/problems/32021) | | **G** | Playing the Slots | `midatl/2018/playingtheslots` | `midatl/2018/Handouts2018.pdf` | [playingtheslots](https://open.kattis.com/problems/playingtheslots) | [32022](https://solved.ac/problems/32022) | | **H** | Tightly Packed | `midatl/2018/tightlypacked` | `midatl/2018/Handouts2018.pdf` | [tightlypacked](https://open.kattis.com/problems/tightlypacked) | [32023](https://solved.ac/problems/32023) | ### Practice Session | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------- | :--------------------------------- | :----------------------------- | :---------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Roaming Romans | `midatl/2018/romans` | `midatl/2018/Practice2018.pdf` | - | - | --- ## North American Mid-Atlantic Region (2022) - **Contest Slug:** `midatl` - **Year:** 2022 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2022%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2025%2C%202023%29) - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/3506) | [Div 2](https://solved.ac/problems/archive/contest/3509) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :------------------------------------- | :----------------------- | :-----------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Fading Wind | `midatl/2022/fadingwind` | `midatl/2022/scdiv1.pdf` | [fadingwind](https://open.kattis.com/problems/fadingwind) | [27579](https://solved.ac/problems/27579) | | **B** | Creative Accounting | `midatl/2022/creativeaccounting` | `midatl/2022/scdiv1.pdf` | [creativeaccounting](https://open.kattis.com/problems/creativeaccounting) | [27573](https://solved.ac/problems/27573) | | **C** | Chocolate Chip Fabrication | `midatl/2022/chocolatechipfabrication` | `midatl/2022/scdiv1.pdf` | [chocolatechipfabrication](https://open.kattis.com/problems/chocolatechipfabrication) | [27570](https://solved.ac/problems/27570) | | **D** | Counting Satellites | `midatl/2022/countingsatellites` | `midatl/2022/scdiv1.pdf` | [countingsatellites](https://open.kattis.com/problems/countingsatellites) | [27572](https://solved.ac/problems/27572) | | **E** | Exponent Exchange | `midatl/2022/exponentexchange` | `midatl/2022/scdiv1.pdf` | [exponentexchange](https://open.kattis.com/problems/exponentexchange) | [27578](https://solved.ac/problems/27578) | | **F** | Family Visits | `midatl/2022/familyvisits` | `midatl/2022/scdiv1.pdf` | [familyvisits](https://open.kattis.com/problems/familyvisits) | [27580](https://solved.ac/problems/27580) | | **G** | Eroding Pillars | `midatl/2022/erodingpillars` | `midatl/2022/scdiv1.pdf` | [erodingpillars](https://open.kattis.com/problems/erodingpillars) | [27576](https://solved.ac/problems/27576) | | **H** | Triangle Containment | `midatl/2022/trianglecontainment` | `midatl/2022/scdiv1.pdf` | [trianglecontainment](https://open.kattis.com/problems/trianglecontainment) | [27592](https://solved.ac/problems/27592) | | **I** | Color Tubes | `midatl/2022/colortubes` | `midatl/2022/scdiv1.pdf` | [colortubes](https://open.kattis.com/problems/colortubes) | [27571](https://solved.ac/problems/27571) | | **J** | Three Dice | `midatl/2022/threedice` | `midatl/2022/scdiv1.pdf` | [threedice](https://open.kattis.com/problems/threedice) | [27591](https://solved.ac/problems/27591) | | **K** | Lone Knight | `midatl/2022/loneknight` | `midatl/2022/scdiv1.pdf` | [loneknight](https://open.kattis.com/problems/loneknight) | [27585](https://solved.ac/problems/27585) | | **L** | Branch Manager | `midatl/2022/branchmanager` | `midatl/2022/scdiv1.pdf` | [branchmanager](https://open.kattis.com/problems/branchmanager) | [27568](https://solved.ac/problems/27568) | | **M** | Alchemy | `midatl/2022/alchemy` | `midatl/2022/scdiv1.pdf` | [alchemy2](https://open.kattis.com/problems/alchemy2) | [27565](https://solved.ac/problems/27565) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :------------------------------------- | :----------------------- | :-----------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Blueberry Waffle | `midatl/2022/blueberrywaffle` | - | [blueberrywaffle](https://open.kattis.com/problems/blueberrywaffle) | [27566](https://solved.ac/problems/27566) | | **B** | Fading Wind | `midatl/2022/fadingwind` | - | [fadingwind](https://open.kattis.com/problems/fadingwind) | [27579](https://solved.ac/problems/27579) | | **C** | Creative Accounting | `midatl/2022/creativeaccounting` | - | [creativeaccounting](https://open.kattis.com/problems/creativeaccounting) | [27573](https://solved.ac/problems/27573) | | **D** | Chocolate Chip Fabrication | `midatl/2022/chocolatechipfabrication` | - | [chocolatechipfabrication](https://open.kattis.com/problems/chocolatechipfabrication) | [27570](https://solved.ac/problems/27570) | | **E** | Everything Is A Nail | `midatl/2022/everythingisanail` | - | [everythingisanail](https://open.kattis.com/problems/everythingisanail) | [27577](https://solved.ac/problems/27577) | | **F** | Family Visits | `midatl/2022/familyvisits` | - | [familyvisits](https://open.kattis.com/problems/familyvisits) | [27580](https://solved.ac/problems/27580) | | **G** | Streets Ahead | `midatl/2022/streetsahead` | - | [streetsahead](https://open.kattis.com/problems/streetsahead) | [27589](https://solved.ac/problems/27589) | | **H** | Sun and Moon | `midatl/2022/sunandmoon` | - | [sunandmoon](https://open.kattis.com/problems/sunandmoon) | [27590](https://solved.ac/problems/27590) | | **I** | Color Tubes | `midatl/2022/colortubes` | - | [colortubes](https://open.kattis.com/problems/colortubes) | [27571](https://solved.ac/problems/27571) | | **J** | Three Dice | `midatl/2022/threedice` | - | [threedice](https://open.kattis.com/problems/threedice) | [27591](https://solved.ac/problems/27591) | | **K** | Food Processor | `midatl/2022/foodprocessor` | - | [foodprocessor](https://open.kattis.com/problems/foodprocessor) | [27581](https://solved.ac/problems/27581) | | **L** | Branch Manager | `midatl/2022/branchmanager` | - | [branchmanager](https://open.kattis.com/problems/branchmanager) | [27568](https://solved.ac/problems/27568) | | **M** | Alchemy | `midatl/2022/alchemy` | - | [alchemy2](https://open.kattis.com/problems/alchemy2) | [27565](https://solved.ac/problems/27565) | --- ## North American Mid-Atlantic Region (2023) - **Contest Slug:** `midatl` - **Year:** 2023 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2023%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2024%2C%202024%29) - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/4161) | [Div 2](https://solved.ac/problems/archive/contest/4162) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------ | :------------------------------------------ | :-------------------------- | :---------------------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | ABC String | `midatl/2023/abcstring` | `midatl/2023/seusad1-1.pdf` | [abcstring](https://open.kattis.com/problems/abcstring) | [31506](https://solved.ac/problems/31506) | | **B** | Balanced Tree Path | `midatl/2023/balancedtreepath` | `midatl/2023/seusad1-1.pdf` | [balancedtreepath](https://open.kattis.com/problems/balancedtreepath) | [31523](https://solved.ac/problems/31523) | | **C** | Cramming for Finals | `midatl/2023/crammingforfinals` | `midatl/2023/seusad1-1.pdf` | [crammingforfinals](https://open.kattis.com/problems/crammingforfinals) | [31509](https://solved.ac/problems/31509) | | **D** | Ordered Problem Set | `midatl/2023/orderedproblemset` | `midatl/2023/seusad1-1.pdf` | [orderedproblemset](https://open.kattis.com/problems/orderedproblemset) | [31522](https://solved.ac/problems/31522) | | **E** | Eccentric Excursion | `midatl/2023/eccentricexcursion` | `midatl/2023/seusad1-1.pdf` | [eccentricexcursion](https://open.kattis.com/problems/eccentricexcursion) | [31510](https://solved.ac/problems/31510) | | **F** | Matrix Fraud | `midatl/2023/matrixfraud` | `midatl/2023/seusad1-1.pdf` | [matrixfraud](https://open.kattis.com/problems/matrixfraud) | [31512](https://solved.ac/problems/31512) | | **G** | On-Call Team | `midatl/2023/oncallteam` | `midatl/2023/seusad1-1.pdf` | [oncallteam](https://open.kattis.com/problems/oncallteam) | [31513](https://solved.ac/problems/31513) | | **H** | Range Editing | `midatl/2023/rangeediting` | `midatl/2023/seusad1-1.pdf` | [rangeediting](https://open.kattis.com/problems/rangeediting) | [31514](https://solved.ac/problems/31514) | | **I** | Item Selection | `midatl/2023/itemselection` | `midatl/2023/seusad1-1.pdf` | [itemselection](https://open.kattis.com/problems/itemselection) | [31511](https://solved.ac/problems/31511) | | **J** | Sequence Guessing | `midatl/2023/sequenceguessing` | `midatl/2023/seusad1-1.pdf` | [sequenceguessing](https://open.kattis.com/problems/sequenceguessing) | [31516](https://solved.ac/problems/31516) | | **K** | Streets Behind | `midatl/2023/streetsbehind` | `midatl/2023/seusad1-1.pdf` | [streetsbehind](https://open.kattis.com/problems/streetsbehind) | [31525](https://solved.ac/problems/31525) | | **L** | Segment Drawing | `midatl/2023/segmentdrawing` | `midatl/2023/seusad1-1.pdf` | [segmentdrawing](https://open.kattis.com/problems/segmentdrawing) | [31515](https://solved.ac/problems/31515) | | **M** | Champernowne Verification | `midatl/2023/champernowneverification` | `midatl/2023/seusad1-1.pdf` | [champernowneverification](https://open.kattis.com/problems/champernowneverification) | [31520](https://solved.ac/problems/31520) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------ | :------------------------------------------ | :-------------------------- | :---------------------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | ABC String | `midatl/2023/abcstring` | `midatl/2023/seusad2-3.pdf` | [abcstring](https://open.kattis.com/problems/abcstring) | [31506](https://solved.ac/problems/31506) | | **B** | Balanced Tree Path | `midatl/2023/balancedtreepath` | `midatl/2023/seusad2-3.pdf` | [balancedtreepath](https://open.kattis.com/problems/balancedtreepath) | [31523](https://solved.ac/problems/31523) | | **C** | A Cappella Recording | `midatl/2023/acappellarecording` | `midatl/2023/seusad2-3.pdf` | [acappellarecording](https://open.kattis.com/problems/acappellarecording) | [31519](https://solved.ac/problems/31519) | | **D** | Ordered Problem Set | `midatl/2023/orderedproblemset` | `midatl/2023/seusad2-3.pdf` | [orderedproblemset](https://open.kattis.com/problems/orderedproblemset) | [31522](https://solved.ac/problems/31522) | | **E** | Acceptable Seating Arrangements | `midatl/2023/acceptableseatingarrangements` | `midatl/2023/seusad2-3.pdf` | [acceptableseatingarrangements](https://open.kattis.com/problems/acceptableseatingarrangements) | [31507](https://solved.ac/problems/31507) | | **F** | Four Die Rolls | `midatl/2023/fourdierolls` | `midatl/2023/seusad2-3.pdf` | [fourdierolls](https://open.kattis.com/problems/fourdierolls) | [31521](https://solved.ac/problems/31521) | | **G** | Rampant Growth | `midatl/2023/rampantgrowth` | `midatl/2023/seusad2-3.pdf` | [rampantgrowth](https://open.kattis.com/problems/rampantgrowth) | [31526](https://solved.ac/problems/31526) | | **H** | Triple Sevens | `midatl/2023/triplesevens` | `midatl/2023/seusad2-3.pdf` | [triplesevens](https://open.kattis.com/problems/triplesevens) | [31518](https://solved.ac/problems/31518) | | **I** | Item Selection | `midatl/2023/itemselection` | `midatl/2023/seusad2-3.pdf` | [itemselection](https://open.kattis.com/problems/itemselection) | [31511](https://solved.ac/problems/31511) | | **J** | Sequence Guessing | `midatl/2023/sequenceguessing` | `midatl/2023/seusad2-3.pdf` | [sequenceguessing](https://open.kattis.com/problems/sequenceguessing) | [31516](https://solved.ac/problems/31516) | | **K** | Streets Behind | `midatl/2023/streetsbehind` | `midatl/2023/seusad2-3.pdf` | [streetsbehind](https://open.kattis.com/problems/streetsbehind) | [31525](https://solved.ac/problems/31525) | | **L** | Training | `midatl/2023/training` | `midatl/2023/seusad2-3.pdf` | [training](https://open.kattis.com/problems/training) | [31517](https://solved.ac/problems/31517) | | **M** | Champernowne Verification | `midatl/2023/champernowneverification` | `midatl/2023/seusad2-3.pdf` | [champernowneverification](https://open.kattis.com/problems/champernowneverification) | [31520](https://solved.ac/problems/31520) | --- ## North American Mid-Atlantic Region (2024) - **Contest Slug:** `midatl` - **Year:** 2024 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2024%20ICPC%20South%20Central%2C%20South%20East%20and%20Mid%20Atlantic%20Regional%20%28November%2016%2C%202024%29) - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/4677) | [Div 2](https://solved.ac/problems/archive/contest/4678) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------- | :------------------------------------- | :-------------------------- | :-----------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Welcome Sign | `midatl/2024/welcomesign` | `midatl/2024/seusad1-2.pdf` | [welcomesign](https://open.kattis.com/problems/welcomesign) | [32841](https://solved.ac/problems/32841) | | **B** | Triangles of a Square | `midatl/2024/trianglesofasquare` | `midatl/2024/seusad1-2.pdf` | [trianglesofasquare](https://open.kattis.com/problems/trianglesofasquare) | [32842](https://solved.ac/problems/32842) | | **C** | City Bike | `midatl/2024/citybike` | `midatl/2024/seusad1-2.pdf` | [citybike](https://open.kattis.com/problems/citybike) | [32843](https://solved.ac/problems/32843) | | **D** | Duel of Cards | `midatl/2024/duelofcards` | `midatl/2024/seusad1-2.pdf` | [duelofcards](https://open.kattis.com/problems/duelofcards) | [32844](https://solved.ac/problems/32844) | | **E** | Elevated Rails | `midatl/2024/elevatedrails` | `midatl/2024/seusad1-2.pdf` | [elevatedrails](https://open.kattis.com/problems/elevatedrails) | [32845](https://solved.ac/problems/32845) | | **F** | Finding Keys | `midatl/2024/findingkeys` | `midatl/2024/seusad1-2.pdf` | [findingkeys](https://open.kattis.com/problems/findingkeys) | [32846](https://solved.ac/problems/32846) | | **G** | Intergalactic Team | `midatl/2024/intergalacticteam` | `midatl/2024/seusad1-2.pdf` | [intergalacticteam](https://open.kattis.com/problems/intergalacticteam) | [32847](https://solved.ac/problems/32847) | | **H** | Herb Mixing | `midatl/2024/herbmixing` | `midatl/2024/seusad1-2.pdf` | [herbmixing](https://open.kattis.com/problems/herbmixing) | [32848](https://solved.ac/problems/32848) | | **I** | Island Memories | `midatl/2024/islandmemories` | `midatl/2024/seusad1-2.pdf` | [islandmemories](https://open.kattis.com/problems/islandmemories) | [32849](https://solved.ac/problems/32849) | | **J** | Perfect Squares | `midatl/2024/perfectsquares` | `midatl/2024/seusad1-2.pdf` | [perfectsquares](https://open.kattis.com/problems/perfectsquares) | [32850](https://solved.ac/problems/32850) | | **K** | Optimized Cheating | `midatl/2024/optimizedcheating` | `midatl/2024/seusad1-2.pdf` | [optimizedcheating](https://open.kattis.com/problems/optimizedcheating) | [32851](https://solved.ac/problems/32851) | | **L** | Pianissimo | `midatl/2024/pianissimo` | `midatl/2024/seusad1-2.pdf` | [pianissimo](https://open.kattis.com/problems/pianissimo) | [32852](https://solved.ac/problems/32852) | | **M** | Virtual Reality Playspace | `midatl/2024/virtualrealityplayspace` | `midatl/2024/seusad1-2.pdf` | [vrplayspace](https://open.kattis.com/problems/vrplayspace) | [32853](https://solved.ac/problems/32853) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------- | :------------------------------------- | :-------------------------- | :-----------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Welcome Sign | `midatl/2024/welcomesign` | `midatl/2024/seusad2-4.pdf` | [welcomesign](https://open.kattis.com/problems/welcomesign) | [32841](https://solved.ac/problems/32841) | | **B** | Triangles of a Square | `midatl/2024/trianglesofasquare` | `midatl/2024/seusad2-4.pdf` | [trianglesofasquare](https://open.kattis.com/problems/trianglesofasquare) | [32842](https://solved.ac/problems/32842) | | **C** | Traffic Lights | `midatl/2024/trafficlights` | `midatl/2024/seusad2-4.pdf` | [trafficlights](https://open.kattis.com/problems/trafficlights) | [32854](https://solved.ac/problems/32854) | | **D** | Duel of Cards | `midatl/2024/duelofcards` | `midatl/2024/seusad2-4.pdf` | [duelofcards](https://open.kattis.com/problems/duelofcards) | [32844](https://solved.ac/problems/32844) | | **E** | Which One is Larger | `midatl/2024/whichoneislarger` | `midatl/2024/seusad2-4.pdf` | [whichoneislarger](https://open.kattis.com/problems/whichoneislarger) | [32855](https://solved.ac/problems/32855) | | **F** | Office Building | `midatl/2024/officebuilding` | `midatl/2024/seusad2-4.pdf` | [officebuilding](https://open.kattis.com/problems/officebuilding) | [32856](https://solved.ac/problems/32856) | | **G** | Intergalactic Team | `midatl/2024/intergalacticteam` | `midatl/2024/seusad2-4.pdf` | [intergalacticteam](https://open.kattis.com/problems/intergalacticteam) | [32847](https://solved.ac/problems/32847) | | **H** | Herb Mixing | `midatl/2024/herbmixing` | `midatl/2024/seusad2-4.pdf` | [herbmixing](https://open.kattis.com/problems/herbmixing) | [32848](https://solved.ac/problems/32848) | | **I** | Island Memories | `midatl/2024/islandmemories` | `midatl/2024/seusad2-4.pdf` | [islandmemories](https://open.kattis.com/problems/islandmemories) | [32849](https://solved.ac/problems/32849) | | **J** | Perfect Squares | `midatl/2024/perfectsquares` | `midatl/2024/seusad2-4.pdf` | [perfectsquares](https://open.kattis.com/problems/perfectsquares) | [32850](https://solved.ac/problems/32850) | | **K** | Optimized Cheating | `midatl/2024/optimizedcheating` | `midatl/2024/seusad2-4.pdf` | [optimizedcheating](https://open.kattis.com/problems/optimizedcheating) | [32851](https://solved.ac/problems/32851) | | **L** | Pianissimo | `midatl/2024/pianissimo` | `midatl/2024/seusad2-4.pdf` | [pianissimo](https://open.kattis.com/problems/pianissimo) | [32852](https://solved.ac/problems/32852) | | **M** | Memories of Passport Stamps | `midatl/2024/memoriesofpassportstamps` | `midatl/2024/seusad2-4.pdf` | [memoriesofpassportstamps](https://open.kattis.com/problems/memoriesofpassportstamps) | [32857](https://solved.ac/problems/32857) | --- ## North American Mid-Atlantic Region (2025) - **Contest Slug:** `midatl` - **Year:** 2025 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2025%20ICPC%20South%20Central%2C%20South%20East%20and%20Mid%20Atlantic%20Regional%20%28November%208%2C%202025%29) - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/4683) | [Div 2](https://solved.ac/problems/archive/contest/4684) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------------- | :-------------------------------------- | :-------------------------- | :-------------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Orchard Fence | `midatl/2025/orchardfence` | `midatl/2025/seusad1-3.pdf` | [orchardfence](https://open.kattis.com/problems/orchardfence) | [35354](https://solved.ac/problems/35354) | | **B** | Blind Bottles | `midatl/2025/blindbottles` | `midatl/2025/seusad1-3.pdf` | [blindbottles](https://open.kattis.com/problems/blindbottles) | [35355](https://solved.ac/problems/35355) | | **C** | One Way Only | `midatl/2025/onewayonly` | `midatl/2025/seusad1-3.pdf` | [onewayonly](https://open.kattis.com/problems/onewayonly) | [35356](https://solved.ac/problems/35356) | | **D** | GUID Generator | `midatl/2025/guidgenerator` | `midatl/2025/seusad1-3.pdf` | [guidgenerator](https://open.kattis.com/problems/guidgenerator) | [35357](https://solved.ac/problems/35357) | | **E** | Photo Encoding | `midatl/2025/photoencoding` | `midatl/2025/seusad1-3.pdf` | [photoencoding](https://open.kattis.com/problems/photoencoding) | [35358](https://solved.ac/problems/35358) | | **F** | Meeting Free Fridays | `midatl/2025/meetingfreefridays` | `midatl/2025/seusad1-3.pdf` | [meetingfreefridays](https://open.kattis.com/problems/meetingfreefridays) | [35359](https://solved.ac/problems/35359) | | **G** | Galaxy Governance | `midatl/2025/galaxygovernance` | `midatl/2025/seusad1-3.pdf` | [galaxygovernance](https://open.kattis.com/problems/galaxygovernance) | [35360](https://solved.ac/problems/35360) | | **H** | Rows of Stars | `midatl/2025/rowsofstars` | `midatl/2025/seusad1-3.pdf` | [rowsofstars](https://open.kattis.com/problems/rowsofstars) | [35361](https://solved.ac/problems/35361) | | **I** | Manhattan Interference | `midatl/2025/manhattaninterference` | `midatl/2025/seusad1-3.pdf` | [manhattaninterference](https://open.kattis.com/problems/manhattaninterference) | [35362](https://solved.ac/problems/35362) | | **J** | Game of Nines | `midatl/2025/gameofnines` | `midatl/2025/seusad1-3.pdf` | [gameofnines](https://open.kattis.com/problems/gameofnines) | [35363](https://solved.ac/problems/35363) | | **K** | Swap for Palindrome | `midatl/2025/swapforpalindrome` | `midatl/2025/seusad1-3.pdf` | [swapforpalindrome](https://open.kattis.com/problems/swapforpalindrome) | [35364](https://solved.ac/problems/35364) | | **L** | Tree Racing | `midatl/2025/treeracing` | `midatl/2025/seusad1-3.pdf` | [treeracing](https://open.kattis.com/problems/treeracing) | [35365](https://solved.ac/problems/35365) | | **M** | Much Room for Mushrooms | `midatl/2025/muchroomformushrooms` | `midatl/2025/seusad1-3.pdf` | [muchroomformushrooms](https://open.kattis.com/problems/muchroomformushrooms) | [35366](https://solved.ac/problems/35366) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------------- | :-------------------------------------- | :-------------------------- | :-------------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Snakey String | `midatl/2025/snakeystring` | `midatl/2025/scdiv2-1.pdf` | [snakeystring](https://open.kattis.com/problems/snakeystring) | [35367](https://solved.ac/problems/35367) | | **B** | Blind Bottles | `midatl/2025/blindbottles` | `midatl/2025/scdiv2-1.pdf` | [blindbottles](https://open.kattis.com/problems/blindbottles) | [35355](https://solved.ac/problems/35355) | | **C** | One Way Only | `midatl/2025/onewayonly` | `midatl/2025/scdiv2-1.pdf` | [onewayonly](https://open.kattis.com/problems/onewayonly) | [35356](https://solved.ac/problems/35356) | | **D** | GUID Generator | `midatl/2025/guidgenerator` | `midatl/2025/scdiv2-1.pdf` | [guidgenerator](https://open.kattis.com/problems/guidgenerator) | [35357](https://solved.ac/problems/35357) | | **E** | Photo Encoding | `midatl/2025/photoencoding` | `midatl/2025/scdiv2-1.pdf` | [photoencoding](https://open.kattis.com/problems/photoencoding) | [35358](https://solved.ac/problems/35358) | | **F** | Breakout | `midatl/2025/breakout` | `midatl/2025/scdiv2-1.pdf` | [breakout2](https://open.kattis.com/problems/breakout2) | [35368](https://solved.ac/problems/35368) | | **G** | Shinjuku Station | `midatl/2025/shinjukustation` | `midatl/2025/scdiv2-1.pdf` | [shinjukustation](https://open.kattis.com/problems/shinjukustation) | [35369](https://solved.ac/problems/35369) | | **H** | Memories of Passport Control | `midatl/2025/memoriesofpassportcontrol` | `midatl/2025/scdiv2-1.pdf` | [memoriesofpassportcontrol](https://open.kattis.com/problems/memoriesofpassportcontrol) | [35370](https://solved.ac/problems/35370) | | **I** | Inazuma Cube Device | `midatl/2025/inazumacubedevice` | `midatl/2025/scdiv2-1.pdf` | [inazumacubedevice](https://open.kattis.com/problems/inazumacubedevice) | [35371](https://solved.ac/problems/35371) | | **J** | Game of Nines | `midatl/2025/gameofnines` | `midatl/2025/scdiv2-1.pdf` | [gameofnines](https://open.kattis.com/problems/gameofnines) | [35363](https://solved.ac/problems/35363) | | **K** | Swap for Palindrome | `midatl/2025/swapforpalindrome` | `midatl/2025/scdiv2-1.pdf` | [swapforpalindrome](https://open.kattis.com/problems/swapforpalindrome) | [35364](https://solved.ac/problems/35364) | | **L** | Moonlit Time Machine | `midatl/2025/moonlittimemachine` | `midatl/2025/scdiv2-1.pdf` | [moonlittimemachine](https://open.kattis.com/problems/moonlittimemachine) | [35372](https://solved.ac/problems/35372) | | **M** | Much Room for Mushrooms | `midatl/2025/muchroomformushrooms` | `midatl/2025/scdiv2-1.pdf` | [muchroomformushrooms](https://open.kattis.com/problems/muchroomformushrooms) | [35366](https://solved.ac/problems/35366) | --- ## North America Championship (2020) - **Contest Slug:** `nac` - **Year:** 2020 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/North%20America%20Championship%202020) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2173) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------------- | :---------------- | :--------------------- | :-------------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Another Coin Weighing Puzzle | - | `nac/2020/nac2020.pdf` | [anothercoinweighingpuzzle](https://open.kattis.com/problems/anothercoinweighingpuzzle) | [18524](https://solved.ac/problems/18524) | | **B** | Mini Battleship | - | `nac/2020/nac2020.pdf` | [minibattleship](https://open.kattis.com/problems/minibattleship) | [18525](https://solved.ac/problems/18525) | | **C** | Bomas | `nac/2020/bomas` | `nac/2020/nac2020.pdf` | [bomas](https://open.kattis.com/problems/bomas) | [18526](https://solved.ac/problems/18526) | | **D** | All Kill | - | `nac/2020/nac2020.pdf` | [allkill](https://open.kattis.com/problems/allkill) | [18527](https://solved.ac/problems/18527) | | **E** | Grid Guardian | - | `nac/2020/nac2020.pdf` | [gridguardian](https://open.kattis.com/problems/gridguardian) | [18528](https://solved.ac/problems/18528) | | **F** | Hopscotch 50 | - | `nac/2020/nac2020.pdf` | [hopscotch50](https://open.kattis.com/problems/hopscotch50) | [18529](https://solved.ac/problems/18529) | | **G** | ICPC Camp | - | `nac/2020/nac2020.pdf` | [icpccamp](https://open.kattis.com/problems/icpccamp) | [18530](https://solved.ac/problems/18530) | | **H** | Letter Wheels | - | `nac/2020/nac2020.pdf` | [letterwheels](https://open.kattis.com/problems/letterwheels) | [18531](https://solved.ac/problems/18531) | | **I** | Editing Explosion | - | `nac/2020/nac2020.pdf` | [editingexplosion](https://open.kattis.com/problems/editingexplosion) | [18532](https://solved.ac/problems/18532) | | **J** | Lunchtime Name Recall | - | `nac/2020/nac2020.pdf` | [lunchtimenamerecall](https://open.kattis.com/problems/lunchtimenamerecall) | [18533](https://solved.ac/problems/18533) | | **K** | Rooted Subtrees | - | `nac/2020/nac2020.pdf` | [rootedsubtrees](https://open.kattis.com/problems/rootedsubtrees) | [18534](https://solved.ac/problems/18534) | | **L** | Tomb Raider | - | `nac/2020/nac2020.pdf` | [tombraider](https://open.kattis.com/problems/tombraider) | [18535](https://solved.ac/problems/18535) | --- ## North America Championship (2021) - **Contest Slug:** `nac` - **Year:** 2021 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/ICPC%20North%20America%20Championship%202021) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2744) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------- | :----------------- | :--------------------- | :---------------------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | AND Permutation | `nac/2021/a` | `nac/2021/nac2021.pdf` | [andpermutation](https://open.kattis.com/problems/andpermutation) | [22922](https://solved.ac/problems/22922) | | **B** | Apple Orchard | `nac/2021/data-66` | `nac/2021/nac2021.pdf` | [appleorchard](https://open.kattis.com/problems/appleorchard) | [22923](https://solved.ac/problems/22923) | | **C** | Cleaning Robot | `nac/2021/data-67` | `nac/2021/nac2021.pdf` | [cleaningrobot](https://open.kattis.com/problems/cleaningrobot) | [22924](https://solved.ac/problems/22924) | | **D** | Contest Construction | `nac/2021/data-68` | `nac/2021/nac2021.pdf` | [contestconstruction](https://open.kattis.com/problems/contestconstruction) | [22925](https://solved.ac/problems/22925) | | **E** | Ketek Counting | `nac/2021/data-69` | `nac/2021/nac2021.pdf` | [ketekcounting](https://open.kattis.com/problems/ketekcounting) | [22926](https://solved.ac/problems/22926) | | **F** | Mountainous Palindromic Subarray | `nac/2021/data-70` | `nac/2021/nac2021.pdf` | [mountainouspalindromesubarray](https://open.kattis.com/problems/mountainouspalindromesubarray) | [22927](https://solved.ac/problems/22927) | | **G** | Permutation CFG | `nac/2021/data-71` | `nac/2021/nac2021.pdf` | [permutationcfg](https://open.kattis.com/problems/permutationcfg) | [22928](https://solved.ac/problems/22928) | | **H** | Special Cycle | `nac/2021/data-72` | `nac/2021/nac2021.pdf` | [specialcycle](https://open.kattis.com/problems/specialcycle) | [22929](https://solved.ac/problems/22929) | | **I** | The King's Guards | `nac/2021/data-73` | `nac/2021/nac2021.pdf` | [thekingsguards](https://open.kattis.com/problems/thekingsguards) | [22930](https://solved.ac/problems/22930) | | **J** | The Paladin | `nac/2021/data-74` | `nac/2021/nac2021.pdf` | [thepaladin](https://open.kattis.com/problems/thepaladin) | [22931](https://solved.ac/problems/22931) | | **K** | Token Game | `nac/2021/data-75` | `nac/2021/nac2021.pdf` | [tokengame](https://open.kattis.com/problems/tokengame) | [22932](https://solved.ac/problems/22932) | | **L** | TraveLog | `nac/2021/data-76` | `nac/2021/nac2021.pdf` | [travelog](https://open.kattis.com/problems/travelog) | [22933](https://solved.ac/problems/22933) | | **M** | You be The Judge, Again | `nac/2021/data-77` | `nac/2021/nac2021.pdf` | [youbethejudge2](https://open.kattis.com/problems/youbethejudge2) | [22934](https://solved.ac/problems/22934) | --- ## North America Championship (2022) - **Contest Slug:** `nac` - **Year:** 2022 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2022%20ICPC%20North%20America%20Championship%20Practice) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/3126) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------- | :------------------ | :--------------------- | :---------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Contact Tracing | `nac/2022/data-102` | `nac/2022/nac2022.pdf` | [contacttracing2](https://open.kattis.com/problems/contacttracing2) | [25225](https://solved.ac/problems/25225) | | **B** | Cookie Cutter | `nac/2022/data-103` | `nac/2022/nac2022.pdf` | [cookiecutter2](https://open.kattis.com/problems/cookiecutter2) | [25226](https://solved.ac/problems/25226) | | **C** | Cram | `nac/2022/data-104` | `nac/2022/nac2022.pdf` | [cram](https://open.kattis.com/problems/cram) | [25227](https://solved.ac/problems/25227) | | **D** | Double Sort | `nac/2022/data-105` | `nac/2022/nac2022.pdf` | [doublesort](https://open.kattis.com/problems/doublesort) | [25228](https://solved.ac/problems/25228) | | **E** | GCD Harmony | `nac/2022/data-106` | `nac/2022/nac2022.pdf` | [gcdharmony](https://open.kattis.com/problems/gcdharmony) | [25229](https://solved.ac/problems/25229) | | **F** | Leaderboard Effect | `nac/2022/data-107` | `nac/2022/nac2022.pdf` | [leaderboardeffect](https://open.kattis.com/problems/leaderboardeffect) | [25230](https://solved.ac/problems/25230) | | **G** | Rafting Trip | `nac/2022/data-108` | `nac/2022/nac2022.pdf` | [raftingtrip](https://open.kattis.com/problems/raftingtrip) | [25231](https://solved.ac/problems/25231) | | **H** | Ranked Choice Spoiling | `nac/2022/data-109` | `nac/2022/nac2022.pdf` | [rankedchoicespoiling](https://open.kattis.com/problems/rankedchoicespoiling) | [25232](https://solved.ac/problems/25232) | | **I** | Reset | `nac/2022/data-110` | `nac/2022/nac2022.pdf` | [reset](https://open.kattis.com/problems/reset) | [25233](https://solved.ac/problems/25233) | | **J** | Tic Tac Toe Counting | `nac/2022/data-111` | `nac/2022/nac2022.pdf` | [tictactoecounting](https://open.kattis.com/problems/tictactoecounting) | [25234](https://solved.ac/problems/25234) | | **K** | Transparency | `nac/2022/data-112` | `nac/2022/nac2022.pdf` | [transparency](https://open.kattis.com/problems/transparency) | [25235](https://solved.ac/problems/25235) | | **L** | Triangular Logs | `nac/2022/data-113` | `nac/2022/nac2022.pdf` | [triangularlogs](https://open.kattis.com/problems/triangularlogs) | [25236](https://solved.ac/problems/25236) | | **M** | Word Ladder | `nac/2022/data-114` | `nac/2022/nac2022.pdf` | [wordladder3](https://open.kattis.com/problems/wordladder3) | [25237](https://solved.ac/problems/25237) | --- ## North America Championship (2023) - **Contest Slug:** `nac` - **Year:** 2023 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2023%20ICPC%20North%20America%20Championship) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/3594) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------------- | :----------------- | :---------------------- | :-------------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Allergen Testing | `nac/2023/data-13` | `nac/2023/problems.pdf` | [allergentesting](https://open.kattis.com/problems/allergentesting) | [28144](https://solved.ac/problems/28144) | | **B** | A Tree and Two Edges | `nac/2023/data-1` | `nac/2023/problems.pdf` | [atreeandtwoedges](https://open.kattis.com/problems/atreeandtwoedges) | [28145](https://solved.ac/problems/28145) | | **C** | Broken Minimum Spanning Tree | `nac/2023/data-2` | `nac/2023/problems.pdf` | [brokenminimumspanningtree](https://open.kattis.com/problems/brokenminimumspanningtree) | [28146](https://solved.ac/problems/28146) | | **D** | Fail Fast | `nac/2023/data-3` | `nac/2023/problems.pdf` | [failfast](https://open.kattis.com/problems/failfast) | [28147](https://solved.ac/problems/28147) | | **E** | First Last | `nac/2023/data-4` | `nac/2023/problems.pdf` | [firstlast](https://open.kattis.com/problems/firstlast) | [28148](https://solved.ac/problems/28148) | | **F** | Four Square | `nac/2023/data-5` | `nac/2023/problems.pdf` | [foursquare](https://open.kattis.com/problems/foursquare) | [28149](https://solved.ac/problems/28149) | | **G** | Frequent Flier | `nac/2023/data-6` | `nac/2023/problems.pdf` | [frequentflier](https://open.kattis.com/problems/frequentflier) | [28150](https://solved.ac/problems/28150) | | **H** | Game Show Elimination | `nac/2023/data-7` | `nac/2023/problems.pdf` | [gameshowelimination](https://open.kattis.com/problems/gameshowelimination) | [28151](https://solved.ac/problems/28151) | | **I** | Power of Divisors | `nac/2023/data-8` | `nac/2023/problems.pdf` | [powerofdivisors](https://open.kattis.com/problems/powerofdivisors) | [28152](https://solved.ac/problems/28152) | | **J** | Repetitive String Invention | `nac/2023/data-9` | `nac/2023/problems.pdf` | [repetitivestringinvention](https://open.kattis.com/problems/repetitivestringinvention) | [28153](https://solved.ac/problems/28153) | | **K** | Space Alignment | `nac/2023/data-10` | `nac/2023/problems.pdf` | [spacealignment](https://open.kattis.com/problems/spacealignment) | [28154](https://solved.ac/problems/28154) | | **L** | Splitting Pairs | `nac/2023/data-11` | `nac/2023/problems.pdf` | [splittingpairs](https://open.kattis.com/problems/splittingpairs) | [28155](https://solved.ac/problems/28155) | | **M** | Who Watches the Watchmen? | - | `nac/2023/problems.pdf` | [whowatchesthewatchmen](https://open.kattis.com/problems/whowatchesthewatchmen) | [28156](https://solved.ac/problems/28156) | --- ## North America Championship (2024) - **Contest Slug:** `nac` - **Year:** 2024 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2024%20ICPC%20North%20America%20Championship) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4226) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------ | :----------------- | :--------------------- | :-------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Arrested Development | `nac/2024/data-49` | `nac/2024/nac2024.pdf` | [arresteddevelopment](https://open.kattis.com/problems/arresteddevelopment) | [31949](https://solved.ac/problems/31949) | | **B** | Champernowne Substring | `nac/2024/data-50` | `nac/2024/nac2024.pdf` | [champernownesubstring](https://open.kattis.com/problems/champernownesubstring) | [31950](https://solved.ac/problems/31950) | | **C** | Comparator | `nac/2024/data-51` | `nac/2024/nac2024.pdf` | [comparator](https://open.kattis.com/problems/comparator) | [31951](https://solved.ac/problems/31951) | | **D** | Dihedral Group | `nac/2024/data-52` | `nac/2024/nac2024.pdf` | [dihedralgroup](https://open.kattis.com/problems/dihedralgroup) | [31952](https://solved.ac/problems/31952) | | **E** | House Deconstruction | `nac/2024/data-53` | `nac/2024/nac2024.pdf` | [housedeconstruction](https://open.kattis.com/problems/housedeconstruction) | [31953](https://solved.ac/problems/31953) | | **F** | Magic Bean | `nac/2024/data-54` | `nac/2024/nac2024.pdf` | [magicbeancube](https://open.kattis.com/problems/magicbeancube) | [31954](https://solved.ac/problems/31954) | | **G** | Manhattan Walk | `nac/2024/data-55` | `nac/2024/nac2024.pdf` | [manhattanwalk](https://open.kattis.com/problems/manhattanwalk) | [31955](https://solved.ac/problems/31955) | | **H** | MountainCraft | `nac/2024/data-56` | `nac/2024/nac2024.pdf` | [mountaincraft](https://open.kattis.com/problems/mountaincraft) | [31956](https://solved.ac/problems/31956) | | **I** | Not Another Constructive! | `nac/2024/data-57` | `nac/2024/nac2024.pdf` | [notanotherconstructive](https://open.kattis.com/problems/notanotherconstructive) | [31957](https://solved.ac/problems/31957) | | **J** | Passport Stamps | `nac/2024/data-58` | `nac/2024/nac2024.pdf` | [passportstamps](https://open.kattis.com/problems/passportstamps) | [31958](https://solved.ac/problems/31958) | | **K** | Shadow Line | `nac/2024/data-59` | `nac/2024/nac2024.pdf` | [shadowline](https://open.kattis.com/problems/shadowline) | [31959](https://solved.ac/problems/31959) | | **L** | Square of Triangles | `nac/2024/data-60` | `nac/2024/nac2024.pdf` | [squareoftriangles](https://open.kattis.com/problems/squareoftriangles) | [31960](https://solved.ac/problems/31960) | | **M** | Training, Round 2 | `nac/2024/data-61` | `nac/2024/nac2024.pdf` | [traininground2](https://open.kattis.com/problems/traininground2) | [31961](https://solved.ac/problems/31961) | --- ## North America Championship (2025) - **Contest Slug:** `nac` - **Year:** 2025 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2025%20ICPC%20North%20America%20Championship) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4543) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------ | :------------------ | :---------------------- | :-------------------------------------------------------------------: | :---------------------------------------: | | **A** | A Totient Quotient | `nac/2025/data-92` | `nac/2025/problems.pdf` | [atotientquotient](https://open.kattis.com/problems/atotientquotient) | [34265](https://solved.ac/problems/34265) | | **B** | Circle of Leaf | `nac/2025/data-93` | `nac/2025/problems.pdf` | [circleofleaf](https://open.kattis.com/problems/circleofleaf) | [34266](https://solved.ac/problems/34266) | | **C** | Entrapment | `nac/2025/data-94` | `nac/2025/problems.pdf` | [entrapment](https://open.kattis.com/problems/entrapment) | [34267](https://solved.ac/problems/34267) | | **D** | Geometry Rush | `nac/2025/data-95` | `nac/2025/problems.pdf` | [geometryrush](https://open.kattis.com/problems/geometryrush) | [34268](https://solved.ac/problems/34268) | | **E** | Humans vs AI | `nac/2025/data-96` | `nac/2025/problems.pdf` | [humansvsai](https://open.kattis.com/problems/humansvsai) | [34269](https://solved.ac/problems/34269) | | **F** | Mob Grinder | `nac/2025/data-97` | `nac/2025/problems.pdf` | [mobgrinder](https://open.kattis.com/problems/mobgrinder) | [34270](https://solved.ac/problems/34270) | | **G** | Most Scenic Cycle | `nac/2025/data-98` | `nac/2025/problems.pdf` | [mostsceniccycle](https://open.kattis.com/problems/mostsceniccycle) | [34271](https://solved.ac/problems/34271) | | **H** | Ornaments on a Tree | `nac/2025/data-99` | `nac/2025/problems.pdf` | [ornamentsonatree](https://open.kattis.com/problems/ornamentsonatree) | [34272](https://solved.ac/problems/34272) | | **I** | Polygon Partition | `nac/2025/data-100` | `nac/2025/problems.pdf` | [polygonpartition](https://open.kattis.com/problems/polygonpartition) | [34273](https://solved.ac/problems/34273) | | **J** | Popping Balloons | `nac/2025/data-101` | `nac/2025/problems.pdf` | [poppingballoons](https://open.kattis.com/problems/poppingballoons) | [34274](https://solved.ac/problems/34274) | | **K** | SLA Tomography | `nac/2025/data-102` | `nac/2025/problems.pdf` | [slatomography](https://open.kattis.com/problems/slatomography) | [34275](https://solved.ac/problems/34275) | | **L** | Solar Farm | `nac/2025/data-103` | `nac/2025/problems.pdf` | [solarfarm](https://open.kattis.com/problems/solarfarm) | [34276](https://solved.ac/problems/34276) | | **M** | This Is Sparta! | `nac/2025/data-104` | `nac/2025/problems.pdf` | [thisissparta](https://open.kattis.com/problems/thisissparta) | [34277](https://solved.ac/problems/34277) | --- ## North America Division Championship (2021) - **Contest Slug:** `nadc` - **Year:** 2021 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2021%20ICPC%20North%20America%20Division%20Championships) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2517) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------ | :--------------------------------------- | :--------------------------------- | :-------------------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Alien Microwave | `nadc/2021/alienmicrowave` | `nadc/2021/nadc2021-1.pdf` | [alienmicrowave](https://open.kattis.com/problems/alienmicrowave) | [21585](https://solved.ac/problems/21585) | | **B** | Another Substring Query Problem | `nadc/2021/anothersubstringqueryproblem` | `nadc/2021/nadc2021-1.pdf` | [anothersubstringqueryproblem](https://open.kattis.com/problems/anothersubstringqueryproblem) | [21586](https://solved.ac/problems/21586) | | **C** | Borders | `nadc/2021/borders` | `nadc/2021/nadc2021-1.pdf` | [borders](https://open.kattis.com/problems/borders) | [21587](https://solved.ac/problems/21587) | | **D** | Circle of Friends | `nadc/2021/circleoffriends` | `nadc/2021/nadc2021-1.pdf` | [circleoffriends](https://open.kattis.com/problems/circleoffriends) | [21588](https://solved.ac/problems/21588) | | **E** | Finding Polly | `nadc/2021/findingpolly` | `nadc/2021/nadc2021-1.pdf` | [findingpolly](https://open.kattis.com/problems/findingpolly) | [21589](https://solved.ac/problems/21589) | | **F** | Investigating Imposters | `nadc/2021/investigatingimposters` | `nadc/2021/nadc2021-1.pdf` | [investigatingimposters](https://open.kattis.com/problems/investigatingimposters) | [21590](https://solved.ac/problems/21590) | | **G** | Laptop Sticker | `nadc/2021/laptopsticker` | `nadc/2021/nadc2021-1.pdf` | [laptopsticker](https://open.kattis.com/problems/laptopsticker) | [21591](https://solved.ac/problems/21591) | | **H** | Longest Common Substring | `nadc/2021/longestcommonsubstring` | `nadc/2021/nadc2021-1.pdf` | [longestcommonsubstring](https://open.kattis.com/problems/longestcommonsubstring) | [21592](https://solved.ac/problems/21592) | | **I** | Simple Cron Spec | `nadc/2021/simplecronspec` | `nadc/2021/nadc2021-1.pdf` | [simplecronspec](https://open.kattis.com/problems/simplecronspec) | [21593](https://solved.ac/problems/21593) | | **J** | Surveillance | `nadc/2021/surveillance2` | `nadc/2021/nadc2021-1.pdf` | [surveillance2](https://open.kattis.com/problems/surveillance2) | [21594](https://solved.ac/problems/21594) | | **K** | Train Line | `nadc/2021/trainline` | `nadc/2021/nadc2021-1.pdf` | [trainline](https://open.kattis.com/problems/trainline) | [21595](https://solved.ac/problems/21595) | | **L** | Window Shopping | `nadc/2021/windowshopping` | `nadc/2021/nadc2021-1.pdf` | [windowshopping](https://open.kattis.com/problems/windowshopping) | [21596](https://solved.ac/problems/21596) | | **M** | You Be the Judge! | `nadc/2021/youbethejudge` | `nadc/2021/nadc2021-1.pdf` | [youbethejudge](https://open.kattis.com/problems/youbethejudge) | [21597](https://solved.ac/problems/21597) | ### Practice Session | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------ | :--------------------------------------- | :--------------------------------- | :-------------------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Boss Battle | - | `nadc/2021/nadc2021practice-1.pdf` | - | - | | **B** | Candle Box | - | `nadc/2021/nadc2021practice-1.pdf` | - | - | | **C** | Careful Ascent | - | `nadc/2021/nadc2021practice-1.pdf` | - | - | | **D** | Completing the Square | - | `nadc/2021/nadc2021practice-1.pdf` | - | - | | **E** | European Trip | - | `nadc/2021/nadc2021practice-1.pdf` | - | - | | **F** | Final Exam | - | `nadc/2021/nadc2021practice-1.pdf` | - | - | | **G** | ICPC Awards | - | `nadc/2021/nadc2021practice-1.pdf` | - | - | | **H** | Janitor Troubles | - | `nadc/2021/nadc2021practice-1.pdf` | - | - | | **I** | Millionaire Madness | - | `nadc/2021/nadc2021practice-1.pdf` | - | - | | **J** | Reversed Binary Numbers | - | `nadc/2021/nadc2021practice-1.pdf` | - | - | | **K** | Shattered Cake | - | `nadc/2021/nadc2021practice-1.pdf` | - | - | | **L** | Soda Slurper | - | `nadc/2021/nadc2021practice-1.pdf` | - | - | --- ## North America East Regional Contest (NA East) (2023) - **Contest Slug:** `naeast` - **Year:** 2023 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2023%20North%20America%20East%20Division%20Contest) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------------------ | :-------------------------------- | :---------------------------- | :-------------------------------------------------------------------------: | :-------: | | **A** | A Pivotal Question | `naeast/2023/apivotalquestion` | `naeast/2023/ecna2023-24.pdf` | [apivotalquestion](https://open.kattis.com/problems/apivotalquestion) | - | | **B** | B Road Band | `naeast/2023/broadband` | `naeast/2023/ecna2023-24.pdf` | [broadband](https://open.kattis.com/problems/broadband) | - | | **C** | Convex Hull Extension | `naeast/2023/convexhullextension` | `naeast/2023/ecna2023-24.pdf` | [convexhullextension](https://open.kattis.com/problems/convexhullextension) | - | | **D** | Cornhusker | `naeast/2023/cornhusker` | `naeast/2023/ecna2023-24.pdf` | [cornhusker](https://open.kattis.com/problems/cornhusker) | - | | **E** | Prof. Fumblemore and the Collatz Conjecture | `naeast/2023/coltype` | `naeast/2023/ecna2023-24.pdf` | [coltype](https://open.kattis.com/problems/coltype) | - | | **F** | Double Up | `naeast/2023/doubleup` | `naeast/2023/ecna2023-24.pdf` | [doubleup](https://open.kattis.com/problems/doubleup) | - | | **G** | Forest for the Trees | `naeast/2023/forestforthetrees` | `naeast/2023/ecna2023-24.pdf` | [forestforthetrees2](https://open.kattis.com/problems/forestforthetrees2) | - | | **H** | Impartial Strings | `naeast/2023/impartialstrings` | `naeast/2023/ecna2023-24.pdf` | [impartialstrings](https://open.kattis.com/problems/impartialstrings) | - | | **I** | ISBN Conversion | `naeast/2023/isbnconversion` | `naeast/2023/ecna2023-24.pdf` | [isbnconversion](https://open.kattis.com/problems/isbnconversion) | - | | **J** | Pearls | `naeast/2023/pearls` | `naeast/2023/ecna2023-24.pdf` | [pearls](https://open.kattis.com/problems/pearls) | - | | **K** | Split Decisions | `naeast/2023/splitdecisions` | `naeast/2023/ecna2023-24.pdf` | [splitdecisions](https://open.kattis.com/problems/splitdecisions) | - | | **L** | A (Fast) Walk in the Woods | `naeast/2023/walkinthewoods` | `naeast/2023/ecna2023-24.pdf` | [walkinthewoods](https://open.kattis.com/problems/walkinthewoods) | - | --- ## North America East Regional Contest (NA East) (2024) - **Contest Slug:** `naeast` - **Year:** 2024 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2024%20North%20America%20East%20Division%20Contest) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :------------------------------------ | :-------------------------------- | :---------------------------------------------------------------------------------: | :-------: | | **A** | A Stack of Gold | `naeast/2024/astackofgold` | `naeast/2024/problemset24_25.pdf` | [astackofgold](https://open.kattis.com/problems/astackofgold) | - | | **B** | Average Substring Value | `naeast/2024/averagesubstringvalue` | `naeast/2024/problemset24_25.pdf` | [averagesubstringvalue](https://open.kattis.com/problems/averagesubstringvalue) | - | | **C** | Balancing Art | `naeast/2024/balancingart` | `naeast/2024/problemset24_25.pdf` | [balancingart](https://open.kattis.com/problems/balancingart) | - | | **D** | Brownian Bears | `naeast/2024/brownianbears` | `naeast/2024/problemset24_25.pdf` | [brownianbears](https://open.kattis.com/problems/brownianbears) | - | | **E** | Fences Make Good Neighbors | `naeast/2024/fencesmakegoodneighbors` | `naeast/2024/problemset24_25.pdf` | [fencesmakegoodneighbors](https://open.kattis.com/problems/fencesmakegoodneighbors) | - | | **F** | Leapfrog Encryption | `naeast/2024/leapfrogencryption` | `naeast/2024/problemset24_25.pdf` | [leapfrogencryption](https://open.kattis.com/problems/leapfrogencryption) | - | | **G** | Letter Balloons | `naeast/2024/letterballoons` | `naeast/2024/problemset24_25.pdf` | [letterballoons](https://open.kattis.com/contests/epgg92/problems/letterballoons) | - | | **H** | Marching Orders | `naeast/2024/marchingorders` | `naeast/2024/problemset24_25.pdf` | [marchingorders](https://open.kattis.com/problems/marchingorders) | - | | **I** | Oooh I See | `naeast/2024/ooohisee` | `naeast/2024/problemset24_25.pdf` | [ooohisee](https://open.kattis.com/problems/ooohisee) | - | | **J** | Pascal Meets Boole | `naeast/2024/pascalmeetsboole` | `naeast/2024/problemset24_25.pdf` | [pascalmeetsboole](https://open.kattis.com/problems/pascalmeetsboole) | - | | **K** | Pony-less Express | `naeast/2024/ponylessexpress` | `naeast/2024/problemset24_25.pdf` | [ponylessexpress](https://open.kattis.com/problems/ponylessexpress) | - | | **L** | Repetitive Routes | `naeast/2024/repetitiveroutes` | `naeast/2024/problemset24_25.pdf` | [repetitiveroutes](https://open.kattis.com/problems/repetitiveroutes) | - | | **M** | Smart Password Validation | `naeast/2024/smartpasswordvalidation` | `naeast/2024/problemset24_25.pdf` | [smartpasswordvalidation](https://open.kattis.com/problems/smartpasswordvalidation) | - | --- ## North America East Regional Contest (NA East) (2025) - **Contest Slug:** `naeast` - **Year:** 2025 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2025%20North%20America%20East%20Division%20Contest) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------- | :----------------------------------- | :-------------------------------------------------------------- | :---------------------------------------------------------------------------: | :-------: | | **A** | A Little Leftover Pizza | `naeast/2025/A-Alittleleftoverpizza` | `naeast/2025/A-Alittleleftoverpizza/A-Alittleleftoverpizza.pdf` | [alittleleftoverpizza](https://open.kattis.com/problems/alittleleftoverpizza) | - | | **B** | Andor Strikes Again | `naeast/2025/B-Andor` | `naeast/2025/B-Andor/B-Andor.pdf` | [andor](https://open.kattis.com/problems/andor) | - | | **C** | AROD | `naeast/2025/C-Arod` | `naeast/2025/C-Arod/C-Arod.pdf` | [arod](https://open.kattis.com/problems/arod) | - | | **D** | But I Want to Win | `naeast/2025/D-Butiwanttowin` | `naeast/2025/D-Butiwanttowin/D-Butiwanttowin.pdf` | [butiwanttowin](https://open.kattis.com/problems/butiwanttowin) | - | | **E** | Chess Solitaire | `naeast/2025/E-Chesssolitaire` | `naeast/2025/E-Chesssolitaire/E-Chesssolitaire.pdf` | [chesssolitaire](https://open.kattis.com/problems/chesssolitaire) | - | | **F** | Fractional Sequence | `naeast/2025/F-Fractionalsequence` | `naeast/2025/F-Fractionalsequence/F-Fractionalsequence.pdf` | [fractionalsequence](https://open.kattis.com/problems/fractionalsequence) | - | | **G** | How Many Balls? | `naeast/2025/G-Howmanyballs` | `naeast/2025/G-Howmanyballs/G-Howmanyballs.pdf` | [howmanyballs](https://open.kattis.com/problems/howmanyballs) | - | | **H** | Move It, Slowpoke! | `naeast/2025/H-Moveitslowpoke` | `naeast/2025/H-Moveitslowpoke/H-Moveitslowpoke.pdf` | [moveitslowpoke](https://open.kattis.com/problems/moveitslowpoke) | - | | **I** | Number Pyramid | `naeast/2025/I-Numberpyramid` | `naeast/2025/I-Numberpyramid/I-Numberpyramid.pdf` | [numberpyramid](https://open.kattis.com/problems/numberpyramid) | - | | **J** | Polyomino Tiling | `naeast/2025/J-Polyominotiling` | `naeast/2025/J-Polyominotiling/J-Polyominotiling.pdf` | [polyominotiling](https://open.kattis.com/problems/polyominotiling) | - | | **K** | Triptych | `naeast/2025/K-Triptych` | `naeast/2025/K-Triptych/K-Triptych.pdf` | [triptych](https://open.kattis.com/problems/triptych) | - | | **L** | Valley Gulls | `naeast/2025/L-Valleygulls` | `naeast/2025/L-Valleygulls/L-Valleygulls.pdf` | [valleygulls](https://open.kattis.com/problems/valleygulls) | - | --- ## North American Invitational Programming Contest (2012) - **Contest Slug:** `naipc` - **Year:** 2012 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2012%20University%20of%20Chicago%20Invitational%20Programming%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/428) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------- | :------------------------- | :------------------------ | :---------------------------------------------------------------: | :---------------------------------------: | | **A** | CosmoCraft | `naipc/2012/cosmo` | `naipc/2012/problems.pdf` | [cosmocraft](https://open.kattis.com/problems/cosmocraft) | [4786](https://solved.ac/problems/4786) | | **B** | Covered Walkway | `naipc/2012/covered` | `naipc/2012/problems.pdf` | [coveredwalkway](https://open.kattis.com/problems/coveredwalkway) | [4787](https://solved.ac/problems/4787) | | **C** | Double Dealing | `naipc/2012/doubledealing` | `naipc/2012/problems.pdf` | [double](https://open.kattis.com/problems/double) | [4788](https://solved.ac/problems/4788) | | **D** | The End of the World | `naipc/2012/theend` | `naipc/2012/problems.pdf` | [endoftheworld](https://open.kattis.com/problems/endoftheworld) | [4789](https://solved.ac/problems/4789) | | **E** | Estimation | `naipc/2012/estimate` | `naipc/2012/problems.pdf` | [estimation](https://open.kattis.com/problems/estimation) | [4790](https://solved.ac/problems/4790) | | **F** | Juggler | `naipc/2012/juggler` | `naipc/2012/problems.pdf` | [juggler](https://open.kattis.com/problems/juggler) | [4791](https://solved.ac/problems/4791) | | **G** | Red/Blue Spanning Tree | `naipc/2012/redblue` | `naipc/2012/problems.pdf` | [redbluetree](https://open.kattis.com/problems/redbluetree) | [4792](https://solved.ac/problems/4792) | | **H** | The Red Gem | `naipc/2012/redgem` | `naipc/2012/problems.pdf` | [redgem](https://open.kattis.com/problems/redgem) | [4793](https://solved.ac/problems/4793) | | **I** | Science! | `naipc/2012/science` | `naipc/2012/problems.pdf` | [science](https://open.kattis.com/problems/science) | [4794](https://solved.ac/problems/4794) | | **J** | The Worm in the Apple | `naipc/2012/worm` | `naipc/2012/problems.pdf` | [worminapple](https://open.kattis.com/problems/worminapple) | [4795](https://solved.ac/problems/4795) | --- ## North American Invitational Programming Contest (2013) - **Contest Slug:** `naipc` - **Year:** 2013 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2013%20University%20of%20Chicago%20Invitational%20Programming%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/854) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------- | :---------------------------- | :------------------------------------------------------ | :---------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Winter Roads | `naipc/2013/bridges` | `naipc/2013/UChicago-Invitational-2013-Problem-Set.pdf` | [winterroads](https://open.kattis.com/problems/winterroads) | [7148](https://solved.ac/problems/7148) | | **B** | Can of Worms | `naipc/2013/cans` | `naipc/2013/UChicago-Invitational-2013-Problem-Set.pdf` | [canofworms](https://open.kattis.com/problems/canofworms) | [7149](https://solved.ac/problems/7149) | | **C** | Automatic Trading | `naipc/2013/trading` | `naipc/2013/UChicago-Invitational-2013-Problem-Set.pdf` | [automatictrading](https://open.kattis.com/problems/automatictrading) | [7150](https://solved.ac/problems/7150) | | **D** | 3D Printer | `naipc/2013/threedprinter` | `naipc/2013/UChicago-Invitational-2013-Problem-Set.pdf` | [threedprinter](https://open.kattis.com/problems/threedprinter) | [7151](https://solved.ac/problems/7151) | | **E** | Flooding Fields | `naipc/2013/floodingfields` | `naipc/2013/UChicago-Invitational-2013-Problem-Set.pdf` | [floodingfields](https://open.kattis.com/problems/floodingfields) | [7152](https://solved.ac/problems/7152) | | **F** | Goat Ropes | `naipc/2013/goatropes` | `naipc/2013/UChicago-Invitational-2013-Problem-Set.pdf` | [goatropes](https://open.kattis.com/problems/goatropes) | [7153](https://solved.ac/problems/7153) | | **G** | Job Postings | `naipc/2013/jobpostings` | `naipc/2013/UChicago-Invitational-2013-Problem-Set.pdf` | [jobpostings](https://open.kattis.com/problems/jobpostings) | [7154](https://solved.ac/problems/7154) | | **H** | Overlapping Maps | `naipc/2013/overlappingmaps` | `naipc/2013/UChicago-Invitational-2013-Problem-Set.pdf` | [overlappingmaps](https://open.kattis.com/problems/overlappingmaps) | [7155](https://solved.ac/problems/7155) | | **I** | Unreal Estate | `naipc/2013/realestate` | `naipc/2013/UChicago-Invitational-2013-Problem-Set.pdf` | [unrealestate](https://open.kattis.com/problems/unrealestate) | [7156](https://solved.ac/problems/7156) | | **J** | Satisfaction Guaranteed | `naipc/2013/satisfaction` | `naipc/2013/UChicago-Invitational-2013-Problem-Set.pdf` | [satisfaction](https://open.kattis.com/problems/satisfaction) | [7157](https://solved.ac/problems/7157) | | **K** | Uniform Subtrees | `naipc/2013/uniform` | `naipc/2013/UChicago-Invitational-2013-Problem-Set.pdf` | [uniformsubtrees](https://open.kattis.com/problems/uniformsubtrees) | [7158](https://solved.ac/problems/7158) | --- ## North American Invitational Programming Contest (2014) - **Contest Slug:** `naipc` - **Year:** 2014 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/North%20American%20Invitational%20Programming%20Contest%20%28NAIPC%29%202014) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1282) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------- | :-------------------------- | :----------------------------------- | :-------------------------------------------------------------------: | :---------------------------------------: | | **A** | Banjo | `naipc/2014/banjo` | `naipc/2014/NAIPC-2014-Problems.pdf` | [banjo](https://open.kattis.com/problems/banjo) | [10240](https://solved.ac/problems/10240) | | **B** | Cheats | `naipc/2014/cheats` | `naipc/2014/NAIPC-2014-Problems.pdf` | [cheats](https://open.kattis.com/problems/cheats) | [10241](https://solved.ac/problems/10241) | | **C** | Diplomacy | `naipc/2014/diplomacy` | `naipc/2014/NAIPC-2014-Problems.pdf` | [diplomacy](https://open.kattis.com/problems/diplomacy) | [10242](https://solved.ac/problems/10242) | | **D** | Fantastic Problem | `naipc/2014/fantastic` | `naipc/2014/NAIPC-2014-Problems.pdf` | [fantasticproblem](https://open.kattis.com/problems/fantasticproblem) | [10243](https://solved.ac/problems/10243) | | **E** | GCDs | `naipc/2014/gcd` | `naipc/2014/NAIPC-2014-Problems.pdf` | [gcds](https://open.kattis.com/problems/gcds) | [10244](https://solved.ac/problems/10244) | | **F** | Gold Bandits | `naipc/2014/gold` | `naipc/2014/NAIPC-2014-Problems.pdf` | [goldbandits](https://open.kattis.com/problems/goldbandits) | [10245](https://solved.ac/problems/10245) | | **G** | Integer Estate Agent | `naipc/2014/estate` | `naipc/2014/NAIPC-2014-Problems.pdf` | [estate](https://open.kattis.com/problems/estate) | [10246](https://solved.ac/problems/10246) | | **H** | Reconnaissance | `naipc/2014/reconnaissance` | `naipc/2014/NAIPC-2014-Problems.pdf` | [reconnaissance](https://open.kattis.com/problems/reconnaissance) | [10247](https://solved.ac/problems/10247) | | **I** | Super Mario 169 | `naipc/2014/mario` | `naipc/2014/NAIPC-2014-Problems.pdf` | [supermario169](https://open.kattis.com/problems/supermario169) | [10248](https://solved.ac/problems/10248) | | **J** | Two Knight's Poem | `naipc/2014/twoknights` | `naipc/2014/NAIPC-2014-Problems.pdf` | [twoknights](https://open.kattis.com/problems/twoknights) | [10249](https://solved.ac/problems/10249) | --- ## North American Invitational Programming Contest (2015) - **Contest Slug:** `naipc` - **Year:** 2015 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/North%20American%20Invitational%20Programming%20Contest%20%28NAIPC%29%202015) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1387) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------- | :------------------------ | :------------------------ | :-----------------------------------------------------------: | :---------------------------------------: | | **A** | Area of Effect | `naipc/2015/areaofeffect` | `naipc/2015/problems.pdf` | [areaofeffect](https://open.kattis.com/problems/areaofeffect) | [11221](https://solved.ac/problems/11221) | | **B** | Canyon Mapping | `naipc/2015/canyon` | `naipc/2015/problems.pdf` | [canyon](https://open.kattis.com/problems/canyon) | [11222](https://solved.ac/problems/11222) | | **C** | Magic Checkerboard | `naipc/2015/checkerboard` | `naipc/2015/problems.pdf` | [checkerboard](https://open.kattis.com/problems/checkerboard) | [11223](https://solved.ac/problems/11223) | | **D** | Extensive Or | `naipc/2015/extensiveor` | `naipc/2015/problems.pdf` | [extensiveor](https://open.kattis.com/problems/extensiveor) | [11224](https://solved.ac/problems/11224) | | **E** | Primal Partitions | `naipc/2015/primal` | `naipc/2015/problems.pdf` | [primal](https://open.kattis.com/problems/primal) | [11225](https://solved.ac/problems/11225) | | **F** | Sand Art | `naipc/2015/sandart` | `naipc/2015/problems.pdf` | [sandart](https://open.kattis.com/problems/sandart) | [11226](https://solved.ac/problems/11226) | | **G** | String Stretching | `naipc/2015/stretching` | `naipc/2015/problems.pdf` | [stretching](https://open.kattis.com/problems/stretching) | [11227](https://solved.ac/problems/11227) | | **H** | Vending Machine | `naipc/2015/vending` | `naipc/2015/problems.pdf` | [vending](https://open.kattis.com/problems/vending) | [11228](https://solved.ac/problems/11228) | | **I** | Rainbow Zamboni | `naipc/2015/zamboni` | `naipc/2015/problems.pdf` | [zamboni](https://open.kattis.com/problems/zamboni) | [11229](https://solved.ac/problems/11229) | | **J** | Zig Zag Nametag | `naipc/2015/zigzag` | `naipc/2015/problems.pdf` | [zigzag](https://open.kattis.com/problems/zigzag) | [11230](https://solved.ac/problems/11230) | --- ## North American Invitational Programming Contest (2016) - **Contest Slug:** `naipc` - **Year:** 2016 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/North%20American%20Invitational%20Programming%20Contest%20%28NAIPC%29%202016) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1502) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------------- | :--------------------------- | :------------------------- | :-----------------------------------------------------------------: | :---------------------------------------: | | **A** | Fancy Antiques | `naipc/2016/antiques` | `naipc/2016/naipc2016.pdf` | [antiques](https://open.kattis.com/problems/antiques) | [13051](https://solved.ac/problems/13051) | | **B** | Alternative Bracket Notation | `naipc/2016/bracketnotation` | `naipc/2016/naipc2016.pdf` | [bracketnotation](https://open.kattis.com/problems/bracketnotation) | [13052](https://solved.ac/problems/13052) | | **C** | Greetings! | `naipc/2016/greetings` | `naipc/2016/naipc2016.pdf` | [greetings](https://open.kattis.com/problems/greetings) | [13053](https://solved.ac/problems/13053) | | **E** | Inversions | `naipc/2016/kinversions` | `naipc/2016/naipc2016.pdf` | [kinversions](https://open.kattis.com/problems/kinversions) | [13055](https://solved.ac/problems/13055) | | **F** | Mountain Scenes | `naipc/2016/scenes` | `naipc/2016/naipc2016.pdf` | [scenes](https://open.kattis.com/problems/scenes) | [13056](https://solved.ac/problems/13056) | | **G** | Symmetry | `naipc/2016/symmetry` | `naipc/2016/naipc2016.pdf` | [symmetry](https://open.kattis.com/problems/symmetry) | [13057](https://solved.ac/problems/13057) | | **H** | Jewel Thief | `naipc/2016/thief` | `naipc/2016/naipc2016.pdf` | [thief](https://open.kattis.com/problems/thief) | [13058](https://solved.ac/problems/13058) | | **I** | Tourists | `naipc/2016/tourists` | `naipc/2016/naipc2016.pdf` | [tourists](https://open.kattis.com/problems/tourists) | [13059](https://solved.ac/problems/13059) | | **J** | Whiteboard | `naipc/2016/whiteboard` | `naipc/2016/naipc2016.pdf` | [whiteboard](https://open.kattis.com/problems/whiteboard) | [13060](https://solved.ac/problems/13060) | | **K** | YATP | `naipc/2016/yatp` | `naipc/2016/naipc2016.pdf` | [yatp](https://open.kattis.com/problems/yatp) | [13061](https://solved.ac/problems/13061) | --- ## North American Invitational Programming Contest (2017) - **Contest Slug:** `naipc` - **Year:** 2017 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/North%20American%20Invitational%20Programming%20Contest%20%28NAIPC%29%202017) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1733) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------ | :---------------- | :------------------------ | :-----------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Pieces of Parentheses | `naipc/2017/a` | `naipc/2017/problems.pdf` | [piecesofparentheses](https://open.kattis.com/problems/piecesofparentheses) | [14506](https://solved.ac/problems/14506) | | **B** | Stars in a Can | `naipc/2017/b` | `naipc/2017/problems.pdf` | [starsinacan](https://open.kattis.com/problems/starsinacan) | [14507](https://solved.ac/problems/14507) | | **C** | Stretching Streamers | `naipc/2017/c` | `naipc/2017/problems.pdf` | [stretchingstreamers](https://open.kattis.com/problems/stretchingstreamers) | [14508](https://solved.ac/problems/14508) | | **D** | Heaps from Trees | `naipc/2017/d` | `naipc/2017/problems.pdf` | [heapstrees](https://open.kattis.com/problems/heapstrees) | [14509](https://solved.ac/problems/14509) | | **E** | Blazing New Trails | `naipc/2017/e` | `naipc/2017/problems.pdf` | [blazingnewtrails](https://open.kattis.com/problems/blazingnewtrails) | [14510](https://solved.ac/problems/14510) | | **F** | Incremental Double Free Strings | `naipc/2017/f` | `naipc/2017/problems.pdf` | [idf](https://open.kattis.com/problems/idf) | [14511](https://solved.ac/problems/14511) | | **G** | Apple Market | `naipc/2017/g` | `naipc/2017/problems.pdf` | [applemarket](https://open.kattis.com/problems/applemarket) | [14512](https://solved.ac/problems/14512) | | **H** | Maximum Color Clique | `naipc/2017/h` | `naipc/2017/problems.pdf` | [maxcolorclique](https://open.kattis.com/problems/maxcolorclique) | [14513](https://solved.ac/problems/14513) | | **I** | Ski Resort | `naipc/2017/i` | `naipc/2017/problems.pdf` | [skiresort](https://open.kattis.com/problems/skiresort) | [14514](https://solved.ac/problems/14514) | | **J** | Yin and Yang Stones | `naipc/2017/j` | `naipc/2017/problems.pdf` | [yinyangstones](https://open.kattis.com/problems/yinyangstones) | [14515](https://solved.ac/problems/14515) | | **K** | Unbalanced Parentheses | `naipc/2017/k` | `naipc/2017/problems.pdf` | [unbalancedparentheses](https://open.kattis.com/problems/unbalancedparentheses) | [14516](https://solved.ac/problems/14516) | --- ## North American Invitational Programming Contest (2018) - **Contest Slug:** `naipc` - **Year:** 2018 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/North%20American%20Invitational%20Programming%20Contest%20%28NAIPC%29%202018) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1906) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------- | :---------------- | :--------------------------- | :---------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Cut It Out! | - | `naipc/2018/naipc2018-1.pdf` | [cutitout](https://open.kattis.com/problems/cutitout) | [16040](https://solved.ac/problems/16040) | | **B** | Double Clique | - | `naipc/2018/naipc2018-1.pdf` | [doubleclique](https://open.kattis.com/problems/doubleclique) | [16041](https://solved.ac/problems/16041) | | **C** | Flashing Fluorescents | - | `naipc/2018/naipc2018-1.pdf` | [flashingfluorescents](https://open.kattis.com/problems/flashingfluorescents) | [16042](https://solved.ac/problems/16042) | | **D** | Missing Gnomes | - | `naipc/2018/naipc2018-1.pdf` | [missinggnomes](https://open.kattis.com/problems/missinggnomes) | [16043](https://solved.ac/problems/16043) | | **E** | Prefix Free Code | - | `naipc/2018/naipc2018-1.pdf` | [prefixfreecode](https://open.kattis.com/problems/prefixfreecode) | [16044](https://solved.ac/problems/16044) | | **F** | Probe Droids | - | `naipc/2018/naipc2018-1.pdf` | [probedroids](https://open.kattis.com/problems/probedroids) | [16045](https://solved.ac/problems/16045) | | **G** | Rainbow Graph | - | `naipc/2018/naipc2018-1.pdf` | [rainbowgraph](https://open.kattis.com/problems/rainbowgraph) | [16046](https://solved.ac/problems/16046) | | **H** | Recovery | - | `naipc/2018/naipc2018-1.pdf` | [recovery](https://open.kattis.com/problems/recovery) | [16047](https://solved.ac/problems/16047) | | **I** | Red Black Tree | - | `naipc/2018/naipc2018-1.pdf` | [redblacktree](https://open.kattis.com/problems/redblacktree) | [16048](https://solved.ac/problems/16048) | | **J** | Winter Festival | - | `naipc/2018/naipc2018-1.pdf` | [winterfestival](https://open.kattis.com/problems/winterfestival) | [16049](https://solved.ac/problems/16049) | | **K** | Zoning Houses | - | `naipc/2018/naipc2018-1.pdf` | [zoninghouses](https://open.kattis.com/problems/zoninghouses) | [16050](https://solved.ac/problems/16050) | --- ## North American Invitational Programming Contest (2019) - **Contest Slug:** `naipc` - **Year:** 2019 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/North%20American%20Invitational%20Programming%20Contest%20%28NAIPC%29%202019) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2003) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------------------- | :---------------- | :------------------------ | :---------------------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Piece of Cake | `naipc/2019/a` | `naipc/2019/problems.pdf` | [pieceofcake](https://open.kattis.com/problems/pieceofcake) | [16995](https://solved.ac/problems/16995) | | **B** | Busy Board | `naipc/2019/b` | `naipc/2019/problems.pdf` | [busyboard](https://open.kattis.com/problems/busyboard) | [16996](https://solved.ac/problems/16996) | | **C** | Cost of Living | `naipc/2019/c` | `naipc/2019/problems.pdf` | [costofliving](https://open.kattis.com/problems/costofliving) | [16997](https://solved.ac/problems/16997) | | **D** | It's a Mod, Mod, Mod, Mod World | `naipc/2019/d` | `naipc/2019/problems.pdf` | [itsamodmodmodmodworld](https://open.kattis.com/problems/itsamodmodmodmodworld) | [16998](https://solved.ac/problems/16998) | | **E** | Monotony | `naipc/2019/e` | `naipc/2019/problems.pdf` | [monotony](https://open.kattis.com/problems/monotony) | [16999](https://solved.ac/problems/16999) | | **F** | Heaps of Fun | `naipc/2019/f` | `naipc/2019/problems.pdf` | [heapsoffun](https://open.kattis.com/problems/heapsoffun) | [17000](https://solved.ac/problems/17000) | | **G** | Intersecting Rectangles | `naipc/2019/g` | `naipc/2019/problems.pdf` | [intersectingrectangles](https://open.kattis.com/problems/intersectingrectangles) | [17001](https://solved.ac/problems/17001) | | **H** | Rocket Powered Hovercraft | `naipc/2019/h` | `naipc/2019/problems.pdf` | [rocketpoweredhovercraft](https://open.kattis.com/problems/rocketpoweredhovercraft) | [17002](https://solved.ac/problems/17002) | | **I** | Cutting Strings | `naipc/2019/i` | `naipc/2019/problems.pdf` | [cuttingstrings](https://open.kattis.com/problems/cuttingstrings) | [17003](https://solved.ac/problems/17003) | | **J** | Subsequences in Substrings | `naipc/2019/j` | `naipc/2019/problems.pdf` | [subsequencesinsubstrings](https://open.kattis.com/problems/subsequencesinsubstrings) | [17004](https://solved.ac/problems/17004) | | **K** | Knight of the Tarot Cards | `naipc/2019/k` | `naipc/2019/problems.pdf` | [knightofthetarotcards](https://open.kattis.com/problems/knightofthetarotcards) | [17005](https://solved.ac/problems/17005) | | **L** | Planes, Trains, but not Automobiles | `naipc/2019/l` | `naipc/2019/problems.pdf` | [planestrainsbutnotautomobiles](https://open.kattis.com/problems/planestrainsbutnotautomobiles) | [17006](https://solved.ac/problems/17006) | | **M** | XOR Sequences | `naipc/2019/m` | `naipc/2019/problems.pdf` | [xorsequences](https://open.kattis.com/problems/xorsequences) | [17007](https://solved.ac/problems/17007) | --- ## Northeast North America Regional Contest (2023) - **Contest Slug:** `nane` - **Year:** 2023 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2023%20North%20America%20East%20Division%20Contest) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------------------ | :------------------------------ | :-------------------------- | :-------------------------------------------------------------------------: | :-------: | | **A** | A Pivotal Question | `nane/2023/apivotalquestion` | `nane/2023/ecna2023-24.pdf` | [apivotalquestion](https://open.kattis.com/problems/apivotalquestion) | - | | **B** | B Road Band | `nane/2023/broadband` | `nane/2023/ecna2023-24.pdf` | [broadband](https://open.kattis.com/problems/broadband) | - | | **C** | Convex Hull Extension | `nane/2023/convexhullextension` | `nane/2023/ecna2023-24.pdf` | [convexhullextension](https://open.kattis.com/problems/convexhullextension) | - | | **D** | Cornhusker | `nane/2023/cornhusker` | `nane/2023/ecna2023-24.pdf` | [cornhusker](https://open.kattis.com/problems/cornhusker) | - | | **E** | Prof. Fumblemore and the Collatz Conjecture | `nane/2023/coltype` | `nane/2023/ecna2023-24.pdf` | [coltype](https://open.kattis.com/problems/coltype) | - | | **F** | Double Up | `nane/2023/doubleup` | `nane/2023/ecna2023-24.pdf` | [doubleup](https://open.kattis.com/problems/doubleup) | - | | **G** | Forest for the Trees | `nane/2023/forestforthetrees` | `nane/2023/ecna2023-24.pdf` | [forestforthetrees2](https://open.kattis.com/problems/forestforthetrees2) | - | | **H** | Impartial Strings | `nane/2023/impartialstrings` | `nane/2023/ecna2023-24.pdf` | [impartialstrings](https://open.kattis.com/problems/impartialstrings) | - | | **I** | ISBN Conversion | `nane/2023/isbnconversion` | `nane/2023/ecna2023-24.pdf` | [isbnconversion](https://open.kattis.com/problems/isbnconversion) | - | | **J** | Pearls | `nane/2023/pearls` | `nane/2023/ecna2023-24.pdf` | [pearls](https://open.kattis.com/problems/pearls) | - | | **K** | Split Decisions | `nane/2023/splitdecisions` | `nane/2023/ecna2023-24.pdf` | [splitdecisions](https://open.kattis.com/problems/splitdecisions) | - | | **L** | A (Fast) Walk in the Woods | `nane/2023/walkinthewoods` | `nane/2023/ecna2023-24.pdf` | [walkinthewoods](https://open.kattis.com/problems/walkinthewoods) | - | --- ## Northeast North America Regional Contest (2024) - **Contest Slug:** `nane` - **Year:** 2024 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2024%20North%20America%20East%20Division%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4343) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :---------------------------------- | :------------------------------ | :---------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | A Stack of Gold | `nane/2024/astackofgold` | `nane/2024/problemset24_25.pdf` | [astackofgold](https://open.kattis.com/problems/astackofgold) | [32805](https://solved.ac/problems/32805) | | **B** | Average Substring Value | `nane/2024/averagesubstringvalue` | `nane/2024/problemset24_25.pdf` | [averagesubstringvalue](https://open.kattis.com/problems/averagesubstringvalue) | [32806](https://solved.ac/problems/32806) | | **C** | Balancing Art | `nane/2024/balancingart` | `nane/2024/problemset24_25.pdf` | [balancingart](https://open.kattis.com/problems/balancingart) | [32807](https://solved.ac/problems/32807) | | **D** | Brownian Bears | `nane/2024/brownianbears` | `nane/2024/problemset24_25.pdf` | [brownianbears](https://open.kattis.com/problems/brownianbears) | [32808](https://solved.ac/problems/32808) | | **E** | Fences Make Good Neighbors | `nane/2024/fencesmakegoodneighbors` | `nane/2024/problemset24_25.pdf` | [fencesmakegoodneighbors](https://open.kattis.com/problems/fencesmakegoodneighbors) | [32809](https://solved.ac/problems/32809) | | **F** | Leapfrog Encryption | `nane/2024/leapfrogencryption` | `nane/2024/problemset24_25.pdf` | [leapfrogencryption](https://open.kattis.com/problems/leapfrogencryption) | [32810](https://solved.ac/problems/32810) | | **G** | Letter Balloons | `nane/2024/letterballoons` | `nane/2024/problemset24_25.pdf` | [letterballoons](https://open.kattis.com/contests/epgg92/problems/letterballoons) | [32811](https://solved.ac/problems/32811) | | **H** | Marching Orders | `nane/2024/marchingorders` | `nane/2024/problemset24_25.pdf` | [marchingorders](https://open.kattis.com/problems/marchingorders) | [32812](https://solved.ac/problems/32812) | | **I** | Oooh I See | `nane/2024/ooohisee` | `nane/2024/problemset24_25.pdf` | [ooohisee](https://open.kattis.com/problems/ooohisee) | [32813](https://solved.ac/problems/32813) | | **J** | Pascal Meets Boole | `nane/2024/pascalmeetsboole` | `nane/2024/problemset24_25.pdf` | [pascalmeetsboole](https://open.kattis.com/problems/pascalmeetsboole) | [32814](https://solved.ac/problems/32814) | | **K** | Pony-less Express | `nane/2024/ponylessexpress` | `nane/2024/problemset24_25.pdf` | [ponylessexpress](https://open.kattis.com/problems/ponylessexpress) | [32815](https://solved.ac/problems/32815) | | **L** | Repetitive Routes | `nane/2024/repetitiveroutes` | `nane/2024/problemset24_25.pdf` | [repetitiveroutes](https://open.kattis.com/problems/repetitiveroutes) | [32816](https://solved.ac/problems/32816) | | **M** | Smart Password Validation | `nane/2024/smartpasswordvalidation` | `nane/2024/problemset24_25.pdf` | [smartpasswordvalidation](https://open.kattis.com/problems/smartpasswordvalidation) | [32817](https://solved.ac/problems/32817) | --- ## Northeast North America Regional Contest (2025) - **Contest Slug:** `nane` - **Year:** 2025 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2025%20North%20America%20East%20Division%20Contest) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------- | :--------------------------------- | :------------------------------------------------------------ | :---------------------------------------------------------------------------: | :---------------------------------------: | | **A** | A Little Leftover Pizza | `nane/2025/A-Alittleleftoverpizza` | `nane/2025/A-Alittleleftoverpizza/A-Alittleleftoverpizza.pdf` | [alittleleftoverpizza](https://open.kattis.com/problems/alittleleftoverpizza) | [35373](https://solved.ac/problems/35373) | | **B** | Andor Strikes Again | `nane/2025/B-Andor` | `nane/2025/B-Andor/B-Andor.pdf` | [andor](https://open.kattis.com/problems/andor) | [35374](https://solved.ac/problems/35374) | | **C** | AROD | `nane/2025/C-Arod` | `nane/2025/C-Arod/C-Arod.pdf` | [arod](https://open.kattis.com/problems/arod) | [35375](https://solved.ac/problems/35375) | | **D** | But I Want to Win | `nane/2025/D-Butiwanttowin` | `nane/2025/D-Butiwanttowin/D-Butiwanttowin.pdf` | [butiwanttowin](https://open.kattis.com/problems/butiwanttowin) | [35376](https://solved.ac/problems/35376) | | **E** | Chess Solitaire | `nane/2025/E-Chesssolitaire` | `nane/2025/E-Chesssolitaire/E-Chesssolitaire.pdf` | [chesssolitaire](https://open.kattis.com/problems/chesssolitaire) | [35377](https://solved.ac/problems/35377) | | **F** | Fractional Sequence | `nane/2025/F-Fractionalsequence` | `nane/2025/F-Fractionalsequence/F-Fractionalsequence.pdf` | [fractionalsequence](https://open.kattis.com/problems/fractionalsequence) | [35378](https://solved.ac/problems/35378) | | **G** | How Many Balls? | `nane/2025/G-Howmanyballs` | `nane/2025/G-Howmanyballs/G-Howmanyballs.pdf` | [howmanyballs](https://open.kattis.com/problems/howmanyballs) | [35379](https://solved.ac/problems/35379) | | **H** | Move It, Slowpoke! | `nane/2025/H-Moveitslowpoke` | `nane/2025/H-Moveitslowpoke/H-Moveitslowpoke.pdf` | [moveitslowpoke](https://open.kattis.com/problems/moveitslowpoke) | [35380](https://solved.ac/problems/35380) | | **I** | Number Pyramid | `nane/2025/I-Numberpyramid` | `nane/2025/I-Numberpyramid/I-Numberpyramid.pdf` | [numberpyramid](https://open.kattis.com/problems/numberpyramid) | [35381](https://solved.ac/problems/35381) | | **J** | Polyomino Tiling | `nane/2025/J-Polyominotiling` | `nane/2025/J-Polyominotiling/J-Polyominotiling.pdf` | [polyominotiling](https://open.kattis.com/problems/polyominotiling) | [35382](https://solved.ac/problems/35382) | | **K** | Triptych | `nane/2025/K-Triptych` | `nane/2025/K-Triptych/K-Triptych.pdf` | [triptych](https://open.kattis.com/problems/triptych) | [35383](https://solved.ac/problems/35383) | | **L** | Valley Gulls | `nane/2025/L-Valleygulls` | `nane/2025/L-Valleygulls/L-Valleygulls.pdf` | [valleygulls](https://open.kattis.com/problems/valleygulls) | [35384](https://solved.ac/problems/35384) | --- ## North America Qualifier (2012) - **Contest Slug:** `naq` - **Year:** 2012 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/ICPC%202012%20North%20American%20Qualifier) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1309) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------------------- | :------------------------- | :---------------------- | :-----------------------------------------------------------------: | :---------------------------------------: | | **A** | Quite a problem | `naq/2012/quiteaproblem` | `naq/2012/problems.pdf` | [quiteaproblem](https://open.kattis.com/problems/quiteaproblem) | [10491](https://solved.ac/problems/10491) | | **B** | Multi-touch gesture classification | `naq/2012/multitouch` | `naq/2012/problems.pdf` | [multitouch](https://open.kattis.com/problems/multitouch) | [10492](https://solved.ac/problems/10492) | | **C** | Stacking Curvy Blocks | `naq/2012/curvyblocks` | `naq/2012/problems.pdf` | [curvyblocks](https://open.kattis.com/problems/curvyblocks) | [10493](https://solved.ac/problems/10493) | | **D** | Unicycle counting | `naq/2012/unicycles` | `naq/2012/problems.pdf` | [unicycles](https://open.kattis.com/problems/unicycles) | [10494](https://solved.ac/problems/10494) | | **E** | Choosing Numbers | `naq/2012/choosingnumbers` | `naq/2012/problems.pdf` | [choosingnumbers](https://open.kattis.com/problems/choosingnumbers) | [10495](https://solved.ac/problems/10495) | | **F** | Loopy transit | `naq/2012/loopytransit` | `naq/2012/problems.pdf` | [loopytransit](https://open.kattis.com/problems/loopytransit) | [10496](https://solved.ac/problems/10496) | | **G** | Hitting the Targets | `naq/2012/hittingtargets` | `naq/2012/problems.pdf` | [hittingtargets](https://open.kattis.com/problems/hittingtargets) | [10497](https://solved.ac/problems/10497) | | **H** | Texas Summers | `naq/2012/texassummers` | `naq/2012/problems.pdf` | [texassummers](https://open.kattis.com/problems/texassummers) | [10498](https://solved.ac/problems/10498) | | **I** | Out of context | `naq/2012/outofcontext` | `naq/2012/problems.pdf` | [outofcontext](https://open.kattis.com/problems/outofcontext) | [10499](https://solved.ac/problems/10499) | | **J** | Maze movement | `naq/2012/mazemovement` | `naq/2012/problems.pdf` | [mazemovement](https://open.kattis.com/problems/mazemovement) | [10500](https://solved.ac/problems/10500) | | **K** | Ragged Right | `naq/2012/raggedright` | `naq/2012/problems.pdf` | [raggedright](https://open.kattis.com/problems/raggedright) | [10501](https://solved.ac/problems/10501) | --- ## North America Qualifier (2013) - **Contest Slug:** `naq` - **Year:** 2013 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2013%20ACM-ICPC%20North%20American%20Qualifier) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1308) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------- | :-------------------------- | :---------------------- | :-------------------------------------------------------------------: | :---------------------------------------: | | **A** | Oddities | `naq/2013/oddities` | `naq/2013/problems.pdf` | [oddities](https://open.kattis.com/problems/oddities) | [10480](https://solved.ac/problems/10480) | | **B** | Ternarian Weights | `naq/2013/ternarianweights` | `naq/2013/problems.pdf` | [ternarianweights](https://open.kattis.com/problems/ternarianweights) | [10481](https://solved.ac/problems/10481) | | **C** | Goldbach's Conjecture | `naq/2013/goldbach` | `naq/2013/problems.pdf` | [goldbach2](https://open.kattis.com/problems/goldbach2) | [10482](https://solved.ac/problems/10482) | | **D** | Shotcube | `naq/2013/shotcube` | `naq/2013/problems.pdf` | [shotcube](https://open.kattis.com/problems/shotcube) | [10483](https://solved.ac/problems/10483) | | **E** | Erratic Ants | `naq/2013/erraticants` | `naq/2013/problems.pdf` | [erraticants](https://open.kattis.com/problems/erraticants) | [10484](https://solved.ac/problems/10484) | | **F** | Plotting Polynomials | `naq/2013/plot` | `naq/2013/problems.pdf` | [plot](https://open.kattis.com/problems/plot) | [10485](https://solved.ac/problems/10485) | | **G** | Trapezoid Walkway | `naq/2013/walkway` | `naq/2013/problems.pdf` | [walkway](https://open.kattis.com/problems/walkway) | [10486](https://solved.ac/problems/10486) | | **H** | 4 thought | `naq/2013/4thought` | `naq/2013/problems.pdf` | [4thought](https://open.kattis.com/problems/4thought) | [10487](https://solved.ac/problems/10487) | | **I** | Biggest Slice | `naq/2013/biggest` | `naq/2013/problems.pdf` | [biggest](https://open.kattis.com/problems/biggest) | [10488](https://solved.ac/problems/10488) | | **J** | Even Up Solitaire | `naq/2013/evenup` | `naq/2013/problems.pdf` | [evenup](https://open.kattis.com/problems/evenup) | [10489](https://solved.ac/problems/10489) | | **K** | Island Buses | `naq/2013/island` | `naq/2013/problems.pdf` | [island](https://open.kattis.com/problems/island) | [10490](https://solved.ac/problems/10490) | --- ## North America Qualifier (2014) - **Contest Slug:** `naq` - **Year:** 2014 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2014%20ICPC%20North%20America%20Qualifier) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1307) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------- | :-------------------------- | :---------------------- | :-------------------------------------------------------------------: | :---------------------------------------: | | **A** | Eight Queens | `naq/2014/8queens` | `naq/2014/problems.pdf` | [8queens](https://open.kattis.com/problems/8queens) | [10469](https://solved.ac/problems/10469) | | **B** | Color Walk | `naq/2014/colorwalk` | `naq/2014/problems.pdf` | [colorwalk](https://open.kattis.com/problems/colorwalk) | [10470](https://solved.ac/problems/10470) | | **C** | Flexible Spaces | `naq/2014/flexible` | `naq/2014/problems.pdf` | [flexible](https://open.kattis.com/problems/flexible) | [10471](https://solved.ac/problems/10471) | | **D** | Flip Five | `naq/2014/flipfive` | `naq/2014/problems.pdf` | [flipfive](https://open.kattis.com/problems/flipfive) | [10472](https://solved.ac/problems/10472) | | **E** | Human Cannonball Run | `naq/2014/humancannonball` | `naq/2014/problems.pdf` | [humancannonball](https://open.kattis.com/problems/humancannonball) | [10473](https://solved.ac/problems/10473) | | **F** | Mixed Fractions | `naq/2014/mixedfractions` | `naq/2014/problems.pdf` | [mixedfractions](https://open.kattis.com/problems/mixedfractions) | [10474](https://solved.ac/problems/10474) | | **G** | Pesky Mosquitoes | `naq/2014/mosquitoes` | `naq/2014/problems.pdf` | [mosquitoes](https://open.kattis.com/problems/mosquitoes) | [10475](https://solved.ac/problems/10475) | | **H** | Narrow Art Gallery | `naq/2014/narrowartgallery` | `naq/2014/problems.pdf` | [narrowartgallery](https://open.kattis.com/problems/narrowartgallery) | [10476](https://solved.ac/problems/10476) | | **I** | Tractor | `naq/2014/tractor` | `naq/2014/problems.pdf` | [tractor](https://open.kattis.com/problems/tractor) | [10477](https://solved.ac/problems/10477) | | **J** | Units | `naq/2014/units` | `naq/2014/problems.pdf` | [units](https://open.kattis.com/problems/units) | [10478](https://solved.ac/problems/10478) | | **K** | Yikes – Bikes! | `naq/2014/yikes` | `naq/2014/problems.pdf` | [yikes](https://open.kattis.com/problems/yikes) | [10479](https://solved.ac/problems/10479) | --- ## North America Qualifier (2015) - **Contest Slug:** `naq` - **Year:** 2015 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2015%20ICPC%20North%20American%20Qualifier%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1372) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------ | :-------------------------- | :--------------------------------- | :-------------------------------------------------------------------: | :---------------------------------------: | | **A** | All about that base | `naq/2015/allaboutthatbase` | `naq/2015/problemset-naq-2015.pdf` | [allaboutthatbase](https://open.kattis.com/problems/allaboutthatbase) | [11086](https://solved.ac/problems/11086) | | **B** | Bobby's Bet | `naq/2015/bobby` | `naq/2015/problemset-naq-2015.pdf` | [bobby](https://open.kattis.com/problems/bobby) | [11087](https://solved.ac/problems/11087) | | **C** | Cantina of Babel | `naq/2015/cantinaofbabel` | `naq/2015/problemset-naq-2015.pdf` | [cantinaofbabel](https://open.kattis.com/problems/cantinaofbabel) | [11088](https://solved.ac/problems/11088) | | **D** | Circuit Counting | `naq/2015/countcircuits` | `naq/2015/problemset-naq-2015.pdf` | [countcircuits](https://open.kattis.com/problems/countcircuits) | [11089](https://solved.ac/problems/11089) | | **E** | Cutting Brownies | `naq/2015/cuttingbrownies` | `naq/2015/problemset-naq-2015.pdf` | [cuttingbrownies](https://open.kattis.com/problems/cuttingbrownies) | [11090](https://solved.ac/problems/11090) | | **F** | Quick Brown Fox | `naq/2015/quickbrownfox` | `naq/2015/problemset-naq-2015.pdf` | [quickbrownfox](https://open.kattis.com/problems/quickbrownfox) | [11091](https://solved.ac/problems/11091) | | **G** | Safe Passage | `naq/2015/safepassage` | `naq/2015/problemset-naq-2015.pdf` | [safepassage](https://open.kattis.com/problems/safepassage) | [11092](https://solved.ac/problems/11092) | | **H** | Secret Message | `naq/2015/secretmessage` | `naq/2015/problemset-naq-2015.pdf` | [secretmessage](https://open.kattis.com/problems/secretmessage) | [11093](https://solved.ac/problems/11093) | | **I** | Simon Says | `naq/2015/simonsays` | `naq/2015/problemset-naq-2015.pdf` | [simonsays](https://open.kattis.com/problems/simonsays) | [11094](https://solved.ac/problems/11094) | | **J** | Torn To Pieces | `naq/2015/torn2pieces` | `naq/2015/problemset-naq-2015.pdf` | [torn2pieces](https://open.kattis.com/problems/torn2pieces) | [11095](https://solved.ac/problems/11095) | | **K** | UnDetected | `naq/2015/undetected` | `naq/2015/problemset-naq-2015.pdf` | [undetected](https://open.kattis.com/problems/undetected) | [11096](https://solved.ac/problems/11096) | --- ## North America Qualifier (2016) - **Contest Slug:** `naq` - **Year:** 2016 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2016%20ICPC%20North%20American%20Qualifier%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1523) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------- | :-------------------------- | :--------------------------------- | :-------------------------------------------------------------------: | :---------------------------------------: | | **A** | A New Alphabet | `naq/2016/anewalphabet` | `naq/2016/problemset-naq-2016.pdf` | [anewalphabet](https://open.kattis.com/problems/anewalphabet) | [13288](https://solved.ac/problems/13288) | | **B** | Arcade! | `naq/2016/arcade` | `naq/2016/problemset-naq-2016.pdf` | [arcade](https://open.kattis.com/problems/arcade) | [13289](https://solved.ac/problems/13289) | | **C** | Big Truck | `naq/2016/bigtruck` | `naq/2016/problemset-naq-2016.pdf` | [bigtruck](https://open.kattis.com/problems/bigtruck) | [13290](https://solved.ac/problems/13290) | | **D** | Brackets | `naq/2016/brackets` | `naq/2016/problemset-naq-2016.pdf` | [brackets](https://open.kattis.com/problems/brackets) | [13291](https://solved.ac/problems/13291) | | **E** | Dots and Boxes | `naq/2016/dotsboxes` | `naq/2016/problemset-naq-2016.pdf` | [dotsboxes](https://open.kattis.com/problems/dotsboxes) | [13292](https://solved.ac/problems/13292) | | **F** | Free Desserts | `naq/2016/freedesserts` | `naq/2016/problemset-naq-2016.pdf` | [freedesserts](https://open.kattis.com/problems/freedesserts) | [13293](https://solved.ac/problems/13293) | | **G** | Inverse Factorial | `naq/2016/inversefactorial` | `naq/2016/problemset-naq-2016.pdf` | [inversefactorial](https://open.kattis.com/problems/inversefactorial) | [13294](https://solved.ac/problems/13294) | | **H** | Nine Packs | `naq/2016/ninepacks` | `naq/2016/problemset-naq-2016.pdf` | [ninepacks](https://open.kattis.com/problems/ninepacks) | [13295](https://solved.ac/problems/13295) | | **I** | Primonimo | `naq/2016/primonimo` | `naq/2016/problemset-naq-2016.pdf` | [primonimo](https://open.kattis.com/problems/primonimo) | [13296](https://solved.ac/problems/13296) | | **J** | Quick Estimates | `naq/2016/quickestimate` | `naq/2016/problemset-naq-2016.pdf` | [quickestimate](https://open.kattis.com/problems/quickestimate) | [13297](https://solved.ac/problems/13297) | | **K** | Robotopia | `naq/2016/robotopia` | `naq/2016/problemset-naq-2016.pdf` | [robotopia](https://open.kattis.com/problems/robotopia) | [13298](https://solved.ac/problems/13298) | | **L** | Unusual Darts | `naq/2016/unusualdarts` | `naq/2016/problemset-naq-2016.pdf` | [unusualdarts](https://open.kattis.com/problems/unusualdarts) | [13299](https://solved.ac/problems/13299) | --- ## North America Qualifier (2017) - **Contest Slug:** `naq` - **Year:** 2017 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2017%20ICPC%20North%20American%20Qualifier%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1827) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------- | :----------------------------- | :---------------------- | :-------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Birthday Cake | `naq/2017/birthdaycake` | `naq/2017/problems.pdf` | [birthdaycake](https://open.kattis.com/problems/birthdaycake) | [15421](https://solved.ac/problems/15421) | | **B** | Bumped! | `naq/2017/bumped` | `naq/2017/problems.pdf` | [bumped](https://open.kattis.com/problems/bumped) | [15422](https://solved.ac/problems/15422) | | **C** | Canonical Coin Systems | `naq/2017/canonical` | `naq/2017/problems.pdf` | [canonical](https://open.kattis.com/problems/canonical) | [15423](https://solved.ac/problems/15423) | | **D** | Cat and Mice | `naq/2017/catandmice` | `naq/2017/problems.pdf` | [catandmice](https://open.kattis.com/problems/catandmice) | [15424](https://solved.ac/problems/15424) | | **E** | Company Picnic | `naq/2017/companypicnic` | `naq/2017/problems.pdf` | [companypicnic](https://open.kattis.com/problems/companypicnic) | [15425](https://solved.ac/problems/15425) | | **F** | GlitchBot | `naq/2017/glitchbot` | `naq/2017/problems.pdf` | [glitchbot](https://open.kattis.com/problems/glitchbot) | [15426](https://solved.ac/problems/15426) | | **G** | Greeting Card | `naq/2017/greetingcard` | `naq/2017/problems.pdf` | [greetingcard](https://open.kattis.com/problems/greetingcard) | [15427](https://solved.ac/problems/15427) | | **H** | Imperfect GPS | `naq/2017/imperfectgps` | `naq/2017/problems.pdf` | [imperfectgps](https://open.kattis.com/problems/imperfectgps) | [15428](https://solved.ac/problems/15428) | | **I** | Odd Gnome | `naq/2017/oddgnome` | `naq/2017/problems.pdf` | [oddgnome](https://open.kattis.com/problems/oddgnome) | [15429](https://solved.ac/problems/15429) | | **J** | Progressive Scramble | `naq/2017/progressivescramble` | `naq/2017/problems.pdf` | [progressivescramble](https://open.kattis.com/problems/progressivescramble) | [15430](https://solved.ac/problems/15430) | | **K** | Space Probe | `naq/2017/spaceprobe` | `naq/2017/problems.pdf` | [spaceprobe](https://open.kattis.com/problems/spaceprobe) | [15431](https://solved.ac/problems/15431) | | **L** | Suspension Bridges | `naq/2017/suspensionbridges` | `naq/2017/problems.pdf` | [suspensionbridges](https://open.kattis.com/problems/suspensionbridges) | [15432](https://solved.ac/problems/15432) | | **M** | Umbral Decoding | `naq/2017/umbraldecoding` | `naq/2017/problems.pdf` | [umbraldecoding](https://open.kattis.com/problems/umbraldecoding) | [15433](https://solved.ac/problems/15433) | --- ## North America Qualifier (2018) - **Contest Slug:** `naq` - **Year:** 2018 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2018%20ICPC%20North%20American%20Qualifier%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1969) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------------------------------------------------------- | :------------------------------ | :---------------------- | :---------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Bingo Ties | `naq/2018/bingoties` | `naq/2018/problems.pdf` | [bingoties](https://open.kattis.com/problems/bingoties) | [16624](https://solved.ac/problems/16624) | | **B** | Das Blinkenlights | `naq/2018/dasblinkenlights` | `naq/2018/problems.pdf` | [dasblinkenlights](https://open.kattis.com/problems/dasblinkenlights) | [16625](https://solved.ac/problems/16625) | | **C** | Ebony and Ivory | `naq/2018/ebonyandivory` | `naq/2018/problems.pdf` | [ebonyandivory](https://open.kattis.com/problems/ebonyandivory) | [16626](https://solved.ac/problems/16626) | | **D** | Froggie | `naq/2018/froggie` | `naq/2018/problems.pdf` | [froggie](https://open.kattis.com/problems/froggie) | [16627](https://solved.ac/problems/16627) | | **E** | Fruit Slicer | `naq/2018/fruitslicer` | `naq/2018/problems.pdf` | [fruitslicer](https://open.kattis.com/problems/fruitslicer) | [16628](https://solved.ac/problems/16628) | | **F** | LCM Tree | `naq/2018/lcmtree` | `naq/2018/problems.pdf` | [lcmtree](https://open.kattis.com/problems/lcmtree) | [16629](https://solved.ac/problems/16629) | | **G** | Left and Right | `naq/2018/leftandright` | `naq/2018/problems.pdf` | [leftandright](https://open.kattis.com/problems/leftandright) | [16630](https://solved.ac/problems/16630) | | **H** | Longest Life | `naq/2018/longestlife` | `naq/2018/problems.pdf` | [longestlife](https://open.kattis.com/problems/longestlife) | [16631](https://solved.ac/problems/16631) | | **I** | Monitoring Ski Paths | `naq/2018/monitoringskipaths` | `naq/2018/problems.pdf` | [monitoringskipaths](https://open.kattis.com/problems/monitoringskipaths) | [16632](https://solved.ac/problems/16632) | | **J** | Peg Game for Two | `naq/2018/peggamefortwo` | `naq/2018/problems.pdf` | [peggamefortwo](https://open.kattis.com/problems/peggamefortwo) | [16633](https://solved.ac/problems/16633) | | **K** | Run-Length Encoding, Run! | `naq/2018/runlengthencodingrun` | `naq/2018/problems.pdf` | [runlengthencodingrun](https://open.kattis.com/problems/runlengthencodingrun) | [16634](https://solved.ac/problems/16634) | | **L** | Superdoku | `naq/2018/superdoku` | `naq/2018/problems.pdf` | [superdoku](https://open.kattis.com/problems/superdoku) | [16635](https://solved.ac/problems/16635) | | **M** | Triangular Clouds | `naq/2018/triangularclouds` | `naq/2018/problems.pdf` | [triangularclouds](https://open.kattis.com/problems/triangularclouds) | [16636](https://solved.ac/problems/16636) | --- ## North America Qualifier (2019) - **Contest Slug:** `naq` - **Year:** 2019 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2019%20ICPC%20North%20American%20Qualifier%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2070) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------- | :----------------------------------- | :---------------------- | :-------------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Circuit Math | `naq/2019/circuitmath` | `naq/2019/problems.pdf` | [circuitmath](https://open.kattis.com/problems/circuitmath) | [17585](https://solved.ac/problems/17585) | | **B** | Diagonal Cut | `naq/2019/diagonalcut` | `naq/2019/problems.pdf` | [diagonalcut](https://open.kattis.com/problems/diagonalcut) | [17586](https://solved.ac/problems/17586) | | **C** | Gerrymandering | `naq/2019/gerrymandering` | `naq/2019/problems.pdf` | [gerrymandering](https://open.kattis.com/problems/gerrymandering) | [17587](https://solved.ac/problems/17587) | | **D** | Missing Numbers | `naq/2019/missingnumbers` | `naq/2019/problems.pdf` | [missingnumbers](https://open.kattis.com/problems/missingnumbers) | [17588](https://solved.ac/problems/17588) | | **E** | NVWLS | `naq/2019/nvwls` | `naq/2019/problems.pdf` | [nvwls](https://open.kattis.com/problems/nvwls) | [17589](https://solved.ac/problems/17589) | | **F** | Prospecting | `naq/2019/prospecting` | `naq/2019/problems.pdf` | [prospecting](https://open.kattis.com/problems/prospecting) | [17590](https://solved.ac/problems/17590) | | **G** | Research Productivity Index | `naq/2019/researchproductivityindex` | `naq/2019/problems.pdf` | [researchproductivityindex](https://open.kattis.com/problems/researchproductivityindex) | [17591](https://solved.ac/problems/17591) | | **H** | Running Routes | `naq/2019/runningroutes` | `naq/2019/problems.pdf` | [runningroutes](https://open.kattis.com/problems/runningroutes) | [17592](https://solved.ac/problems/17592) | | **I** | Slow Leak | `naq/2019/slowleak` | `naq/2019/problems.pdf` | [slowleak](https://open.kattis.com/problems/slowleak) | [17593](https://solved.ac/problems/17593) | | **J** | Stop Counting! | `naq/2019/stopcounting` | `naq/2019/problems.pdf` | [stopcounting](https://open.kattis.com/problems/stopcounting) | [17594](https://solved.ac/problems/17594) | | **K** | Summer Trip | `naq/2019/summertrip` | `naq/2019/problems.pdf` | [summertrip](https://open.kattis.com/problems/summertrip) | [17595](https://solved.ac/problems/17595) | | **L** | Traveling Merchant | `naq/2019/travelingmerchant` | `naq/2019/problems.pdf` | [travelingmerchant](https://open.kattis.com/problems/travelingmerchant) | [17596](https://solved.ac/problems/17596) | | **M** | Zipline | `naq/2019/zipline` | `naq/2019/problems.pdf` | [zipline](https://open.kattis.com/problems/zipline) | [17597](https://solved.ac/problems/17597) | --- ## North America Qualifier (2020) - **Contest Slug:** `naq` - **Year:** 2020 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2020%20ICPC%20North%20American%20Qualifier%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2440) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------ | :--------------------------- | :---------------------- | :---------------------------------------------------------------------: | :---------------------------------------: | | **A** | Drawing Circles | `naq/2020/drawingcircles` | `naq/2020/problems.pdf` | [drawingcircles](https://open.kattis.com/problems/drawingcircles) | [11088](https://solved.ac/problems/11088) | | **B** | Perfect Path Patrol | `naq/2020/perfectpathpatrol` | `naq/2020/problems.pdf` | [perfectpathpatrol](https://open.kattis.com/problems/perfectpathpatrol) | [20989](https://solved.ac/problems/20989) | | **C** | Sky's the Limit | `naq/2020/skysthelimit` | `naq/2020/problems.pdf` | [skysthelimit](https://open.kattis.com/problems/skysthelimit) | [10469](https://solved.ac/problems/10469) | | **D** | Using Digits | `naq/2020/usingdigits` | `naq/2020/problems.pdf` | [usingdigits](https://open.kattis.com/problems/usingdigits) | [10471](https://solved.ac/problems/10471) | --- ## North America Qualifier (2021) - **Contest Slug:** `naq` - **Year:** 2021 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2021%20ICPC%20North%20American%20Qualifier%20Contest%20%28Jan%202022%29) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/3015) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------- | :----------------------------- | :------------------------------ | :-------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Alien Integers | `naq/2021/alienintegers` | `naq/2021/naq2021_problems.pdf` | [alienintegers](https://open.kattis.com/problems/alienintegers) | [24401](https://solved.ac/problems/24401) | | **B** | Avoiding Asteroids | `naq/2021/avoidingasteroids` | `naq/2021/naq2021_problems.pdf` | [avoidingasteroids](https://open.kattis.com/problems/avoidingasteroids) | [24402](https://solved.ac/problems/24402) | | **C** | Common Factors | `naq/2021/commonfactors` | `naq/2021/naq2021_problems.pdf` | [commonfactors](https://open.kattis.com/problems/commonfactors) | [24403](https://solved.ac/problems/24403) | | **D** | Dimensional Analysis | `naq/2021/dimensionalanalysis` | `naq/2021/naq2021_problems.pdf` | [dimensionalanalysis](https://open.kattis.com/problems/dimensionalanalysis) | [24404](https://solved.ac/problems/24404) | | **E** | Eye of Sauron | `naq/2021/eyeofsauron` | `naq/2021/naq2021_problems.pdf` | [eyeofsauron](https://open.kattis.com/problems/eyeofsauron) | [24405](https://solved.ac/problems/24405) | | **F** | ilove Strings | `naq/2021/ilovestrings` | `naq/2021/naq2021_problems.pdf` | [ilovestrings](https://open.kattis.com/problems/ilovestrings) | [24406](https://solved.ac/problems/24406) | | **G** | MrCodeFormatGrader | `naq/2021/mrcodeformatgrader` | `naq/2021/naq2021_problems.pdf` | [mrcodeformatgrader](https://open.kattis.com/problems/mrcodeformatgrader) | [24407](https://solved.ac/problems/24407) | | **H** | Mult! | `naq/2021/mult` | `naq/2021/naq2021_problems.pdf` | [mult](https://open.kattis.com/problems/mult) | [24408](https://solved.ac/problems/24408) | | **I** | Pizza Party! | `naq/2021/pizzaparty` | `naq/2021/naq2021_problems.pdf` | [pizzaparty](https://open.kattis.com/problems/pizzaparty) | [24409](https://solved.ac/problems/24409) | | **J** | Stacking Up | `naq/2021/stackingup` | `naq/2021/naq2021_problems.pdf` | [stackingup](https://open.kattis.com/problems/stackingup) | [24410](https://solved.ac/problems/24410) | | **K** | Stamp Combinations | `naq/2021/stampcombinations` | `naq/2021/naq2021_problems.pdf` | [stampcombinations](https://open.kattis.com/problems/stampcombinations) | [24411](https://solved.ac/problems/24411) | | **L** | Sword Counting | `naq/2021/swordcounting` | `naq/2021/naq2021_problems.pdf` | [swordcounting](https://open.kattis.com/problems/swordcounting) | [24412](https://solved.ac/problems/24412) | | **M** | Tic-Tac State | `naq/2021/tictacstate` | `naq/2021/naq2021_problems.pdf` | [tictacstate](https://open.kattis.com/problems/tictacstate) | [24413](https://solved.ac/problems/24413) | | **N** | Venn Intervals | `naq/2021/vennintervals` | `naq/2021/naq2021_problems.pdf` | [vennintervals](https://open.kattis.com/problems/vennintervals) | [24414](https://solved.ac/problems/24414) | --- ## North America Qualifier (2022) - **Contest Slug:** `naq` - **Year:** 2022 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2022%20ICPC%20North%20America%20Qualifier) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/3475) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------ | :--------------------------------- | :--------------------- | :---------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Beast Bullies | `naq/2022/beastbullies` | `naq/2022/naq2022.pdf` | [beastbullies](https://open.kattis.com/problems/beastbullies) | [27384](https://solved.ac/problems/27384) | | **B** | Birthday Gift | `naq/2022/birthdaygift` | `naq/2022/naq2022.pdf` | [birthdaygift](https://open.kattis.com/problems/birthdaygift) | [27385](https://solved.ac/problems/27385) | | **C** | Class Field Trip | `naq/2022/classfieldtrip` | `naq/2022/naq2022.pdf` | [classfieldtrip](https://open.kattis.com/problems/classfieldtrip) | [27386](https://solved.ac/problems/27386) | | **D** | Ghost Leg | `naq/2022/ghostleg` | `naq/2022/naq2022.pdf` | [ghostleg](https://open.kattis.com/problems/ghostleg) | [27387](https://solved.ac/problems/27387) | | **E** | MazeMan | `naq/2022/mazeman` | `naq/2022/naq2022.pdf` | [mazeman](https://open.kattis.com/problems/mazeman) | [27388](https://solved.ac/problems/27388) | | **F** | Metronome | `naq/2022/metronome` | `naq/2022/naq2022.pdf` | [metronome](https://open.kattis.com/problems/metronome) | [27389](https://solved.ac/problems/27389) | | **G** | Movie Night | `naq/2022/movienight` | `naq/2022/naq2022.pdf` | [movienight](https://open.kattis.com/problems/movienight) | [27390](https://solved.ac/problems/27390) | | **H** | Platform Placing | `naq/2022/platformplacing` | `naq/2022/naq2022.pdf` | [platformplacing](https://open.kattis.com/problems/platformplacing) | [27391](https://solved.ac/problems/27391) | | **J** | Room Evacuation | `naq/2022/roomevacuation` | `naq/2022/naq2022.pdf` | [roomevacuation](https://open.kattis.com/problems/roomevacuation) | [27392](https://solved.ac/problems/27392) | | **K** | Smallest Calculated Value | `naq/2022/smallestcalculatedvalue` | `naq/2022/naq2022.pdf` | [smallestcalculatedvalue](https://open.kattis.com/problems/smallestcalculatedvalue) | [27393](https://solved.ac/problems/27393) | | **L** | Spidey Distance | `naq/2022/spideydistance` | `naq/2022/naq2022.pdf` | [spideydistance](https://open.kattis.com/problems/spideydistance) | [27394](https://solved.ac/problems/27394) | | **M** | Toll Roads | `naq/2022/tollroads` | `naq/2022/naq2022.pdf` | [tollroads](https://open.kattis.com/problems/tollroads) | [27395](https://solved.ac/problems/27395) | --- ## North America Qualifier (2023) - **Contest Slug:** `naq` - **Year:** 2023 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2023%20ICPC%20North%20America%20Qualifier%2030%20September) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4130) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------ | :---------------------------------- | :--------------------- | :-----------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Contest Advancement | `naq/2023/contestadvancement` | `naq/2023/naq23.pdf` | [contestadvancement](https://open.kattis.com/problems/contestadvancement) | [31301](https://solved.ac/problems/31301) | | **B** | Digit Translation | `naq/2023/digittranslation` | `naq/2023/naq23.pdf` | [digittranslation](https://open.kattis.com/problems/digittranslation) | [31302](https://solved.ac/problems/31302) | | **C** | Don't Hunger Together | `naq/2023/donthungertogether` | `naq/2023/naq23.pdf` | [donthungertogether](https://open.kattis.com/problems/donthungertogether) | [31303](https://solved.ac/problems/31303) | | **D** | Garden of Thorns | `naq/2023/gardenofthorns` | `naq/2023/naq23.pdf` | [gardenofthorns](https://open.kattis.com/problems/gardenofthorns) | [31304](https://solved.ac/problems/31304) | | **E** | ICPC Team Generation | `naq/2023/icpcteamgeneration` | `naq/2023/naq23.pdf` | [icpcteamgeneration](https://open.kattis.com/problems/icpcteamgeneration) | [31305](https://solved.ac/problems/31305) | | **F** | Is Y a Vowel? | `naq/2023/isyavowel` | `naq/2023/naq23.pdf` | [isyavowel](https://open.kattis.com/problems/isyavowel) | [31306](https://solved.ac/problems/31306) | | **G** | Lines Per Hour | `naq/2023/linesperhour` | `naq/2023/naq23.pdf` | [linesperhour](https://open.kattis.com/problems/linesperhour) | [31307](https://solved.ac/problems/31307) | | **H** | Magnesium Supplementation | `naq/2023/magnesiumsupplementation` | `naq/2023/naq23.pdf` | [magnesiumsupplementation](https://open.kattis.com/problems/magnesiumsupplementation) | [31308](https://solved.ac/problems/31308) | | **I** | Missing Number | `naq/2023/missingnumber` | `naq/2023/naq23.pdf` | [missingnumber2](https://open.kattis.com/problems/missingnumber2) | [31309](https://solved.ac/problems/31309) | | **J** | Tip of Your Tongue | `naq/2023/tipofyourtongue` | `naq/2023/naq23.pdf` | [tipofyourtongue](https://open.kattis.com/problems/tipofyourtongue) | [31310](https://solved.ac/problems/31310) | | **K** | Very Important Edge | `naq/2023/veryimportantedge` | `naq/2023/naq23.pdf` | [veryimportantedge](https://open.kattis.com/problems/veryimportantedge) | [31311](https://solved.ac/problems/31311) | | **L** | Water Journal | `naq/2023/waterjournal` | `naq/2023/naq23.pdf` | [waterjournal](https://open.kattis.com/problems/waterjournal) | [31312](https://solved.ac/problems/31312) | --- ## North America Qualifier (2024) - **Contest Slug:** `naq` - **Year:** 2024 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2024%20ICPC%20North%20America%20Qualifier) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4310) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------- | :------------------------------- | :--------------------- | :-----------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Balatro | `naq/2024/balatro` | `naq/2024/naq24.pdf` | [balatro](https://open.kattis.com/problems/balatro) | [32496](https://solved.ac/problems/32496) | | **B** | Bikes and Barricades | `naq/2024/bikesandbarricades` | `naq/2024/naq24.pdf` | [bikesandbarricades](https://open.kattis.com/problems/bikesandbarricades) | [32497](https://solved.ac/problems/32497) | | **C** | Call for Problems | `naq/2024/callforproblems` | `naq/2024/naq24.pdf` | [callforproblems](https://open.kattis.com/problems/callforproblems) | [32498](https://solved.ac/problems/32498) | | **D** | Colorful Trees | `naq/2024/colorfultrees` | `naq/2024/naq24.pdf` | [colorfultrees](https://open.kattis.com/problems/colorfultrees) | [32499](https://solved.ac/problems/32499) | | **E** | Dishonest Lottery | `naq/2024/dishonestlottery` | `naq/2024/naq24.pdf` | [dishonestlottery](https://open.kattis.com/problems/dishonestlottery) | [32500](https://solved.ac/problems/32500) | | **F** | Ellipse Eclipse | `naq/2024/ellipseeclipse` | `naq/2024/naq24.pdf` | [ellipseeclipse](https://open.kattis.com/problems/ellipseeclipse) | [32501](https://solved.ac/problems/32501) | | **G** | Gears and Axles | `naq/2024/gearsandaxles` | `naq/2024/naq24.pdf` | [gearsandaxles](https://open.kattis.com/problems/gearsandaxles) | [32502](https://solved.ac/problems/32502) | | **H** | Genetic Reconstruction | `naq/2024/geneticreconstruction` | `naq/2024/naq24.pdf` | [geneticreconstruction](https://open.kattis.com/problems/geneticreconstruction) | [32503](https://solved.ac/problems/32503) | | **I** | Light Up | `naq/2024/lightup` | `naq/2024/naq24.pdf` | [lightup](https://open.kattis.com/problems/lightup) | [32504](https://solved.ac/problems/32504) | | **J** | Menger Sponge | `naq/2024/mengersponge` | `naq/2024/naq24.pdf` | [mengersponge](https://open.kattis.com/problems/mengersponge) | [32505](https://solved.ac/problems/32505) | | **K** | Rhythm Flow | `naq/2024/rhythmflow` | `naq/2024/naq24.pdf` | [rhythmflow](https://open.kattis.com/problems/rhythmflow) | [32506](https://solved.ac/problems/32506) | | **L** | Snake | `naq/2024/snake` | `naq/2024/naq24.pdf` | [snake](https://open.kattis.com/problems/snake) | [32507](https://solved.ac/problems/32507) | --- ## North America Qualifier (2025) - **Contest Slug:** `naq` - **Year:** 2025 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2025%20ICPC%20North%20America%20Qualifier) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4589) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------------- | :----------------------------------- | :--------------------- | :-------------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Art Installation | `naq/2025/artinstallation` | `naq/2025/naq25.pdf` | [artinstallation](https://open.kattis.com/problems/artinstallation) | [34635](https://solved.ac/problems/34635) | | **B** | Backup Towers | `naq/2025/backuptowers` | `naq/2025/naq25.pdf` | [backuptowers](https://open.kattis.com/problems/backuptowers) | [34636](https://solved.ac/problems/34636) | | **C** | Call for Problems, Round 2 | `naq/2025/callforproblemsround2` | `naq/2025/naq25.pdf` | [callforproblemsround2](https://open.kattis.com/problems/callforproblemsround2) | [34637](https://solved.ac/problems/34637) | | **D** | Carl's Maze-Solving Algorithm | `naq/2025/carlsmazesolvingalgorithm` | `naq/2025/naq25.pdf` | [carlsmazesolvingalgorithm](https://open.kattis.com/problems/carlsmazesolvingalgorithm) | [34638](https://solved.ac/problems/34638) | | **E** | Curling | `naq/2025/curling` | `naq/2025/naq25.pdf` | [curling](https://open.kattis.com/problems/curling) | [34639](https://solved.ac/problems/34639) | | **F** | Figure Skating Judging | `naq/2025/figureskatingjudging` | `naq/2025/naq25.pdf` | [figureskatingjudging](https://open.kattis.com/problems/figureskatingjudging) | [34640](https://solved.ac/problems/34640) | | **G** | Mingle | `naq/2025/mingle` | `naq/2025/naq25.pdf` | [mingle](https://open.kattis.com/problems/mingle) | [34641](https://solved.ac/problems/34641) | | **H** | Seesaw | `naq/2025/seesaw` | `naq/2025/naq25.pdf` | [seesaw](https://open.kattis.com/problems/seesaw) | [34642](https://solved.ac/problems/34642) | | **I** | Star Guardians | `naq/2025/starguardians` | `naq/2025/naq25.pdf` | [starguardians](https://open.kattis.com/problems/starguardians) | [34643](https://solved.ac/problems/34643) | | **J** | Ten Player Bingo | `naq/2025/tenplayerbingo` | `naq/2025/naq25.pdf` | [tenplayerbingo](https://open.kattis.com/problems/tenplayerbingo) | [34644](https://solved.ac/problems/34644) | | **K** | Treasure Hunt | `naq/2025/treasurehunt2` | `naq/2025/naq25.pdf` | [treasurehunt2](https://open.kattis.com/problems/treasurehunt2) | [34645](https://solved.ac/problems/34645) | | **L** | Triple Jump | `naq/2025/triplejump` | `naq/2025/naq25.pdf` | [triplejump](https://open.kattis.com/problems/triplejump) | [34646](https://solved.ac/problems/34646) | | **M** | Utopia Relationships | `naq/2025/utopiarelationships` | `naq/2025/naq25.pdf` | [utopiarelationships](https://open.kattis.com/problems/utopiarelationships) | [34647](https://solved.ac/problems/34647) | --- ## North America Qualifier (2026) - **Contest Slug:** `naq` - **Year:** 2026 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2026%20ICPC%20North%20America%20Qualifier) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------- | :------------------------------ | :--------------------- | :---------------------------------------------------------------------------: | :-------: | | **A** | The n Days of Christmas | `naq/2026/thendaysofchristmas2` | `naq/2026/naq26.pdf` | [thendaysofchristmas2](https://open.kattis.com/problems/thendaysofchristmas2) | - | | **B** | Airtime | `naq/2026/airtime` | `naq/2026/naq26.pdf` | [airtime](https://open.kattis.com/problems/airtime) | - | | **C** | Babylon | `naq/2026/babylon` | `naq/2026/naq26.pdf` | [babylon](https://open.kattis.com/problems/babylon) | - | | **D** | Brownie Cutting | `naq/2026/browniecutting` | `naq/2026/naq26.pdf` | [browniecutting](https://open.kattis.com/problems/browniecutting) | - | | **E** | Espresso Macchiato | `naq/2026/espressomacchiato` | `naq/2026/naq26.pdf` | [espressomacchiato](https://open.kattis.com/problems/espressomacchiato) | - | | **F** | Fairytale | `naq/2026/fairytale` | `naq/2026/naq26.pdf` | [fairytale](https://open.kattis.com/problems/fairytale) | - | | **G** | Last Dance | `naq/2026/lastdance` | `naq/2026/naq26.pdf` | [lastdance](https://open.kattis.com/problems/lastdance) | - | | **H** | My System | `naq/2026/mysystem` | `naq/2026/naq26.pdf` | [mysystem](https://open.kattis.com/problems/mysystem) | - | | **I** | Only One Order | `naq/2026/onlyoneorder` | `naq/2026/naq26.pdf` | [onlyoneorder](https://open.kattis.com/problems/onlyoneorder) | - | | **J** | Regarde! | `naq/2026/regarde` | `naq/2026/naq26.pdf` | [regarde](https://open.kattis.com/problems/regarde) | - | | **K** | Six Seven | `naq/2026/sixseven3` | `naq/2026/naq26.pdf` | [sixseven3](https://open.kattis.com/problems/sixseven3) | - | | **L** | Stardust Curry | `naq/2026/stardustcurry` | `naq/2026/naq26.pdf` | [stardustcurry](https://open.kattis.com/problems/stardustcurry) | - | | **M** | Tourism Balance | `naq/2026/tourismbalance` | `naq/2026/naq26.pdf` | [tourismbalance](https://open.kattis.com/problems/tourismbalance) | - | --- ## North American Big-South super region (2022) - **Contest Slug:** `nasouth` - **Year:** 2022 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2022%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2025%2C%202023%29) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :-------------------------------------- | :------------------------- | :-----------------------------------------------------------------------------------: | :-------: | | **A** | Fading Wind | `nasouth/2022/fadingwind` | `nasouth/2022/seusad1.pdf` | [fadingwind](https://open.kattis.com/problems/fadingwind) | - | | **B** | Creative Accounting | `nasouth/2022/creativeaccounting` | `nasouth/2022/seusad1.pdf` | [creativeaccounting](https://open.kattis.com/problems/creativeaccounting) | - | | **C** | Chocolate Chip Fabrication | `nasouth/2022/chocolatechipfabrication` | `nasouth/2022/seusad1.pdf` | [chocolatechipfabrication](https://open.kattis.com/problems/chocolatechipfabrication) | - | | **D** | Counting Satellites | `nasouth/2022/countingsatellites` | `nasouth/2022/seusad1.pdf` | [countingsatellites](https://open.kattis.com/problems/countingsatellites) | - | | **E** | Exponent Exchange | `nasouth/2022/exponentexchange` | `nasouth/2022/seusad1.pdf` | [exponentexchange](https://open.kattis.com/problems/exponentexchange) | - | | **F** | Family Visits | `nasouth/2022/familyvisits` | `nasouth/2022/seusad1.pdf` | [familyvisits](https://open.kattis.com/problems/familyvisits) | - | | **G** | Eroding Pillars | `nasouth/2022/erodingpillars` | `nasouth/2022/seusad1.pdf` | [erodingpillars](https://open.kattis.com/problems/erodingpillars) | - | | **H** | Triangle Containment | `nasouth/2022/trianglecontainment` | `nasouth/2022/seusad1.pdf` | [trianglecontainment](https://open.kattis.com/problems/trianglecontainment) | - | | **I** | Color Tubes | `nasouth/2022/colortubes` | `nasouth/2022/seusad1.pdf` | [colortubes](https://open.kattis.com/problems/colortubes) | - | | **J** | Three Dice | `nasouth/2022/threedice` | `nasouth/2022/seusad1.pdf` | [threedice](https://open.kattis.com/problems/threedice) | - | | **K** | Lone Knight | `nasouth/2022/loneknight` | `nasouth/2022/seusad1.pdf` | [loneknight](https://open.kattis.com/problems/loneknight) | - | | **L** | Branch Manager | `nasouth/2022/branchmanager` | `nasouth/2022/seusad1.pdf` | [branchmanager](https://open.kattis.com/problems/branchmanager) | - | | **M** | Alchemy | `nasouth/2022/alchemy` | `nasouth/2022/seusad1.pdf` | [alchemy2](https://open.kattis.com/problems/alchemy2) | - | --- ## North American Big-South super region (2023) - **Contest Slug:** `nasouth` - **Year:** 2023 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2023%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2024%2C%202024%29) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------ | :------------------------------------------- | :--------------------------- | :---------------------------------------------------------------------------------------------: | :-------: | | **A** | ABC String | `nasouth/2023/abcstring` | `nasouth/2023/seusad1.pdf` | [abcstring](https://open.kattis.com/problems/abcstring) | - | | **B** | Balanced Tree Path | `nasouth/2023/balancedtreepath` | `nasouth/2023/seusad1.pdf` | [balancedtreepath](https://open.kattis.com/problems/balancedtreepath) | - | | **C** | Cramming for Finals | `nasouth/2023/crammingforfinals` | `nasouth/2023/seusad1.pdf` | [crammingforfinals](https://open.kattis.com/problems/crammingforfinals) | - | | **D** | Ordered Problem Set | `nasouth/2023/orderedproblemset` | `nasouth/2023/seusad1.pdf` | [orderedproblemset](https://open.kattis.com/problems/orderedproblemset) | - | | **E** | Eccentric Excursion | `nasouth/2023/eccentricexcursion` | `nasouth/2023/seusad1.pdf` | [eccentricexcursion](https://open.kattis.com/problems/eccentricexcursion) | - | | **F** | Matrix Fraud | `nasouth/2023/matrixfraud` | `nasouth/2023/seusad1.pdf` | [matrixfraud](https://open.kattis.com/problems/matrixfraud) | - | | **G** | On-Call Team | `nasouth/2023/oncallteam` | `nasouth/2023/seusad1.pdf` | [oncallteam](https://open.kattis.com/problems/oncallteam) | - | | **H** | Range Editing | `nasouth/2023/rangeediting` | `nasouth/2023/seusad1.pdf` | [rangeediting](https://open.kattis.com/problems/rangeediting) | - | | **I** | Item Selection | `nasouth/2023/itemselection` | `nasouth/2023/seusad1.pdf` | [itemselection](https://open.kattis.com/problems/itemselection) | - | | **J** | Sequence Guessing | `nasouth/2023/sequenceguessing` | `nasouth/2023/seusad1.pdf` | [sequenceguessing](https://open.kattis.com/problems/sequenceguessing) | - | | **K** | Streets Behind | `nasouth/2023/streetsbehind` | `nasouth/2023/seusad1.pdf` | [streetsbehind](https://open.kattis.com/problems/streetsbehind) | - | | **L** | Segment Drawing | `nasouth/2023/segmentdrawing` | `nasouth/2023/seusad1.pdf` | [segmentdrawing](https://open.kattis.com/problems/segmentdrawing) | - | | **M** | Champernowne Verification | `nasouth/2023/champernowneverification` | `nasouth/2023/seusad1.pdf` | [champernowneverification](https://open.kattis.com/problems/champernowneverification) | - | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------ | :------------------------------------------- | :--------------------------- | :---------------------------------------------------------------------------------------------: | :-------: | | **A** | ABC String | `nasouth/2023/abcstring` | `nasouth/2023/seusad2-3.pdf` | [abcstring](https://open.kattis.com/problems/abcstring) | - | | **B** | Balanced Tree Path | `nasouth/2023/balancedtreepath` | `nasouth/2023/seusad2-3.pdf` | [balancedtreepath](https://open.kattis.com/problems/balancedtreepath) | - | | **C** | A Cappella Recording | `nasouth/2023/acappellarecording` | `nasouth/2023/seusad2-3.pdf` | [acappellarecording](https://open.kattis.com/problems/acappellarecording) | - | | **D** | Ordered Problem Set | `nasouth/2023/orderedproblemset` | `nasouth/2023/seusad2-3.pdf` | [orderedproblemset](https://open.kattis.com/problems/orderedproblemset) | - | | **E** | Acceptable Seating Arrangements | `nasouth/2023/acceptableseatingarrangements` | `nasouth/2023/seusad2-3.pdf` | [acceptableseatingarrangements](https://open.kattis.com/problems/acceptableseatingarrangements) | - | | **F** | Four Die Rolls | `nasouth/2023/fourdierolls` | `nasouth/2023/seusad2-3.pdf` | [fourdierolls](https://open.kattis.com/problems/fourdierolls) | - | | **G** | Rampant Growth | `nasouth/2023/rampantgrowth` | `nasouth/2023/seusad2-3.pdf` | [rampantgrowth](https://open.kattis.com/problems/rampantgrowth) | - | | **H** | Triple Sevens | `nasouth/2023/triplesevens` | `nasouth/2023/seusad2-3.pdf` | [triplesevens](https://open.kattis.com/problems/triplesevens) | - | | **I** | Item Selection | `nasouth/2023/itemselection` | `nasouth/2023/seusad2-3.pdf` | [itemselection](https://open.kattis.com/problems/itemselection) | - | | **J** | Sequence Guessing | `nasouth/2023/sequenceguessing` | `nasouth/2023/seusad2-3.pdf` | [sequenceguessing](https://open.kattis.com/problems/sequenceguessing) | - | | **K** | Streets Behind | `nasouth/2023/streetsbehind` | `nasouth/2023/seusad2-3.pdf` | [streetsbehind](https://open.kattis.com/problems/streetsbehind) | - | | **L** | Training | `nasouth/2023/training` | `nasouth/2023/seusad2-3.pdf` | [training](https://open.kattis.com/problems/training) | - | | **M** | Champernowne Verification | `nasouth/2023/champernowneverification` | `nasouth/2023/seusad2-3.pdf` | [champernowneverification](https://open.kattis.com/problems/champernowneverification) | - | --- ## North American Big-South super region (2024) - **Contest Slug:** `nasouth` - **Year:** 2024 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2024%20ICPC%20South%20Central%2C%20South%20East%20and%20Mid%20Atlantic%20Regional%20%28November%2016%2C%202024%29) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------- | :-------------------------------------- | :--------------------------- | :-----------------------------------------------------------------------------------: | :-------: | | **A** | Welcome Sign | `nasouth/2024/welcomesign` | `nasouth/2024/seusad1-2.pdf` | [welcomesign](https://open.kattis.com/problems/welcomesign) | - | | **B** | Triangles of a Square | `nasouth/2024/trianglesofasquare` | `nasouth/2024/seusad1-2.pdf` | [trianglesofasquare](https://open.kattis.com/problems/trianglesofasquare) | - | | **C** | City Bike | `nasouth/2024/citybike` | `nasouth/2024/seusad1-2.pdf` | [citybike](https://open.kattis.com/problems/citybike) | - | | **D** | Duel of Cards | `nasouth/2024/duelofcards` | `nasouth/2024/seusad1-2.pdf` | [duelofcards](https://open.kattis.com/problems/duelofcards) | - | | **E** | Elevated Rails | `nasouth/2024/elevatedrails` | `nasouth/2024/seusad1-2.pdf` | [elevatedrails](https://open.kattis.com/problems/elevatedrails) | - | | **F** | Finding Keys | `nasouth/2024/findingkeys` | `nasouth/2024/seusad1-2.pdf` | [findingkeys](https://open.kattis.com/problems/findingkeys) | - | | **G** | Intergalactic Team | `nasouth/2024/intergalacticteam` | `nasouth/2024/seusad1-2.pdf` | [intergalacticteam](https://open.kattis.com/problems/intergalacticteam) | - | | **H** | Herb Mixing | `nasouth/2024/herbmixing` | `nasouth/2024/seusad1-2.pdf` | [herbmixing](https://open.kattis.com/problems/herbmixing) | - | | **I** | Island Memories | `nasouth/2024/islandmemories` | `nasouth/2024/seusad1-2.pdf` | [islandmemories](https://open.kattis.com/problems/islandmemories) | - | | **J** | Perfect Squares | `nasouth/2024/perfectsquares` | `nasouth/2024/seusad1-2.pdf` | [perfectsquares](https://open.kattis.com/problems/perfectsquares) | - | | **K** | Optimized Cheating | `nasouth/2024/optimizedcheating` | `nasouth/2024/seusad1-2.pdf` | [optimizedcheating](https://open.kattis.com/problems/optimizedcheating) | - | | **L** | Pianissimo | `nasouth/2024/pianissimo` | `nasouth/2024/seusad1-2.pdf` | [pianissimo](https://open.kattis.com/problems/pianissimo) | - | | **M** | Virtual Reality Playspace | `nasouth/2024/virtualrealityplayspace` | `nasouth/2024/seusad1-2.pdf` | [vrplayspace](https://open.kattis.com/problems/vrplayspace) | - | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------- | :-------------------------------------- | :--------------------------- | :-----------------------------------------------------------------------------------: | :-------: | | **A** | Welcome Sign | `nasouth/2024/welcomesign` | `nasouth/2024/seusad2-4.pdf` | [welcomesign](https://open.kattis.com/problems/welcomesign) | - | | **B** | Triangles of a Square | `nasouth/2024/trianglesofasquare` | `nasouth/2024/seusad2-4.pdf` | [trianglesofasquare](https://open.kattis.com/problems/trianglesofasquare) | - | | **C** | Traffic Lights | `nasouth/2024/trafficlights` | `nasouth/2024/seusad2-4.pdf` | [trafficlights](https://open.kattis.com/problems/trafficlights) | - | | **D** | Duel of Cards | `nasouth/2024/duelofcards` | `nasouth/2024/seusad2-4.pdf` | [duelofcards](https://open.kattis.com/problems/duelofcards) | - | | **E** | Which One is Larger | `nasouth/2024/whichoneislarger` | `nasouth/2024/seusad2-4.pdf` | [whichoneislarger](https://open.kattis.com/problems/whichoneislarger) | - | | **F** | Office Building | `nasouth/2024/officebuilding` | `nasouth/2024/seusad2-4.pdf` | [officebuilding](https://open.kattis.com/problems/officebuilding) | - | | **G** | Intergalactic Team | `nasouth/2024/intergalacticteam` | `nasouth/2024/seusad2-4.pdf` | [intergalacticteam](https://open.kattis.com/problems/intergalacticteam) | - | | **H** | Herb Mixing | `nasouth/2024/herbmixing` | `nasouth/2024/seusad2-4.pdf` | [herbmixing](https://open.kattis.com/problems/herbmixing) | - | | **I** | Island Memories | `nasouth/2024/islandmemories` | `nasouth/2024/seusad2-4.pdf` | [islandmemories](https://open.kattis.com/problems/islandmemories) | - | | **J** | Perfect Squares | `nasouth/2024/perfectsquares` | `nasouth/2024/seusad2-4.pdf` | [perfectsquares](https://open.kattis.com/problems/perfectsquares) | - | | **K** | Optimized Cheating | `nasouth/2024/optimizedcheating` | `nasouth/2024/seusad2-4.pdf` | [optimizedcheating](https://open.kattis.com/problems/optimizedcheating) | - | | **L** | Pianissimo | `nasouth/2024/pianissimo` | `nasouth/2024/seusad2-4.pdf` | [pianissimo](https://open.kattis.com/problems/pianissimo) | - | | **M** | Memories of Passport Stamps | `nasouth/2024/memoriesofpassportstamps` | `nasouth/2024/seusad2-4.pdf` | [memoriesofpassportstamps](https://open.kattis.com/problems/memoriesofpassportstamps) | - | --- ## North American Big-South super region (2025) - **Contest Slug:** `nasouth` - **Year:** 2025 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2025%20ICPC%20South%20Central%2C%20South%20East%20and%20Mid%20Atlantic%20Regional%20%28November%208%2C%202025%29) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------------- | :--------------------------------------- | :--------------------------- | :-------------------------------------------------------------------------------------: | :-------: | | **A** | Blindbottles | `nasouth/2025/blindbottles` | `nasouth/2025/scdiv1-1.pdf` | [blindbottles](https://open.kattis.com/problems/blindbottles) | - | | **B** | Breakout | `nasouth/2025/breakout` | `nasouth/2025/scdiv1-1.pdf` | [breakout2](https://open.kattis.com/problems/breakout2) | - | | **C** | Galaxygovernance | `nasouth/2025/galaxygovernance` | `nasouth/2025/scdiv1-1.pdf` | [galaxygovernance](https://open.kattis.com/problems/galaxygovernance) | - | | **D** | Gameofnines | `nasouth/2025/gameofnines` | `nasouth/2025/scdiv1-1.pdf` | [gameofnines](https://open.kattis.com/problems/gameofnines) | - | | **E** | Guidgenerator | `nasouth/2025/guidgenerator` | `nasouth/2025/scdiv1-1.pdf` | [guidgenerator](https://open.kattis.com/problems/guidgenerator) | - | | **F** | Inazumacubedevice | `nasouth/2025/inazumacubedevice` | `nasouth/2025/scdiv1-1.pdf` | [inazumacubedevice](https://open.kattis.com/problems/inazumacubedevice) | - | | **G** | Manhattaninterference | `nasouth/2025/manhattaninterference` | `nasouth/2025/scdiv1-1.pdf` | [manhattaninterference](https://open.kattis.com/problems/manhattaninterference) | - | | **H** | Meetingfreefridays | `nasouth/2025/meetingfreefridays` | `nasouth/2025/scdiv1-1.pdf` | [meetingfreefridays](https://open.kattis.com/problems/meetingfreefridays) | - | | **I** | Memoriesofpassportcontrol | `nasouth/2025/memoriesofpassportcontrol` | `nasouth/2025/scdiv1-1.pdf` | [memoriesofpassportcontrol](https://open.kattis.com/problems/memoriesofpassportcontrol) | - | | **J** | Moonlittimemachine | `nasouth/2025/moonlittimemachine` | `nasouth/2025/scdiv1-1.pdf` | [moonlittimemachine](https://open.kattis.com/problems/moonlittimemachine) | - | | **K** | Muchroomformushrooms | `nasouth/2025/muchroomformushrooms` | `nasouth/2025/scdiv1-1.pdf` | [muchroomformushrooms](https://open.kattis.com/problems/muchroomformushrooms) | - | | **L** | Onewayonly | `nasouth/2025/onewayonly` | `nasouth/2025/scdiv1-1.pdf` | [onewayonly](https://open.kattis.com/problems/onewayonly) | - | | **M** | Orchardfence | `nasouth/2025/orchardfence` | `nasouth/2025/scdiv1-1.pdf` | [orchardfence](https://open.kattis.com/problems/orchardfence) | - | | **N** | Photoencoding | `nasouth/2025/photoencoding` | `nasouth/2025/scdiv1-1.pdf` | [photoencoding](https://open.kattis.com/problems/photoencoding) | - | | **O** | Rowsofstars | `nasouth/2025/rowsofstars` | `nasouth/2025/scdiv1-1.pdf` | [rowsofstars](https://open.kattis.com/problems/rowsofstars) | - | | **P** | Shinjukustation | `nasouth/2025/shinjukustation` | `nasouth/2025/scdiv1-1.pdf` | [shinjukustation](https://open.kattis.com/problems/shinjukustation) | - | | **Q** | Snakeystring | `nasouth/2025/snakeystring` | `nasouth/2025/scdiv1-1.pdf` | [snakeystring](https://open.kattis.com/problems/snakeystring) | - | | **R** | Swapforpalindrome | `nasouth/2025/swapforpalindrome` | `nasouth/2025/scdiv1-1.pdf` | [swapforpalindrome](https://open.kattis.com/problems/swapforpalindrome) | - | | **S** | Treeracing | `nasouth/2025/treeracing` | `nasouth/2025/scdiv1-1.pdf` | [treeracing](https://open.kattis.com/problems/treeracing) | - | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------------- | :--------------------------------------- | :--------------------------- | :-------------------------------------------------------------------------------------: | :-------: | | **A** | Snakey String | `nasouth/2025/snakeystring` | `nasouth/2025/seusad2-5.pdf` | [snakeystring](https://open.kattis.com/problems/snakeystring) | - | | **B** | Blind Bottles | `nasouth/2025/blindbottles` | `nasouth/2025/seusad2-5.pdf` | [blindbottles](https://open.kattis.com/problems/blindbottles) | - | | **C** | One Way Only | `nasouth/2025/onewayonly` | `nasouth/2025/seusad2-5.pdf` | [onewayonly](https://open.kattis.com/problems/onewayonly) | - | | **D** | GUID Generator | `nasouth/2025/guidgenerator` | `nasouth/2025/seusad2-5.pdf` | [guidgenerator](https://open.kattis.com/problems/guidgenerator) | - | | **E** | Photo Encoding | `nasouth/2025/photoencoding` | `nasouth/2025/seusad2-5.pdf` | [photoencoding](https://open.kattis.com/problems/photoencoding) | - | | **F** | Breakout | `nasouth/2025/breakout` | `nasouth/2025/seusad2-5.pdf` | [breakout2](https://open.kattis.com/problems/breakout2) | - | | **G** | Shinjuku Station | `nasouth/2025/shinjukustation` | `nasouth/2025/seusad2-5.pdf` | [shinjukustation](https://open.kattis.com/problems/shinjukustation) | - | | **H** | Memories of Passport Control | `nasouth/2025/memoriesofpassportcontrol` | `nasouth/2025/seusad2-5.pdf` | [memoriesofpassportcontrol](https://open.kattis.com/problems/memoriesofpassportcontrol) | - | | **I** | Inazuma Cube Device | `nasouth/2025/inazumacubedevice` | `nasouth/2025/seusad2-5.pdf` | [inazumacubedevice](https://open.kattis.com/problems/inazumacubedevice) | - | | **J** | Game of Nines | `nasouth/2025/gameofnines` | `nasouth/2025/seusad2-5.pdf` | [gameofnines](https://open.kattis.com/problems/gameofnines) | - | | **K** | Swap for Palindrome | `nasouth/2025/swapforpalindrome` | `nasouth/2025/seusad2-5.pdf` | [swapforpalindrome](https://open.kattis.com/problems/swapforpalindrome) | - | | **L** | Moonlit Time Machine | `nasouth/2025/moonlittimemachine` | `nasouth/2025/seusad2-5.pdf` | [moonlittimemachine](https://open.kattis.com/problems/moonlittimemachine) | - | | **M** | Much Room for Mushrooms | `nasouth/2025/muchroomformushrooms` | `nasouth/2025/seusad2-5.pdf` | [muchroomformushrooms](https://open.kattis.com/problems/muchroomformushrooms) | - | --- ## North Central North America Regional Contest (2013) - **Contest Slug:** `ncna` - **Year:** 2013 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1231) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------------- | :---------------- | :---------------------------------- | :----: | :-------------------------------------: | | **A** | Bowling Score Assistant | `ncna/2013/A` | `ncna/2013/regional_2013_final.pdf` | - | [9939](https://solved.ac/problems/9939) | | **B** | Spectrum | `ncna/2013/B` | `ncna/2013/regional_2013_final.pdf` | - | [9940](https://solved.ac/problems/9940) | | **C** | One Move from Towers of Hanoi | `ncna/2013/C` | `ncna/2013/regional_2013_final.pdf` | - | [9941](https://solved.ac/problems/9941) | | **D** | Four-Tower Towers of Hanoi | `ncna/2013/D` | `ncna/2013/regional_2013_final.pdf` | - | [9942](https://solved.ac/problems/9942) | | **E** | Light Switches | `ncna/2013/E` | `ncna/2013/regional_2013_final.pdf` | - | [9943](https://solved.ac/problems/9943) | | **F** | Full Board | `ncna/2013/F` | `ncna/2013/regional_2013_final.pdf` | - | [9944](https://solved.ac/problems/9944) | | **G** | Centroid of Point Masses | `ncna/2013/G` | `ncna/2013/regional_2013_final.pdf` | - | [9945](https://solved.ac/problems/9945) | | **H** | Strings with Same Letters | `ncna/2013/H` | `ncna/2013/regional_2013_final.pdf` | - | [9946](https://solved.ac/problems/9946) | --- ## North Central North America Regional Contest (2014) - **Contest Slug:** `ncna` - **Year:** 2014 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1302) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------------------- | :---------------- | :---------------------------------- | :----: | :---------------------------------------: | | **A** | The Binary Search Efficiency Doubter | `ncna/2014/A` | `ncna/2014/regional_2014_final.pdf` | - | [10440](https://solved.ac/problems/10440) | | **B** | Preorder Traversals | `ncna/2014/B` | `ncna/2014/regional_2014_final.pdf` | - | [10441](https://solved.ac/problems/10441) | | **C** | Rank Order | `ncna/2014/C` | `ncna/2014/regional_2014_final.pdf` | - | [10442](https://solved.ac/problems/10442) | | **D** | Server | `ncna/2014/D` | `ncna/2014/regional_2014_final.pdf` | - | [10409](https://solved.ac/problems/10409) | | **E** | Aquarium Tank | `ncna/2014/E` | `ncna/2014/regional_2014_final.pdf` | - | [10415](https://solved.ac/problems/10415) | | **F** | Restaurant Ratings | `ncna/2014/F` | `ncna/2014/regional_2014_final.pdf` | - | [10416](https://solved.ac/problems/10416) | | **G** | Locked Treasure | `ncna/2014/G` | `ncna/2014/regional_2014_final.pdf` | - | [10417](https://solved.ac/problems/10417) | | **H** | Continued Fractions | `ncna/2014/H` | `ncna/2014/regional_2014_final.pdf` | - | [10386](https://solved.ac/problems/10386) | | **I** | Anagram Pyramids | `ncna/2014/I` | `ncna/2014/regional_2014_final.pdf` | - | [10444](https://solved.ac/problems/10444) | --- ## North Central North America Regional Contest (2017) - **Contest Slug:** `ncna` - **Year:** 2017 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2017%20ACM%20ICPC%20North%20Central%20North%20America%20Regional%20Contest) | [Alternate](https://open.kattis.com/problem-sources/2017%20ICPC%20East-Central%20NA%20Regional%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1944) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :------------------------- | :--------------------------- | :---------------------------------------------------------------: | :---------------------------------------: | | **A** | Stoichiometry | `ncna/2017/stoichiometry` | `ncna/2017/NCNA17slides.pdf` | [stoichiometry](https://open.kattis.com/problems/stoichiometry) | [16384](https://solved.ac/problems/16384) | | **B** | Pokemon Go Go | `ncna/2017/pokemongogo` | `ncna/2017/NCNA17slides.pdf` | [pokemongogo](https://open.kattis.com/problems/pokemongogo) | [16385](https://solved.ac/problems/16385) | | **C** | Urban Design | `ncna/2017/urbandesign` | `ncna/2017/NCNA17slides.pdf` | [urbandesign](https://open.kattis.com/problems/urbandesign) | [16386](https://solved.ac/problems/16386) | | **D** | Smooth Array | `ncna/2017/smootharray` | `ncna/2017/NCNA17slides.pdf` | [smootharray](https://open.kattis.com/problems/smootharray) | [16387](https://solved.ac/problems/16387) | | **E** | Is-A? Has-A? Who Knowz-A? | `ncna/2017/IsAHasA` | `ncna/2017/NCNA17slides.pdf` | [isahasa](https://open.kattis.com/problems/isahasa) | [16388](https://solved.ac/problems/16388) | | **F** | Atlantis | `ncna/2017/atlantis` | `ncna/2017/NCNA17slides.pdf` | [atlantis](https://open.kattis.com/problems/atlantis) | [16389](https://solved.ac/problems/16389) | | **G** | Sheba's Amoebas | `ncna/2017/amoebas` | `ncna/2017/NCNA17slides.pdf` | [amoebas](https://open.kattis.com/problems/amoebas) | [16390](https://solved.ac/problems/16390) | | **H** | Zebras and Ocelots | `ncna/2017/zebrasocelots` | `ncna/2017/NCNA17slides.pdf` | [zebrasocelots](https://open.kattis.com/problems/zebrasocelots) | [16391](https://solved.ac/problems/16391) | | **I** | Racing Around the Alphabet | `ncna/2017/racingalphabet` | `ncna/2017/NCNA17slides.pdf` | [racingalphabet](https://open.kattis.com/problems/racingalphabet) | [16392](https://solved.ac/problems/16392) | | **J** | Lost Map | `ncna/2017/lostmap` | `ncna/2017/NCNA17slides.pdf` | [lostmap](https://open.kattis.com/problems/lostmap) | [16393](https://solved.ac/problems/16393) | --- ## North Central North America Regional Contest (2018) - **Contest Slug:** `ncna` - **Year:** 2018 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2018%20ACM-ICPC%20North%20Central%20North%20America%20Regional%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1955) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------ | :----------------------------------- | :------------------------ | :-----------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Pokegene | `ncna/2018/pokegene` | `ncna/2018/NCNA_2018.pdf` | [pokegene](https://open.kattis.com/problems/pokegene) | [16511](https://solved.ac/problems/16511) | | **B** | Maximum Subarrays | `ncna/2018/maximumsubarrays` | `ncna/2018/NCNA_2018.pdf` | [maximumsubarrays](https://open.kattis.com/problems/maximumsubarrays) | [16512](https://solved.ac/problems/16512) | | **C** | Rational Ratio | `ncna/2018/rationalratio` | `ncna/2018/NCNA_2018.pdf` | [rationalratio](https://open.kattis.com/problems/rationalratio) | [16513](https://solved.ac/problems/16513) | | **D** | Travel the Skies | `ncna/2018/traveltheskies` | `ncna/2018/NCNA_2018.pdf` | [traveltheskies](https://open.kattis.com/problems/traveltheskies) | [16514](https://solved.ac/problems/16514) | | **E** | Euler's Number | `ncna/2018/eulersnumber` | `ncna/2018/NCNA_2018.pdf` | [eulersnumber](https://open.kattis.com/problems/eulersnumber) | [16515](https://solved.ac/problems/16515) | | **F** | Lipschitz Constant | `ncna/2018/lipschitzconstant` | `ncna/2018/NCNA_2018.pdf` | [lipschitzconstant](https://open.kattis.com/problems/lipschitzconstant) | [16516](https://solved.ac/problems/16516) | | **G** | Tima goes to Xentopia | `ncna/2018/xentopia` | `ncna/2018/NCNA_2018.pdf` | [xentopia](https://open.kattis.com/problems/xentopia) | [16517](https://solved.ac/problems/16517) | | **H** | New Salaries | `ncna/2018/newsalaries` | `ncna/2018/NCNA_2018.pdf` | [newsalaries](https://open.kattis.com/problems/newsalaries) | [16518](https://solved.ac/problems/16518) | | **I** | Other Side | `ncna/2018/otherside` | `ncna/2018/NCNA_2018.pdf` | [otherside](https://open.kattis.com/problems/otherside) | [16519](https://solved.ac/problems/16519) | | **J** | Kaleidoscopic Palindromes | `ncna/2018/kaleidoscopicpalindromes` | `ncna/2018/NCNA_2018.pdf` | [kaleidoscopicpalindromes](https://open.kattis.com/problems/kaleidoscopicpalindromes) | [16520](https://solved.ac/problems/16520) | --- ## North Central North America Regional Contest (2020) - **Contest Slug:** `ncna` - **Year:** 2020 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2020-2021%20North%20Central%20North%20America%20and%20Southern%20California%20ICPC%20Regional%20Contest) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2457) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------ | :---------------------------- | :------------------------ | :---------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | LogDB | `ncna/2020/logdb` | `ncna/2020/NCNA_2020.pdf` | [logdb](https://open.kattis.com/problems/logdb) | [21163](https://solved.ac/problems/21163) | | **B** | Ride-Hailing | `ncna/2020/ridehailing` | `ncna/2020/NCNA_2020.pdf` | [ridehailing](https://open.kattis.com/problems/ridehailing) | [21164](https://solved.ac/problems/21164) | | **C** | Redundant Binary Notation | `ncna/2020/rbinary` | `ncna/2020/NCNA_2020.pdf` | [redundantbinarynotation](https://open.kattis.com/problems/redundantbinarynotation) | [21165](https://solved.ac/problems/21165) | | **D** | Substring Characters | `ncna/2020/substrings` | `ncna/2020/NCNA_2020.pdf` | [substringcharacters](https://open.kattis.com/problems/substringcharacters) | [21166](https://solved.ac/problems/21166) | | **E** | Curve Speed | `ncna/2020/curve` | `ncna/2020/NCNA_2020.pdf` | [curvespeed](https://open.kattis.com/problems/curvespeed) | [21167](https://solved.ac/problems/21167) | | **F** | Agamemnon's Odyssey | `ncna/2020/agamemnonsodyssey` | `ncna/2020/NCNA_2020.pdf` | [agamemnonsodyssey](https://open.kattis.com/problems/agamemnonsodyssey) | [21168](https://solved.ac/problems/21168) | | **G** | Safest Taxi | `ncna/2020/safesttaxi` | `ncna/2020/NCNA_2020.pdf` | [safesttaxi](https://open.kattis.com/problems/safesttaxi) | [21169](https://solved.ac/problems/21169) | | **H** | Digital Speedometer | `ncna/2020/speedometer` | `ncna/2020/NCNA_2020.pdf` | [digitalspeedometer](https://open.kattis.com/problems/digitalspeedometer) | [21170](https://solved.ac/problems/21170) | | **I** | Staggering to the Finish | `ncna/2020/stagger` | `ncna/2020/NCNA_2020.pdf` | [staggeringtothefinish](https://open.kattis.com/problems/staggeringtothefinish) | [21171](https://solved.ac/problems/21171) | | **J** | Ada Loveslaces | `ncna/2020/adaloveslaces` | `ncna/2020/NCNA_2020.pdf` | [adaloveslaces](https://open.kattis.com/problems/adaloveslaces) | [21172](https://solved.ac/problems/21172) | | **K** | ICPC Record Matching | `ncna/2020/recordmatching` | `ncna/2020/NCNA_2020.pdf` | [icpcrecordmatching](https://open.kattis.com/problems/icpcrecordmatching) | [21173](https://solved.ac/problems/21173) | | **L** | Codenames | `ncna/2020/codenames` | `ncna/2020/NCNA_2020.pdf` | [codenames2](https://open.kattis.com/problems/codenames2) | [21174](https://solved.ac/problems/21174) | --- ## Nordic Collegiate Programming Contest (2010) - **Contest Slug:** `ncpc` - **Year:** 2010 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202010) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/211) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :-------------------------- | :-------------------------------- | :----------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Succession | `ncpc/2010/succession` | `ncpc/2010/ncpc2010problems.pdf` | [succession](https://open.kattis.com/problems/succession) | [5021](https://solved.ac/problems/5021) | | **B** | Connect | `ncpc/2010/connect` | `ncpc/2010/ncpc2010problems.pdf` | [connect](https://open.kattis.com/problems/connect) | [5022](https://solved.ac/problems/5022) | | **C** | Borg Boogie | `ncpc/2010/borg` | `ncpc/2010/ncpc2010problems.pdf` | [borgboogie](https://open.kattis.com/problems/borgboogie) | [5023](https://solved.ac/problems/5023) | | **D** | Dirty Driving | `ncpc/2010/driving` | `ncpc/2010/ncpc2010problems.pdf` | [dirtydriving](https://open.kattis.com/problems/dirtydriving) | [5024](https://solved.ac/problems/5024) | | **E** | Doodling | `ncpc/2010/doodle` | `ncpc/2010/ncpc2010problems.pdf` | [doodling](https://open.kattis.com/problems/doodling) | [5025](https://solved.ac/problems/5025) | | **F** | Help a PhD candidate out! | `ncpc/2010/add-help` | `ncpc/2010/ncpc2010problems.pdf` | [helpaphd](https://open.kattis.com/problems/helpaphd) | [5026](https://solved.ac/problems/5026) | | **G** | Great Geek Game-show 3000! | `ncpc/2010/gameshow` | `ncpc/2010/ncpc2010problems.pdf` | [greatgeekgameshow](https://open.kattis.com/problems/greatgeekgameshow) | [5027](https://solved.ac/problems/5027) | | **H** | Polyomino Powers | `ncpc/2010/polyomino` | `ncpc/2010/ncpc2010problems.pdf` | [polyomino](https://open.kattis.com/problems/polyomino) | [5028](https://solved.ac/problems/5028) | | **I** | Statisticians | `ncpc/2010/statisticians` | `ncpc/2010/ncpc2010problems.pdf` | [statisticians](https://open.kattis.com/problems/statisticians) | [5029](https://solved.ac/problems/5029) | | **J** | Skyline | `ncpc/2010/skyline` | `ncpc/2010/ncpc2010problems.pdf` | [skyline](https://open.kattis.com/problems/skyline) | [5030](https://solved.ac/problems/5030) | | **K** | Around the track | `ncpc/2010/roundtrip` | `ncpc/2010/ncpc2010problems.pdf` | [aroundthetrack2](https://open.kattis.com/problems/aroundthetrack2) | [5031](https://solved.ac/problems/5031) | --- ## Nordic Collegiate Programming Contest (2013) - **Contest Slug:** `ncpc` - **Year:** 2013 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202013) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1146) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------- | :--------------------- | :------------------------------- | :-------------------------------------------------------------: | :-------------------------------------: | | **A** | Planting Trees | `ncpc/2013/trees` | `ncpc/2013/ncpc2013problems.pdf` | [plantingtrees](https://open.kattis.com/problems/plantingtrees) | [9237](https://solved.ac/problems/9237) | | **B** | Boiling Vegetables | `ncpc/2013/vegetables` | `ncpc/2013/ncpc2013problems.pdf` | [vegetables](https://open.kattis.com/problems/vegetables) | [9238](https://solved.ac/problems/9238) | | **C** | Number Trick | `ncpc/2013/trick` | `ncpc/2013/ncpc2013problems.pdf` | [trick](https://open.kattis.com/problems/trick) | [9239](https://solved.ac/problems/9239) | | **D** | Robert Hood | `ncpc/2013/roberthood` | `ncpc/2013/ncpc2013problems.pdf` | [roberthood](https://open.kattis.com/problems/roberthood) | [9240](https://solved.ac/problems/9240) | | **E** | Virus Replication | `ncpc/2013/virus` | `ncpc/2013/ncpc2013problems.pdf` | [virus](https://open.kattis.com/problems/virus) | [9241](https://solved.ac/problems/9241) | | **F** | Timebomb | `ncpc/2013/timebomb` | `ncpc/2013/ncpc2013problems.pdf` | [timebomb](https://open.kattis.com/problems/timebomb) | [9242](https://solved.ac/problems/9242) | | **G** | Erase Securely | `ncpc/2013/erase` | `ncpc/2013/ncpc2013problems.pdf` | [erase](https://open.kattis.com/problems/erase) | [9243](https://solved.ac/problems/9243) | | **H** | Pinball | `ncpc/2013/pinball` | `ncpc/2013/ncpc2013problems.pdf` | [pinball](https://open.kattis.com/problems/pinball) | [9244](https://solved.ac/problems/9244) | | **I** | Dance Reconstruction | `ncpc/2013/dance` | `ncpc/2013/ncpc2013problems.pdf` | [dance](https://open.kattis.com/problems/dance) | [9245](https://solved.ac/problems/9245) | | **J** | Dartboard | `ncpc/2013/dartboard` | `ncpc/2013/ncpc2013problems.pdf` | [dartboard](https://open.kattis.com/problems/dartboard) | [9246](https://solved.ac/problems/9246) | | **K** | Cliff Walk | `ncpc/2013/cliffwalk` | `ncpc/2013/ncpc2013problems.pdf` | [cliffwalk](https://open.kattis.com/problems/cliffwalk) | [9247](https://solved.ac/problems/9247) | --- ## Nordic Collegiate Programming Contest (2014) - **Contest Slug:** `ncpc` - **Year:** 2014 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202014) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1284) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------- | :-------------------------- | :------------------------------- | :----------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Amanda Lounges | `ncpc/2014/amanda` | `ncpc/2014/ncpc2014problems.pdf` | [amanda](https://open.kattis.com/problems/amanda) | [10259](https://solved.ac/problems/10259) | | **B** | Basin City Surveillance | `ncpc/2014/basincity` | `ncpc/2014/ncpc2014problems.pdf` | [basincity](https://open.kattis.com/problems/basincity) | [10260](https://solved.ac/problems/10260) | | **C** | Catalan Square | `ncpc/2014/catalansquare` | `ncpc/2014/ncpc2014problems.pdf` | [catalansquare](https://open.kattis.com/problems/catalansquare) | [10261](https://solved.ac/problems/10261) | | **D** | Dice Game | `ncpc/2014/dicegame` | `ncpc/2014/ncpc2014problems.pdf` | [dicegame](https://open.kattis.com/problems/dicegame) | [10262](https://solved.ac/problems/10262) | | **E** | Opening Ceremony | `ncpc/2014/ceremony` | `ncpc/2014/ncpc2014problems.pdf` | [ceremony](https://open.kattis.com/problems/ceremony) | [10263](https://solved.ac/problems/10263) | | **F** | Particle Swapping | `ncpc/2014/particles` | `ncpc/2014/ncpc2014problems.pdf` | [particles](https://open.kattis.com/problems/particles) | [10264](https://solved.ac/problems/10264) | | **G** | Outing | `ncpc/2014/outing` | `ncpc/2014/ncpc2014problems.pdf` | [outing](https://open.kattis.com/problems/outing) | [10265](https://solved.ac/problems/10265) | | **H** | Clock Pictures | `ncpc/2014/clockpictures` | `ncpc/2014/ncpc2014problems.pdf` | [clockpictures](https://open.kattis.com/problems/clockpictures) | [10266](https://solved.ac/problems/10266) | | **I** | How many squares? | `ncpc/2014/squares` | `ncpc/2014/ncpc2014problems.pdf` | [squares](https://open.kattis.com/problems/squares) | [10267](https://solved.ac/problems/10267) | | **J** | Road Work | `ncpc/2014/roadwork` | `ncpc/2014/ncpc2014problems.pdf` | [roadwork](https://open.kattis.com/problems/roadwork) | [10268](https://solved.ac/problems/10268) | | **K** | Train Passengers | `ncpc/2014/trainpassengers` | `ncpc/2014/ncpc2014problems.pdf` | [trainpassengers](https://open.kattis.com/problems/trainpassengers) | [10269](https://solved.ac/problems/10269) | --- ## Nordic Collegiate Programming Contest (2015) - **Contest Slug:** `ncpc` - **Year:** 2015 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202015) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1393) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------ | :----------------------------- | :----------------------------- | :-----------------------------------------------------------------------: | :---------------------------------------: | | **A** | Adjoin the Networks | `ncpc/2015/adjoin` | `ncpc/2015/ncpc2015slides.pdf` | [adjoin](https://open.kattis.com/problems/adjoin) | [11267](https://solved.ac/problems/11267) | | **B** | Bell Ringing | `ncpc/2015/bells` | `ncpc/2015/ncpc2015slides.pdf` | [bells](https://open.kattis.com/problems/bells) | [11268](https://solved.ac/problems/11268) | | **C** | Cryptographer's Conundrum | `ncpc/2015/conundrum` | `ncpc/2015/ncpc2015slides.pdf` | [conundrum](https://open.kattis.com/problems/conundrum) | [11269](https://solved.ac/problems/11269) | | **D** | Disastrous Downtime | `ncpc/2015/downtime` | `ncpc/2015/ncpc2015slides.pdf` | [downtime](https://open.kattis.com/problems/downtime) | [11270](https://solved.ac/problems/11270) | | **E** | Entertainment Box | `ncpc/2015/entertainmentbox` | `ncpc/2015/ncpc2015slides.pdf` | [entertainmentbox](https://open.kattis.com/problems/entertainmentbox) | [11271](https://solved.ac/problems/11271) | | **F** | Floppy Music | `ncpc/2015/floppy` | `ncpc/2015/ncpc2015slides.pdf` | [floppy](https://open.kattis.com/problems/floppy) | [11272](https://solved.ac/problems/11272) | | **G** | Goblin Garden Guards | `ncpc/2015/goblingardenguards` | `ncpc/2015/ncpc2015slides.pdf` | [goblingardenguards](https://open.kattis.com/problems/goblingardenguards) | [11273](https://solved.ac/problems/11273) | | **H** | Hero Power | `ncpc/2015/heropower` | `ncpc/2015/ncpc2015slides.pdf` | [heropower](https://open.kattis.com/problems/heropower) | [11274](https://solved.ac/problems/11274) | | **I** | iCar | `ncpc/2015/icar` | `ncpc/2015/ncpc2015slides.pdf` | [icar](https://open.kattis.com/problems/icar) | [11275](https://solved.ac/problems/11275) | | **J** | Just a Quiz | `ncpc/2015/justaquiz` | `ncpc/2015/ncpc2015slides.pdf` | [justaquiz](https://open.kattis.com/problems/justaquiz) | [11276](https://solved.ac/problems/11276) | --- ## Nordic Collegiate Programming Contest (2016) - **Contest Slug:** `ncpc` - **Year:** 2016 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202016) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1530) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------- | :----------------------- | :----------------------------- | :-----------------------------------------------------------: | :---------------------------------------: | | **A** | Artwork | `ncpc/2016/artwork` | `ncpc/2016/ncpc2016slides.pdf` | [artwork](https://open.kattis.com/problems/artwork) | [13354](https://solved.ac/problems/13354) | | **B** | Bless You Autocorrect! | `ncpc/2016/autocorrect` | `ncpc/2016/ncpc2016slides.pdf` | [autocorrect](https://open.kattis.com/problems/autocorrect) | [13355](https://solved.ac/problems/13355) | | **C** | Card Hand Sorting | `ncpc/2016/cardhand` | `ncpc/2016/ncpc2016slides.pdf` | [cardhand](https://open.kattis.com/problems/cardhand) | [13356](https://solved.ac/problems/13356) | | **D** | Daydreaming Stockbroker | `ncpc/2016/stockbroker` | `ncpc/2016/ncpc2016slides.pdf` | [stockbroker](https://open.kattis.com/problems/stockbroker) | [13357](https://solved.ac/problems/13357) | | **E** | Exponial | `ncpc/2016/exponial` | `ncpc/2016/ncpc2016slides.pdf` | [exponial](https://open.kattis.com/problems/exponial) | [13358](https://solved.ac/problems/13358) | | **F** | Fleecing the Raffle | `ncpc/2016/raffle` | `ncpc/2016/ncpc2016slides.pdf` | [raffle](https://open.kattis.com/problems/raffle) | [13359](https://solved.ac/problems/13359) | | **G** | Game Rank | `ncpc/2016/gamerank` | `ncpc/2016/ncpc2016slides.pdf` | [gamerank](https://open.kattis.com/problems/gamerank) | [13360](https://solved.ac/problems/13360) | | **H** | Highest Tower | `ncpc/2016/tower` | `ncpc/2016/ncpc2016slides.pdf` | [tower](https://open.kattis.com/problems/tower) | [13361](https://solved.ac/problems/13361) | | **I** | Interception | `ncpc/2016/interception` | `ncpc/2016/ncpc2016slides.pdf` | [interception](https://open.kattis.com/problems/interception) | [13362](https://solved.ac/problems/13362) | | **K** | Keeping the Dogs Apart | `ncpc/2016/dogs` | `ncpc/2016/ncpc2016slides.pdf` | [dogs](https://open.kattis.com/problems/dogs) | [13364](https://solved.ac/problems/13364) | --- ## Nordic Collegiate Programming Contest (2017) - **Contest Slug:** `ncpc` - **Year:** 2017 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202017) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1784) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------------------- | :------------------------------------------------- | :------------------------------- | :---------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Airport Coffee | `ncpc/2017/ncpc2017-packages/airportcoffee` | `ncpc/2017/ncpc2017problems.pdf` | [airportcoffee](https://open.kattis.com/problems/airportcoffee) | [15016](https://solved.ac/problems/15016) | | **B** | Best Relay Team | `ncpc/2017/ncpc2017-packages/bestrelayteam` | `ncpc/2017/ncpc2017problems.pdf` | [bestrelayteam](https://open.kattis.com/problems/bestrelayteam) | [15017](https://solved.ac/problems/15017) | | **C** | Compass Card Sales | `ncpc/2017/ncpc2017-packages/compasscard` | `ncpc/2017/ncpc2017problems.pdf` | [compasscard](https://open.kattis.com/problems/compasscard) | [15018](https://solved.ac/problems/15018) | | **D** | Distinctive Character | `ncpc/2017/ncpc2017-packages/distinctivecharacter` | `ncpc/2017/ncpc2017problems.pdf` | [distinctivecharacter](https://open.kattis.com/problems/distinctivecharacter) | [15019](https://solved.ac/problems/15019) | | **E** | Emptying the Baltic | `ncpc/2017/ncpc2017-packages/emptyingbaltic` | `ncpc/2017/ncpc2017problems.pdf` | [emptyingbaltic](https://open.kattis.com/problems/emptyingbaltic) | [15020](https://solved.ac/problems/15020) | | **F** | Fractal Tree | `ncpc/2017/ncpc2017-packages/fractaltree` | `ncpc/2017/ncpc2017problems.pdf` | [fractaltree](https://open.kattis.com/problems/fractaltree) | [15021](https://solved.ac/problems/15021) | | **G** | Galactic Collegiate Programming Contest | `ncpc/2017/gcpc` | `ncpc/2017/ncpc2017problems.pdf` | [gcpc](https://open.kattis.com/problems/gcpc) | [15022](https://solved.ac/problems/15022) | | **H** | Hubtown | `ncpc/2017/hubtown` | `ncpc/2017/ncpc2017problems.pdf` | [hubtown](https://open.kattis.com/problems/hubtown) | [15023](https://solved.ac/problems/15023) | | **I** | Import Spaghetti | `ncpc/2017/importspaghetti` | `ncpc/2017/ncpc2017problems.pdf` | [importspaghetti](https://open.kattis.com/problems/importspaghetti) | [15024](https://solved.ac/problems/15024) | | **J** | Judging Moose | `ncpc/2017/ncpc2017-packages/judgingmoose` | `ncpc/2017/ncpc2017problems.pdf` | [judgingmoose](https://open.kattis.com/problems/judgingmoose) | [15025](https://solved.ac/problems/15025) | | **K** | Kayaking Trip | `ncpc/2017/ncpc2017-packages/kayaking` | `ncpc/2017/ncpc2017problems.pdf` | [kayaking](https://open.kattis.com/problems/kayaking) | [15026](https://solved.ac/problems/15026) | --- ## Nordic Collegiate Programming Contest (2018) - **Contest Slug:** `ncpc` - **Year:** 2018 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202018) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1938) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------- | :------------------------------- | :--------------------------- | :---------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Altruistic Amphibians | `ncpc/2018/altruisticamphibians` | `ncpc/2018/ncpc18slides.pdf` | [altruisticamphibians](https://open.kattis.com/problems/altruisticamphibians) | [16315](https://solved.ac/problems/16315) | | **B** | Baby Bites | `ncpc/2018/babybites` | `ncpc/2018/ncpc18slides.pdf` | [babybites](https://open.kattis.com/problems/babybites) | [16316](https://solved.ac/problems/16316) | | **C** | Code Cleanups | `ncpc/2018/codecleanups` | `ncpc/2018/ncpc18slides.pdf` | [codecleanups](https://open.kattis.com/problems/codecleanups) | [16317](https://solved.ac/problems/16317) | | **D** | Delivery Delays | `ncpc/2018/deliverydelays` | `ncpc/2018/ncpc18slides.pdf` | [deliverydelays](https://open.kattis.com/problems/deliverydelays) | [16318](https://solved.ac/problems/16318) | | **E** | Explosion Exploit | `ncpc/2018/explosion` | `ncpc/2018/ncpc18slides.pdf` | [explosion](https://open.kattis.com/problems/explosion) | [16319](https://solved.ac/problems/16319) | | **F** | Firing the Phaser | `ncpc/2018/firingphaser` | `ncpc/2018/ncpc18slides.pdf` | [firingphaser](https://open.kattis.com/problems/firingphaser) | [16320](https://solved.ac/problems/16320) | | **G** | Game Scheduling | `ncpc/2018/gamescheduling` | `ncpc/2018/ncpc18slides.pdf` | [gamescheduling](https://open.kattis.com/problems/gamescheduling) | [16321](https://solved.ac/problems/16321) | | **H** | House Lawn | `ncpc/2018/houselawn` | `ncpc/2018/ncpc18slides.pdf` | [houselawn](https://open.kattis.com/problems/houselawn) | [16322](https://solved.ac/problems/16322) | | **I** | Intergalactic Bidding | `ncpc/2018/intergalacticbidding` | `ncpc/2018/ncpc18slides.pdf` | [intergalacticbidding](https://open.kattis.com/problems/intergalacticbidding) | [16323](https://solved.ac/problems/16323) | | **J** | Jumbled String | `ncpc/2018/jumbledstring` | `ncpc/2018/ncpc18slides.pdf` | [jumbledstring](https://open.kattis.com/problems/jumbledstring) | [16324](https://solved.ac/problems/16324) | | **K** | King's Colors | `ncpc/2018/kingscolors` | `ncpc/2018/ncpc18slides.pdf` | [kingscolors](https://open.kattis.com/problems/kingscolors) | [16325](https://solved.ac/problems/16325) | --- ## Nordic Collegiate Programming Contest (2019) - **Contest Slug:** `ncpc` - **Year:** 2019 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202019) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2116) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------- | :------------------------------- | :--------------------------- | :---------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Alphabet Animals | `ncpc/2019/alphabetanimals` | `ncpc/2019/ncpc19slides.pdf` | [alphabetanimals](https://open.kattis.com/problems/alphabetanimals) | [18018](https://solved.ac/problems/18018) | | **B** | Building Boundaries | `ncpc/2019/buildingboundaries` | `ncpc/2019/ncpc19slides.pdf` | [buildingboundaries](https://open.kattis.com/problems/buildingboundaries) | [18019](https://solved.ac/problems/18019) | | **C** | Cocoa Coalition | `ncpc/2019/cocoacoalition` | `ncpc/2019/ncpc19slides.pdf` | [cocoacoalition](https://open.kattis.com/problems/cocoacoalition) | [18020](https://solved.ac/problems/18020) | | **D** | Dungeon Dawdler | `ncpc/2019/dungeondawdler` | `ncpc/2019/ncpc19slides.pdf` | [dungeondawdler](https://open.kattis.com/problems/dungeondawdler) | [18021](https://solved.ac/problems/18021) | | **E** | Eeny Meeny | `ncpc/2019/eenymeeny` | `ncpc/2019/ncpc19slides.pdf` | [eenymeeny](https://open.kattis.com/problems/eenymeeny) | [18022](https://solved.ac/problems/18022) | | **F** | Flow Finder | `ncpc/2019/flowfinder` | `ncpc/2019/ncpc19slides.pdf` | [flowfinder](https://open.kattis.com/problems/flowfinder) | [18023](https://solved.ac/problems/18023) | | **G** | Game of Gnomes | `ncpc/2019/gameofgnomes` | `ncpc/2019/ncpc19slides.pdf` | [gameofgnomes](https://open.kattis.com/problems/gameofgnomes) | [18024](https://solved.ac/problems/18024) | | **H** | Hot Hike | `ncpc/2019/hothike` | `ncpc/2019/ncpc19slides.pdf` | [hothike](https://open.kattis.com/problems/hothike) | [18025](https://solved.ac/problems/18025) | | **I** | Incremental Induction | `ncpc/2019/incrementalinduction` | `ncpc/2019/ncpc19slides.pdf` | [incrementalinduction](https://open.kattis.com/problems/incrementalinduction) | [18026](https://solved.ac/problems/18026) | | **J** | Jealous Youngsters | `ncpc/2019/jealousyoungsters` | `ncpc/2019/ncpc19slides.pdf` | [jealousyoungsters](https://open.kattis.com/problems/jealousyoungsters) | [18027](https://solved.ac/problems/18027) | | **K** | Keep it Cool | `ncpc/2019/keepitcool` | `ncpc/2019/ncpc19slides.pdf` | [keepitcool](https://open.kattis.com/problems/keepitcool) | [18028](https://solved.ac/problems/18028) | --- ## Nordic Collegiate Programming Contest (2020) - **Contest Slug:** `ncpc` - **Year:** 2020 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202020) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2447) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------- | :-------------------------------- | :------------------------------- | :--------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Array of Discord | `ncpc/2020/arrayofdiscord` | `ncpc/2020/ncpc2020problems.pdf` | [arrayofdiscord](https://open.kattis.com/problems/arrayofdiscord) | [21047](https://solved.ac/problems/21047) | | **B** | Big Brother | `ncpc/2020/bigbrother` | `ncpc/2020/ncpc2020problems.pdf` | [bigbrother](https://open.kattis.com/problems/bigbrother) | [21048](https://solved.ac/problems/21048) | | **C** | Coin Stacks | `ncpc/2020/coinstacks` | `ncpc/2020/ncpc2020problems.pdf` | [coinstacks](https://open.kattis.com/problems/coinstacks) | [21049](https://solved.ac/problems/21049) | | **D** | Dams in Distress | `ncpc/2020/damsindistress` | `ncpc/2020/ncpc2020problems.pdf` | [damsindistress](https://open.kattis.com/problems/damsindistress) | [21050](https://solved.ac/problems/21050) | | **E** | Exhaustive Experiment | `ncpc/2020/exhaustiveexperiment` | `ncpc/2020/ncpc2020problems.pdf` | [exhaustiveexperiment](https://open.kattis.com/problems/exhaustiveexperiment) | [21051](https://solved.ac/problems/21051) | | **F** | Film Critics | `ncpc/2020/filmcritics` | `ncpc/2020/ncpc2020problems.pdf` | [filmcritics](https://open.kattis.com/problems/filmcritics) | [21052](https://solved.ac/problems/21052) | | **G** | Gig Combinatorics | `ncpc/2020/gigcombinatorics` | `ncpc/2020/ncpc2020problems.pdf` | [gigcombinatorics](https://open.kattis.com/problems/gigcombinatorics) | [21053](https://solved.ac/problems/21053) | | **H** | Hiring and Firing | `ncpc/2020/hiringfiring` | `ncpc/2020/ncpc2020problems.pdf` | [hiringfiring](https://open.kattis.com/problems/hiringfiring) | [21054](https://solved.ac/problems/21054) | | **I** | Infection Estimation | `ncpc/2020/infectionestimation` | `ncpc/2020/ncpc2020problems.pdf` | [infectionestimation](https://open.kattis.com/problems/infectionestimation) | [21055](https://solved.ac/problems/21055) | | **J** | Joining Flows | `ncpc/2020/joiningflows` | `ncpc/2020/ncpc2020problems.pdf` | [joiningflows](https://open.kattis.com/problems/joiningflows) | [21056](https://solved.ac/problems/21056) | | **K** | Keep Calm And Carry Off | `ncpc/2020/keepcalmandcarryoff` | `ncpc/2020/ncpc2020problems.pdf` | [keepcalmandcarryoff](https://open.kattis.com/problems/keepcalmandcarryoff) | [21057](https://solved.ac/problems/21057) | | **L** | Language Survey | `ncpc/2020/languagesurvey` | `ncpc/2020/ncpc2020problems.pdf` | [languagesurvey](https://open.kattis.com/problems/languagesurvey) | [21058](https://solved.ac/problems/21058) | | **M** | Methodic Multiplication | `ncpc/2020/methodicmultiplication` | `ncpc/2020/ncpc2020problems.pdf` | [methodicmultiplication](https://open.kattis.com/problems/methodicmultiplication) | [21059](https://solved.ac/problems/21059) | --- ## Nordic Collegiate Programming Contest (2021) - **Contest Slug:** `ncpc` - **Year:** 2021 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202021) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2816) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------- | :------------------------------ | :------------------------------- | :-------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Antenna Analysis | `ncpc/2021/antennaanalysis` | `ncpc/2021/ncpc2021problems.pdf` | [antennaanalysis](https://open.kattis.com/problems/antennaanalysis) | [23265](https://solved.ac/problems/23265) | | **B** | Breaking Bars | `ncpc/2021/breakingbars` | `ncpc/2021/ncpc2021problems.pdf` | [breakingbars](https://open.kattis.com/problems/breakingbars) | [23266](https://solved.ac/problems/23266) | | **C** | Customs Controls | `ncpc/2021/customscontrols` | `ncpc/2021/ncpc2021problems.pdf` | [customscontrols](https://open.kattis.com/problems/customscontrols) | [23267](https://solved.ac/problems/23267) | | **D** | Deceptive Directions | `ncpc/2021/deceptivedirections` | `ncpc/2021/ncpc2021problems.pdf` | [deceptivedirections](https://open.kattis.com/problems/deceptivedirections) | [23268](https://solved.ac/problems/23268) | | **E** | Eavesdropper Evasion | `ncpc/2021/eavesdropperevasion` | `ncpc/2021/ncpc2021problems.pdf` | [eavesdropperevasion](https://open.kattis.com/problems/eavesdropperevasion) | [23269](https://solved.ac/problems/23269) | | **F** | Fortune From Folly | `ncpc/2021/fortunefromfolly` | `ncpc/2021/ncpc2021problems.pdf` | [fortunefromfolly](https://open.kattis.com/problems/fortunefromfolly) | [23270](https://solved.ac/problems/23270) | | **G** | Grazed Grains | `ncpc/2021/grazedgrains` | `ncpc/2021/ncpc2021problems.pdf` | [grazedgrains](https://open.kattis.com/problems/grazedgrains) | [23271](https://solved.ac/problems/23271) | | **H** | Hiring Help | `ncpc/2021/hiringhelp` | `ncpc/2021/ncpc2021problems.pdf` | [hiringhelp](https://open.kattis.com/problems/hiringhelp) | [23272](https://solved.ac/problems/23272) | | **I** | Intact Intervals | `ncpc/2021/intactintervals` | `ncpc/2021/ncpc2021problems.pdf` | [intactintervals](https://open.kattis.com/problems/intactintervals) | [23273](https://solved.ac/problems/23273) | | **J** | Joint Jog Jam | `ncpc/2021/jointjogjam` | `ncpc/2021/ncpc2021problems.pdf` | [jointjogjam](https://open.kattis.com/problems/jointjogjam) | [23274](https://solved.ac/problems/23274) | | **K** | Knot Knowledge | `ncpc/2021/knotknowledge` | `ncpc/2021/ncpc2021problems.pdf` | [knotknowledge](https://open.kattis.com/problems/knotknowledge) | [23275](https://solved.ac/problems/23275) | | **L** | Locust Locus | `ncpc/2021/locustlocus` | `ncpc/2021/ncpc2021problems.pdf` | [locustlocus](https://open.kattis.com/problems/locustlocus) | [23276](https://solved.ac/problems/23276) | | **M** | Marvelous Marathon | `ncpc/2021/marvelousmarathon` | `ncpc/2021/ncpc2021problems.pdf` | [marvelousmarathon](https://open.kattis.com/problems/marvelousmarathon) | [23277](https://solved.ac/problems/23277) | --- ## Nordic Collegiate Programming Contest (2022) - **Contest Slug:** `ncpc` - **Year:** 2022 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202022) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/3224) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------- | :------------------------------------------------- | :------------------------------- | :---------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Ace Arbiter | `ncpc/2022/ncpc2022-problems/acearbiter` | `ncpc/2022/ncpc2022problems.pdf` | [acearbiter](https://open.kattis.com/problems/acearbiter) | [26024](https://solved.ac/problems/26024) | | **B** | Berry Battle | `ncpc/2022/ncpc2022-problems/berrybattle` | `ncpc/2022/ncpc2022problems.pdf` | [berrybattle](https://open.kattis.com/problems/berrybattle) | [26025](https://solved.ac/problems/26025) | | **C** | Coffee Cup Combo | `ncpc/2022/ncpc2022-problems/coffeecupcombo` | `ncpc/2022/ncpc2022problems.pdf` | [coffeecupcombo](https://open.kattis.com/problems/coffeecupcombo) | [26026](https://solved.ac/problems/26026) | | **D** | Disc District | `ncpc/2022/discdistrict` | `ncpc/2022/ncpc2022problems.pdf` | [discdistrict](https://open.kattis.com/problems/discdistrict) | [26027](https://solved.ac/problems/26027) | | **E** | Enigmatic Enumeration | `ncpc/2022/ncpc2022-problems/enigmaticenumeration` | `ncpc/2022/ncpc2022problems.pdf` | [enigmaticenumeration](https://open.kattis.com/problems/enigmaticenumeration) | [26028](https://solved.ac/problems/26028) | | **F** | Foreign Football | `ncpc/2022/foreignfootball` | `ncpc/2022/ncpc2022problems.pdf` | [foreignfootball](https://open.kattis.com/problems/foreignfootball) | [26029](https://solved.ac/problems/26029) | | **G** | Graduation Guarantee | `ncpc/2022/ncpc2022-problems/graduationguarantee` | `ncpc/2022/ncpc2022problems.pdf` | [graduationguarantee](https://open.kattis.com/problems/graduationguarantee) | [26030](https://solved.ac/problems/26030) | | **H** | Highest Hill | `ncpc/2022/highesthill` | `ncpc/2022/ncpc2022problems.pdf` | [highesthill](https://open.kattis.com/problems/highesthill) | [26031](https://solved.ac/problems/26031) | | **I** | Icy Itinerary | `ncpc/2022/ncpc2022-problems/icyitinerary` | `ncpc/2022/ncpc2022problems.pdf` | [icyitinerary](https://open.kattis.com/problems/icyitinerary) | [26032](https://solved.ac/problems/26032) | | **J** | Junk Journey | `ncpc/2022/junkjourney` | `ncpc/2022/ncpc2022problems.pdf` | [junkjourney](https://open.kattis.com/problems/junkjourney) | [26033](https://solved.ac/problems/26033) | | **K** | Keyboard Queries | `ncpc/2022/ncpc2022-problems/keyboardqueries` | `ncpc/2022/ncpc2022problems.pdf` | [keyboardqueries](https://open.kattis.com/problems/keyboardqueries) | [26034](https://solved.ac/problems/26034) | --- ## Nordic Collegiate Programming Contest (2023) - **Contest Slug:** `ncpc` - **Year:** 2023 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202023) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4004) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------- | :-------------------------------- | :------------------------------- | :-----------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Aperiodic Appointments | `ncpc/2023/aperiodicappointments` | `ncpc/2023/ncpc2023problems.pdf` | [aperiodicappointments](https://open.kattis.com/problems/aperiodicappointments) | [30432](https://solved.ac/problems/30432) | | **B** | Berry Battle 2 | `ncpc/2023/berrybattle2` | `ncpc/2023/ncpc2023problems.pdf` | [berrybattle2](https://open.kattis.com/problems/berrybattle2) | [30433](https://solved.ac/problems/30433) | | **C** | Converting Romans | `ncpc/2023/convertingromans` | `ncpc/2023/ncpc2023problems.pdf` | [convertingromans](https://open.kattis.com/problems/convertingromans) | [30434](https://solved.ac/problems/30434) | | **D** | Die Hard | `ncpc/2023/diehard` | `ncpc/2023/ncpc2023problems.pdf` | [diehard](https://open.kattis.com/problems/diehard) | [30435](https://solved.ac/problems/30435) | | **E** | Electronic Components | `ncpc/2023/electroniccomponents` | `ncpc/2023/ncpc2023problems.pdf` | [electroniccomponents](https://open.kattis.com/problems/electroniccomponents) | [30436](https://solved.ac/problems/30436) | | **F** | Factor-Full Tree | `ncpc/2023/factorfulltree` | `ncpc/2023/ncpc2023problems.pdf` | [factorfulltree](https://open.kattis.com/problems/factorfulltree) | [30437](https://solved.ac/problems/30437) | | **G** | Groups of Strangers | `ncpc/2023/groupsofstrangers` | `ncpc/2023/ncpc2023problems.pdf` | [groupsofstrangers](https://open.kattis.com/problems/groupsofstrangers) | [30438](https://solved.ac/problems/30438) | | **H** | Heroes of Velmar | `ncpc/2023/heroesofvelmar` | `ncpc/2023/ncpc2023problems.pdf` | [heroesofvelmar](https://open.kattis.com/problems/heroesofvelmar) | [30439](https://solved.ac/problems/30439) | | **I** | Intertwined | `ncpc/2023/intertwined` | `ncpc/2023/ncpc2023problems.pdf` | [intertwined](https://open.kattis.com/problems/intertwined) | [30440](https://solved.ac/problems/30440) | | **J** | Jamboree | `ncpc/2023/jamboree` | `ncpc/2023/ncpc2023problems.pdf` | [jamboree](https://open.kattis.com/problems/jamboree) | [30441](https://solved.ac/problems/30441) | | **K** | Karl Coder | `ncpc/2023/karlcoder` | `ncpc/2023/ncpc2023problems.pdf` | [karlcoder](https://open.kattis.com/problems/karlcoder) | [30442](https://solved.ac/problems/30442) | --- ## Nordic Collegiate Programming Contest (2024) - **Contest Slug:** `ncpc` - **Year:** 2024 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202024) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4314) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------- | :---------------------------------------------- | :------------------------------- | :----------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Avoiding the Abyss | `ncpc/2024/ncpc2024-problems/avoidingtheabyss` | `ncpc/2024/ncpc2024problems.pdf` | [avoidingtheabyss](https://open.kattis.com/problems/avoidingtheabyss) | [32549](https://solved.ac/problems/32549) | | **B** | Baseball Court | `ncpc/2024/ncpc2024-problems/baseballcourt` | `ncpc/2024/ncpc2024problems.pdf` | [baseballcourt](https://open.kattis.com/problems/baseballcourt) | [32550](https://solved.ac/problems/32550) | | **C** | Composed Rhythms | `ncpc/2024/ncpc2024-problems/composedrhythms` | `ncpc/2024/ncpc2024problems.pdf` | [composedrhythms](https://open.kattis.com/problems/composedrhythms) | [32551](https://solved.ac/problems/32551) | | **D** | Double Deck | `ncpc/2024/ncpc2024-problems/doubledeck` | `ncpc/2024/ncpc2024problems.pdf` | [doubledeck](https://open.kattis.com/problems/doubledeck) | [32552](https://solved.ac/problems/32552) | | **E** | Elapid Errands | `ncpc/2024/ncpc2024-problems/elapiderrands` | `ncpc/2024/ncpc2024problems.pdf` | [elapiderrands](https://open.kattis.com/problems/elapiderrands) | [32553](https://solved.ac/problems/32553) | | **F** | Fence Fee | `ncpc/2024/ncpc2024-problems/fencefee` | `ncpc/2024/ncpc2024problems.pdf` | [fencefee](https://open.kattis.com/problems/fencefee) | [32554](https://solved.ac/problems/32554) | | **G** | Guessing Passwords | `ncpc/2024/ncpc2024-problems/guessingpasswords` | `ncpc/2024/ncpc2024problems.pdf` | [guessingpasswords](https://open.kattis.com/problems/guessingpasswords) | [32555](https://solved.ac/problems/32555) | | **H** | Hotfix | `ncpc/2024/ncpc2024-problems/hotfix` | `ncpc/2024/ncpc2024problems.pdf` | [hotfix](https://open.kattis.com/problems/hotfix) | [32556](https://solved.ac/problems/32556) | | **I** | Infinite Cash | `ncpc/2024/ncpc2024-problems/infinitecash` | `ncpc/2024/ncpc2024problems.pdf` | [infinitecash](https://open.kattis.com/problems/infinitecash) | [32557](https://solved.ac/problems/32557) | | **J** | Jungle Game | `ncpc/2024/ncpc2024-problems/junglegame` | `ncpc/2024/ncpc2024problems.pdf` | [junglegame](https://open.kattis.com/problems/junglegame) | [32558](https://solved.ac/problems/32558) | | **K** | Knitting Pattern | `ncpc/2024/ncpc2024-problems/knittingpattern` | `ncpc/2024/ncpc2024problems.pdf` | [knittingpattern](https://open.kattis.com/problems/knittingpattern) | [32559](https://solved.ac/problems/32559) | --- ## Nordic Collegiate Programming Contest (2025) - **Contest Slug:** `ncpc` - **Year:** 2025 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202025) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4653) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------- | :------------------------------------------------- | :------------------------------- | :--------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Arithmetic Adaptation | `ncpc/2025/ncpc2025-problems/arithmeticadaptation` | `ncpc/2025/ncpc2025problems.pdf` | [arithmeticadaptation](https://open.kattis.com/problems/arithmeticadaptation) | [35216](https://solved.ac/problems/35216) | | **B** | Bohemian Bookshelf | `ncpc/2025/ncpc2025-problems/bohemianbookshelf` | `ncpc/2025/ncpc2025problems.pdf` | [bohemianbookshelf](https://open.kattis.com/problems/bohemianbookshelf) | [35217](https://solved.ac/problems/35217) | | **C** | Crochet Competition | `ncpc/2025/ncpc2025-problems/crochetcompetition` | `ncpc/2025/ncpc2025problems.pdf` | [crochetcompetition](https://open.kattis.com/problems/crochetcompetition) | [35218](https://solved.ac/problems/35218) | | **D** | Dune Dash | `ncpc/2025/ncpc2025-problems/dunedash` | `ncpc/2025/ncpc2025problems.pdf` | [dunedash](https://open.kattis.com/problems/dunedash) | [35219](https://solved.ac/problems/35219) | | **E** | Egyptian Equality | `ncpc/2025/ncpc2025-problems/egyptianequality` | `ncpc/2025/ncpc2025problems.pdf` | [egyptianequality](https://open.kattis.com/problems/egyptianequality) | [35220](https://solved.ac/problems/35220) | | **F** | Follower Forensics | `ncpc/2025/ncpc2025-problems/followerforensics` | `ncpc/2025/ncpc2025problems.pdf` | [followerforensics](https://open.kattis.com/problems/followerforensics) | [35221](https://solved.ac/problems/35221) | | **G** | Gotta Trade Some of 'Em | `ncpc/2025/ncpc2025-problems/gottatradesomeofem` | `ncpc/2025/ncpc2025problems.pdf` | [gottatradesomeofem](https://open.kattis.com/problems/gottatradesomeofem) | [35222](https://solved.ac/problems/35222) | | **H** | Hidden Permutation | `ncpc/2025/ncpc2025-problems/hiddenpermutation` | `ncpc/2025/ncpc2025problems.pdf` | [hiddenpermutation](https://open.kattis.com/problems/hiddenpermutation) | [35223](https://solved.ac/problems/35223) | | **I** | Instagraph | `ncpc/2025/ncpc2025-problems/instagraph` | `ncpc/2025/ncpc2025problems.pdf` | [instagraph](https://open.kattis.com/problems/instagraph) | [35224](https://solved.ac/problems/35224) | | **J** | Jump | `ncpc/2025/ncpc2025-problems/jump` | `ncpc/2025/ncpc2025problems.pdf` | [jump](https://open.kattis.com/problems/jump) | [35225](https://solved.ac/problems/35225) | | **K** | km/h | `ncpc/2025/ncpc2025-problems/kmh` | `ncpc/2025/ncpc2025problems.pdf` | [kmh](https://open.kattis.com/problems/kmh) | [35226](https://solved.ac/problems/35226) | --- ## Northwestern Europe Regional Contest (2006) - **Contest Slug:** `nwerc` - **Year:** 2006 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Programming%20Contest%20%28NWERC%29%202006) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/55) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------- | :------------------------ | :----------------------- | :-----------------------------------------------------------: | :-------------------------------------: | | **A** | Sudoku | `nwerc/2006/sudoku` | `nwerc/2006/nwerc06.pdf` | [sudoku](https://open.kattis.com/problems/sudoku) | [3701](https://solved.ac/problems/3701) | | **B** | The SetStack Computer | `nwerc/2006/setstack` | `nwerc/2006/nwerc06.pdf` | [setstack](https://open.kattis.com/problems/setstack) | [3702](https://solved.ac/problems/3702) | | **C** | Pie | `nwerc/2006/pie` | `nwerc/2006/nwerc06.pdf` | [pie](https://open.kattis.com/problems/pie) | [3703](https://solved.ac/problems/3703) | | **D** | Ticket to Ride | `nwerc/2006/ticket` | `nwerc/2006/nwerc06.pdf` | [tickettoride](https://open.kattis.com/problems/tickettoride) | [3704](https://solved.ac/problems/3704) | | **E** | The Bookcase | `nwerc/2006/bookcase` | `nwerc/2006/nwerc06.pdf` | [bookcase](https://open.kattis.com/problems/bookcase) | [2000](https://solved.ac/problems/2000) | | **F** | Printer Queue | `nwerc/2006/printerqueue` | `nwerc/2006/nwerc06.pdf` | - | [1966](https://solved.ac/problems/1966) | | **G** | Prime Path | `nwerc/2006/primepath` | `nwerc/2006/nwerc06.pdf` | [primepath](https://open.kattis.com/problems/primepath) | [1963](https://solved.ac/problems/1963) | | **H** | Lineland's Airport | `nwerc/2006/airport` | `nwerc/2006/nwerc06.pdf` | - | [3705](https://solved.ac/problems/3705) | | **I** | Leonardo's Notebook | `nwerc/2006/notebook` | `nwerc/2006/nwerc06.pdf` | - | [3706](https://solved.ac/problems/3706) | --- ## Northwestern Europe Regional Contest (2007) - **Contest Slug:** `nwerc` - **Year:** 2007 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Northwestern%20European%20Programming%20Contest%20%28NWERC%29%202007) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/54) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------- | :------------------------ | :---------------------------------- | :---------------------------------------------------------------: | :-------------------------------------: | | **A** | Assemble | `nwerc/2007/assemble` | `nwerc/2007/nwerc07-problemset.pdf` | - | [3691](https://solved.ac/problems/3691) | | **B** | March of the Penguins | `nwerc/2007/penguins` | `nwerc/2007/nwerc07-problemset.pdf` | [marchofpenguins](https://open.kattis.com/problems/marchofpenguins) | [3692](https://solved.ac/problems/3692) | | **C** | Containers | `nwerc/2007/containers` | `nwerc/2007/nwerc07-problemset.pdf` | - | [3693](https://solved.ac/problems/3693) | | **D** | Youth Hostel Dorm | `nwerc/2007/dorm` | `nwerc/2007/nwerc07-problemset.pdf` | - | [3694](https://solved.ac/problems/3694) | | **E** | Escape from Enemy Territory | `nwerc/2007/escape` | `nwerc/2007/nwerc07-problemset.pdf` | [enemyterritory](https://open.kattis.com/problems/enemyterritory) | [3695](https://solved.ac/problems/3695) | | **F** | Flight Safety | `nwerc/2007/flight` | `nwerc/2007/nwerc07-problemset.pdf` | [flightsafety](https://open.kattis.com/problems/flightsafety) | [3696](https://solved.ac/problems/3696) | | **G** | Summits | `nwerc/2007/summits` | `nwerc/2007/nwerc07-problemset.pdf` | - | [3697](https://solved.ac/problems/3697) | | **H** | Obfuscation | `nwerc/2007/obfuscation` | `nwerc/2007/nwerc07-problemset.pdf` | [obfuscation](https://open.kattis.com/problems/obfuscation) | [3698](https://solved.ac/problems/3698) | | **I** | Tower Parking | `nwerc/2007/towerparking` | `nwerc/2007/nwerc07-problemset.pdf` | - | [3699](https://solved.ac/problems/3699) | | **J** | Walk | `nwerc/2007/walk` | `nwerc/2007/nwerc07-problemset.pdf` | [walk](https://open.kattis.com/problems/walk) | [3700](https://solved.ac/problems/3700) | --- ## Northwestern Europe Regional Contest (2008) - **Contest Slug:** `nwerc` - **Year:** 2008 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Contest%20%28NWERC%29%202008) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/53) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------- | :---------------- | :---------------------------------- | :-------------------------------------------------------------------: | :-------------------------------------: | | **A** | Equilibrium Mobile | `nwerc/2008/a` | `nwerc/2008/nwerc08-problemset.pdf` | [equilibrium](https://open.kattis.com/problems/equilibrium) | [3681](https://solved.ac/problems/3681) | | **B** | Proving Equivalences | `nwerc/2008/b` | `nwerc/2008/nwerc08-problemset.pdf` | [equivalences](https://open.kattis.com/problems/equivalences) | [3682](https://solved.ac/problems/3682) | | **C** | Cat vs. Dog | `nwerc/2008/c` | `nwerc/2008/nwerc08-problemset.pdf` | [catvsdog](https://open.kattis.com/problems/catvsdog) | [3683](https://solved.ac/problems/3683) | | **D** | Disgruntled Judge | `nwerc/2008/d` | `nwerc/2008/nwerc08-problemset.pdf` | [disgruntledjudge](https://open.kattis.com/problems/disgruntledjudge) | [3684](https://solved.ac/problems/3684) | | **E** | Easy Climb | `nwerc/2008/e` | `nwerc/2008/nwerc08-problemset.pdf` | [easyclimb](https://open.kattis.com/problems/easyclimb) | [3685](https://solved.ac/problems/3685) | | **F** | Sculpture | `nwerc/2008/f` | `nwerc/2008/nwerc08-problemset.pdf` | [sculpture](https://open.kattis.com/problems/sculpture) | [3686](https://solved.ac/problems/3686) | | **H** | Matchsticks | `nwerc/2008/h` | `nwerc/2008/nwerc08-problemset.pdf` | [matchsticks](https://open.kattis.com/problems/matchsticks) | [3687](https://solved.ac/problems/3687) | | **I** | White Water Rafting | `nwerc/2008/i` | `nwerc/2008/nwerc08-problemset.pdf` | [rafting](https://open.kattis.com/problems/rafting) | [3688](https://solved.ac/problems/3688) | | **J** | Shuffle | `nwerc/2008/j` | `nwerc/2008/nwerc08-problemset.pdf` | [shuffle](https://open.kattis.com/problems/shuffle) | [3689](https://solved.ac/problems/3689) | | **K** | Videopoker | `nwerc/2008/k` | `nwerc/2008/nwerc08-problemset.pdf` | [videopoker](https://open.kattis.com/problems/videopoker) | [3690](https://solved.ac/problems/3690) | --- ## Northwestern Europe Regional Contest (2009) - **Contest Slug:** `nwerc` - **Year:** 2009 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Contest%20%28NWERC%29%202009) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/52) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------- | :------------------------------------------ | :----------------------- | :-----------------------------------------------------------------: | :-------------------------------------: | | **A** | An Industrial Spy | `nwerc/2009/AnIndustrialSpy` | `nwerc/2009/nwerc09.pdf` | [industrialspy](https://open.kattis.com/problems/industrialspy) | [3671](https://solved.ac/problems/3671) | | **B** | Common Subexpression Elimination | `nwerc/2009/CommonSubexpressionElimination` | `nwerc/2009/nwerc09.pdf` | [subexpression](https://open.kattis.com/problems/subexpression) | [3672](https://solved.ac/problems/3672) | | **C** | Divisible Subsequences | `nwerc/2009/DivisibleSubsequences` | `nwerc/2009/nwerc09.pdf` | [divisible](https://open.kattis.com/problems/divisible) | [3673](https://solved.ac/problems/3673) | | **D** | Fractal | `nwerc/2009/Fractal` | `nwerc/2009/nwerc09.pdf` | [fractal2](https://open.kattis.com/problems/fractal2) | [3674](https://solved.ac/problems/3674) | | **E** | Mountain Road | `nwerc/2009/MountainRoad` | `nwerc/2009/nwerc09.pdf` | [mountainroad](https://open.kattis.com/problems/mountainroad) | [3675](https://solved.ac/problems/3675) | | **F** | Moving to Nuremberg | `nwerc/2009/Moving` | `nwerc/2009/nwerc09.pdf` | [nuremberg](https://open.kattis.com/problems/nuremberg) | [3676](https://solved.ac/problems/3676) | | **G** | Room Assignments | `nwerc/2009/RoomAssignments` | `nwerc/2009/nwerc09.pdf` | [roomassignments](https://open.kattis.com/problems/roomassignments) | [3677](https://solved.ac/problems/3677) | | **H** | Settlers of Catan | `nwerc/2009/Settlers` | `nwerc/2009/nwerc09.pdf` | [settlers2](https://open.kattis.com/problems/settlers2) | [3678](https://solved.ac/problems/3678) | | **I** | Simple Polygon | `nwerc/2009/SimplePolygon` | `nwerc/2009/nwerc09.pdf` | [simplepolygon](https://open.kattis.com/problems/simplepolygon) | [3679](https://solved.ac/problems/3679) | | **J** | Wormholes | `nwerc/2009/Wormholes` | `nwerc/2009/nwerc09.pdf` | [wormholes2](https://open.kattis.com/problems/wormholes2) | [3680](https://solved.ac/problems/3680) | --- ## Northwestern Europe Regional Contest (2010) - **Contest Slug:** `nwerc` - **Year:** 2010 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202010) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/51) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------- | :---------------- | :------------------------------------ | :-----------------------------------------------------------: | :-------------------------------------: | | **A** | Fair Division | `nwerc/2010/A` | `nwerc/2010/nwerc2010-problemset.pdf` | [fairdivision](https://open.kattis.com/problems/fairdivision) | [3661](https://solved.ac/problems/3661) | | **B** | Free Goodies | `nwerc/2010/B` | `nwerc/2010/nwerc2010-problemset.pdf` | [freegoodies](https://open.kattis.com/problems/freegoodies) | [3662](https://solved.ac/problems/3662) | | **C** | High Score | `nwerc/2010/C` | `nwerc/2010/nwerc2010-problemset.pdf` | [highscore](https://open.kattis.com/problems/highscore) | [3663](https://solved.ac/problems/3663) | | **D** | Hill Driving | `nwerc/2010/D` | `nwerc/2010/nwerc2010-problemset.pdf` | [hilldriving](https://open.kattis.com/problems/hilldriving) | [3664](https://solved.ac/problems/3664) | | **E** | Rankings | `nwerc/2010/E` | `nwerc/2010/nwerc2010-problemset.pdf` | - | [3665](https://solved.ac/problems/3665) | | **F** | Risk | `nwerc/2010/F` | `nwerc/2010/nwerc2010-problemset.pdf` | [risk](https://open.kattis.com/problems/risk) | [3666](https://solved.ac/problems/3666) | | **G** | Selling Land | `nwerc/2010/G` | `nwerc/2010/nwerc2010-problemset.pdf` | [sellingland](https://open.kattis.com/problems/sellingland) | [3667](https://solved.ac/problems/3667) | | **H** | Stock Prices | `nwerc/2010/H` | `nwerc/2010/nwerc2010-problemset.pdf` | [stockprices](https://open.kattis.com/problems/stockprices) | [3668](https://solved.ac/problems/3668) | | **I** | Telephone Network | `nwerc/2010/I` | `nwerc/2010/nwerc2010-problemset.pdf` | - | [3669](https://solved.ac/problems/3669) | | **J** | Wormly | `nwerc/2010/J` | `nwerc/2010/nwerc2010-problemset.pdf` | - | [3670](https://solved.ac/problems/3670) | --- ## Northwestern Europe Regional Contest (2011) - **Contest Slug:** `nwerc` - **Year:** 2011 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202011) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/50) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------- | :---------------- | :-------------------------------------- | :-----------------------------------------------------------------: | :-------------------------------------: | | **A** | Binomial coefficients | `nwerc/2011/A` | `nwerc/2011/nwerc2011-problemset_2.pdf` | - | [3651](https://solved.ac/problems/3651) | | **B** | Bird tree | `nwerc/2011/B` | `nwerc/2011/nwerc2011-problemset_2.pdf` | - | [3652](https://solved.ac/problems/3652) | | **C** | Movie collection | `nwerc/2011/C` | `nwerc/2011/nwerc2011-problemset_2.pdf` | [moviecollection](https://open.kattis.com/problems/moviecollection) | [3653](https://solved.ac/problems/3653) | | **D** | Piece it together | `nwerc/2011/D` | `nwerc/2011/nwerc2011-problemset_2.pdf` | [pieceittogether](https://open.kattis.com/problems/pieceittogether) | [3654](https://solved.ac/problems/3654) | | **E** | Please, go first | `nwerc/2011/E` | `nwerc/2011/nwerc2011-problemset_2.pdf` | [pleasegofirst](https://open.kattis.com/problems/pleasegofirst) | [3655](https://solved.ac/problems/3655) | | **F** | Pool construction | `nwerc/2011/F` | `nwerc/2011/nwerc2011-problemset_2.pdf` | - | [3656](https://solved.ac/problems/3656) | | **G** | Smoking gun | `nwerc/2011/G` | `nwerc/2011/nwerc2011-problemset_2.pdf` | - | [3657](https://solved.ac/problems/3657) | | **H** | Tichu | `nwerc/2011/H` | `nwerc/2011/nwerc2011-problemset_2.pdf` | - | [3658](https://solved.ac/problems/3658) | | **I** | Tracking RFIDs | `nwerc/2011/I` | `nwerc/2011/nwerc2011-problemset_2.pdf` | - | [3659](https://solved.ac/problems/3659) | | **J** | Train delays | `nwerc/2011/J` | `nwerc/2011/nwerc2011-problemset_2.pdf` | [traindelays](https://open.kattis.com/problems/traindelays) | [3660](https://solved.ac/problems/3660) | --- ## Northwestern Europe Regional Contest (2012) - **Contest Slug:** `nwerc` - **Year:** 2012 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/49) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------- | :---------------- | :------------------------------------------- | :----: | :-------------------------------------: | | **A** | Admiral | `nwerc/2012/A` | `nwerc/2012/NWERC_2012_ProblemSet_FINAL.pdf` | - | [3640](https://solved.ac/problems/3640) | | **B** | Beer Pressure | `nwerc/2012/B` | `nwerc/2012/NWERC_2012_ProblemSet_FINAL.pdf` | - | [3641](https://solved.ac/problems/3641) | | **C** | Cycling | `nwerc/2012/C` | `nwerc/2012/NWERC_2012_ProblemSet_FINAL.pdf` | - | [3642](https://solved.ac/problems/3642) | | **D** | Digital Clock | `nwerc/2012/D` | `nwerc/2012/NWERC_2012_ProblemSet_FINAL.pdf` | - | [3643](https://solved.ac/problems/3643) | | **E** | Edge Case | `nwerc/2012/E` | `nwerc/2012/NWERC_2012_ProblemSet_FINAL.pdf` | - | [3644](https://solved.ac/problems/3644) | | **F** | Foul Play | `nwerc/2012/F` | `nwerc/2012/NWERC_2012_ProblemSet_FINAL.pdf` | - | [3645](https://solved.ac/problems/3645) | | **G** | Guards | `nwerc/2012/G` | `nwerc/2012/NWERC_2012_ProblemSet_FINAL.pdf` | - | [3646](https://solved.ac/problems/3646) | | **H** | Hip To Be Square | `nwerc/2012/H` | `nwerc/2012/NWERC_2012_ProblemSet_FINAL.pdf` | - | [3647](https://solved.ac/problems/3647) | | **I** | Idol | `nwerc/2012/I` | `nwerc/2012/NWERC_2012_ProblemSet_FINAL.pdf` | - | [3648](https://solved.ac/problems/3648) | | **J** | Joint Venture | `nwerc/2012/J` | `nwerc/2012/NWERC_2012_ProblemSet_FINAL.pdf` | - | [3649](https://solved.ac/problems/3649) | | **K** | Key Insight | `nwerc/2012/K` | `nwerc/2012/NWERC_2012_ProblemSet_FINAL.pdf` | - | [3650](https://solved.ac/problems/3650) | --- ## Northwestern Europe Regional Contest (2013) - **Contest Slug:** `nwerc` - **Year:** 2013 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1188) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------- | :--------------------------------- | :--------------------------------------------- | :----: | :-------------------------------------: | | **A** | Absurdistan Roads | `nwerc/2013/Absurdistan_Roads` | `nwerc/2013/nwerc_2013_problemset_contest.pdf` | - | [9643](https://solved.ac/problems/9643) | | **B** | Battle for Silver | `nwerc/2013/Battle_for_Silver` | `nwerc/2013/nwerc_2013_problemset_contest.pdf` | - | [9644](https://solved.ac/problems/9644) | | **C** | Card Trick | `nwerc/2013/Card_Trick` | `nwerc/2013/nwerc_2013_problemset_contest.pdf` | - | [9645](https://solved.ac/problems/9645) | | **D** | Diagrams & Tableaux | `nwerc/2013/Diagrams_and_Tableaux` | `nwerc/2013/nwerc_2013_problemset_contest.pdf` | - | [9646](https://solved.ac/problems/9646) | | **E** | Exponential Towers | `nwerc/2013/Exponential_Towers` | `nwerc/2013/nwerc_2013_problemset_contest.pdf` | - | [9647](https://solved.ac/problems/9647) | | **F** | First Date | `nwerc/2013/First_Date` | `nwerc/2013/nwerc_2013_problemset_contest.pdf` | - | [9648](https://solved.ac/problems/9648) | | **G** | Grachten | `nwerc/2013/Grachten` | `nwerc/2013/nwerc_2013_problemset_contest.pdf` | - | [9649](https://solved.ac/problems/9649) | | **H** | Highway of the Future | `nwerc/2013/Highway_of_the_Future` | `nwerc/2013/nwerc_2013_problemset_contest.pdf` | - | [9650](https://solved.ac/problems/9650) | | **I** | Infix to Prefix | `nwerc/2013/Infix_to_Prefix` | `nwerc/2013/nwerc_2013_problemset_contest.pdf` | - | [9651](https://solved.ac/problems/9651) | | **J** | Jingle Balls | `nwerc/2013/Jingle_Balls` | `nwerc/2013/nwerc_2013_problemset_contest.pdf` | - | [9652](https://solved.ac/problems/9652) | --- ## Northwestern Europe Regional Contest (2014) - **Contest Slug:** `nwerc` - **Year:** 2014 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202014%20Practice%20Session) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1312) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------ | :------------------------------ | :--------------------------------- | :-----------------------------------------------------------------------: | :---------------------------------------: | | **A** | Around the Track | `nwerc/2014/aroundthetrack` | `nwerc/2014/nwerc2014problems.pdf` | [aroundthetrack](https://open.kattis.com/problems/aroundthetrack) | [10518](https://solved.ac/problems/10518) | | **B** | Biking Duck | `nwerc/2014/bikingduck` | `nwerc/2014/nwerc2014problems.pdf` | [bikingduck](https://open.kattis.com/problems/bikingduck) | [10519](https://solved.ac/problems/10519) | | **C** | Cent Savings | `nwerc/2014/centsavings` | `nwerc/2014/nwerc2014problems.pdf` | [centsavings](https://open.kattis.com/problems/centsavings) | [10520](https://solved.ac/problems/10520) | | **D** | Digi Comp II | `nwerc/2014/digicomp2` | `nwerc/2014/nwerc2014problems.pdf` | [digicomp2](https://open.kattis.com/problems/digicomp2) | [10521](https://solved.ac/problems/10521) | | **E** | Euclidean TSP | `nwerc/2014/euclideantsp` | `nwerc/2014/nwerc2014problems.pdf` | [euclideantsp](https://open.kattis.com/problems/euclideantsp) | [10522](https://solved.ac/problems/10522) | | **F** | Finding Lines | `nwerc/2014/findinglines` | `nwerc/2014/nwerc2014problems.pdf` | [findinglines](https://open.kattis.com/problems/findinglines) | [10523](https://solved.ac/problems/10523) | | **G** | Gathering | `nwerc/2014/gathering` | `nwerc/2014/nwerc2014problems.pdf` | [gathering](https://open.kattis.com/problems/gathering) | [10524](https://solved.ac/problems/10524) | | **H** | Hyacinth | `nwerc/2014/hyacinth` | `nwerc/2014/nwerc2014problems.pdf` | [hyacinth](https://open.kattis.com/problems/hyacinth) | [10525](https://solved.ac/problems/10525) | | **I** | Indoorienteering | `nwerc/2014/indoorienteering` | `nwerc/2014/nwerc2014problems.pdf` | [indoorienteering](https://open.kattis.com/problems/indoorienteering) | [10526](https://solved.ac/problems/10526) | | **J** | Judging Troubles | `nwerc/2014/judging` | `nwerc/2014/nwerc2014problems.pdf` | [judging](https://open.kattis.com/problems/judging) | [10527](https://solved.ac/problems/10527) | | **K** | Knapsack Collection | `nwerc/2014/knapsackcollection` | `nwerc/2014/nwerc2014problems.pdf` | [knapsackcollection](https://open.kattis.com/problems/knapsackcollection) | [10528](https://solved.ac/problems/10528) | --- ## Northwestern Europe Regional Contest (2015) - **Contest Slug:** `nwerc` - **Year:** 2015 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202015%20Practice) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1431) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------- | :-------------------------- | :--------------------------------- | :---------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Assigning Workstations | `nwerc/2015/workstations` | `nwerc/2015/nwerc2015problems.pdf` | [workstations](https://open.kattis.com/problems/workstations) | [11666](https://solved.ac/problems/11666) | | **B** | Better Productivity | `nwerc/2015/productivity` | `nwerc/2015/nwerc2015problems.pdf` | [productivity](https://open.kattis.com/problems/productivity) | [11667](https://solved.ac/problems/11667) | | **C** | Cleaning Pipes | `nwerc/2015/pipes` | `nwerc/2015/nwerc2015problems.pdf` | [cleaningpipes](https://open.kattis.com/problems/cleaningpipes) | [11668](https://solved.ac/problems/11668) | | **D** | Debugging | `nwerc/2015/debugging` | `nwerc/2015/nwerc2015problems.pdf` | [debugging](https://open.kattis.com/problems/debugging) | [11669](https://solved.ac/problems/11669) | | **E** | Elementary Math | `nwerc/2015/elementarymath` | `nwerc/2015/nwerc2015problems.pdf` | [elementarymath](https://open.kattis.com/problems/elementarymath) | [11670](https://solved.ac/problems/11670) | | **F** | Flight Plan Evaluation | `nwerc/2015/flight` | `nwerc/2015/nwerc2015problems.pdf` | [flightplan](https://open.kattis.com/problems/flightplan) | [11671](https://solved.ac/problems/11671) | | **G** | Guessing Camels | `nwerc/2015/camels` | `nwerc/2015/nwerc2015problems.pdf` | [camels](https://open.kattis.com/problems/camels) | [11672](https://solved.ac/problems/11672) | | **H** | Hole in One | `nwerc/2015/holeinone` | `nwerc/2015/nwerc2015problems.pdf` | [holeinone](https://open.kattis.com/problems/holeinone) | [11673](https://solved.ac/problems/11673) | | **I** | Identifying Map Tiles | `nwerc/2015/maptiles` | `nwerc/2015/nwerc2015problems.pdf` | [maptiles2](https://open.kattis.com/problems/maptiles2) | [11674](https://solved.ac/problems/11674) | | **J** | Jumbled Communication | `nwerc/2015/communication` | `nwerc/2015/nwerc2015problems.pdf` | [communication](https://open.kattis.com/problems/communication) | [11675](https://solved.ac/problems/11675) | | **K** | Kitchen Combinatorics | `nwerc/2015/kitchen` | `nwerc/2015/nwerc2015problems.pdf` | [kitchencombinatorics](https://open.kattis.com/problems/kitchencombinatorics) | [11676](https://solved.ac/problems/11676) | --- ## Northwestern Europe Regional Contest (2016) - **Contest Slug:** `nwerc` - **Year:** 2016 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202016) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1578) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------- | :--------------------------------- | :------------------------------- | :---------------------------------------------------------------: | :---------------------------------------: | | **A** | Arranging Hat | `nwerc/2016/arranging_hat` | `nwerc/2016/nwerc2016slides.pdf` | [arranginghat](https://open.kattis.com/problems/arranginghat) | [13928](https://solved.ac/problems/13928) | | **B** | British Menu | `nwerc/2016/british_menu` | `nwerc/2016/nwerc2016slides.pdf` | [britishmenu](https://open.kattis.com/problems/britishmenu) | [13929](https://solved.ac/problems/13929) | | **C** | Careful Ascent | `nwerc/2016/careful_ascent` | `nwerc/2016/nwerc2016slides.pdf` | [carefulascent](https://open.kattis.com/problems/carefulascent) | [13930](https://solved.ac/problems/13930) | | **D** | Driving in Optimistan | `nwerc/2016/driving_in_optimistan` | `nwerc/2016/nwerc2016slides.pdf` | [optimistan](https://open.kattis.com/problems/optimistan) | [13931](https://solved.ac/problems/13931) | | **E** | Exam Redistribution | `nwerc/2016/exam_redistribution` | `nwerc/2016/nwerc2016slides.pdf` | [redistribution](https://open.kattis.com/problems/redistribution) | [13932](https://solved.ac/problems/13932) | | **F** | Free Weights | `nwerc/2016/free_weights` | `nwerc/2016/nwerc2016slides.pdf` | [freeweights](https://open.kattis.com/problems/freeweights) | [13933](https://solved.ac/problems/13933) | | **G** | Gotta Nudge 'Em All | `nwerc/2016/gotta_nudge_em_all` | `nwerc/2016/nwerc2016slides.pdf` | [gottanudge](https://open.kattis.com/problems/gottanudge) | [13934](https://solved.ac/problems/13934) | | **H** | Hamiltonian Hypercube | `nwerc/2016/hamiltonian_hypercube` | `nwerc/2016/nwerc2016slides.pdf` | [hypercube](https://open.kattis.com/problems/hypercube) | [13935](https://solved.ac/problems/13935) | | **I** | Iron and Coal | `nwerc/2016/iron_and_coal` | `nwerc/2016/nwerc2016slides.pdf` | [ironcoal](https://open.kattis.com/problems/ironcoal) | [13936](https://solved.ac/problems/13936) | | **J** | Jupiter Orbiter | `nwerc/2016/jupiter_orbiter` | `nwerc/2016/nwerc2016slides.pdf` | [jupiter](https://open.kattis.com/problems/jupiter) | [13937](https://solved.ac/problems/13937) | | **K** | Kiwi Trees | `nwerc/2016/kiwi_trees` | `nwerc/2016/nwerc2016slides.pdf` | [kiwitrees](https://open.kattis.com/problems/kiwitrees) | [13938](https://solved.ac/problems/13938) | --- ## Northwestern Europe Regional Contest (2017) - **Contest Slug:** `nwerc` - **Year:** 2017 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202017) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1852) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------ | :----------------------------- | :--------------------------------- | :---------------------------------------------------------------------: | :---------------------------------------: | | **A** | Ascending Photo | `nwerc/2017/ascendingphoto` | `nwerc/2017/nwerc2017problems.pdf` | [ascendingphoto](https://open.kattis.com/problems/ascendingphoto) | [15599](https://solved.ac/problems/15599) | | **B** | Boss Battle | `nwerc/2017/boss` | `nwerc/2017/nwerc2017problems.pdf` | [bossbattle](https://open.kattis.com/problems/bossbattle) | [15600](https://solved.ac/problems/15600) | | **C** | Connect the Dots | `nwerc/2017/connect` | `nwerc/2017/nwerc2017problems.pdf` | [connectdots](https://open.kattis.com/problems/connectdots) | [15601](https://solved.ac/problems/15601) | | **D** | Dunglish | `nwerc/2017/dunglish` | `nwerc/2017/nwerc2017problems.pdf` | [dunglish](https://open.kattis.com/problems/dunglish) | [15602](https://solved.ac/problems/15602) | | **E** | English Restaurant | `nwerc/2017/englishrestaurant` | `nwerc/2017/nwerc2017problems.pdf` | [englishrestaurant](https://open.kattis.com/problems/englishrestaurant) | [15603](https://solved.ac/problems/15603) | | **F** | Factor-Free Tree | `nwerc/2017/factorfree` | `nwerc/2017/nwerc2017problems.pdf` | [factorfree](https://open.kattis.com/problems/factorfree) | [15604](https://solved.ac/problems/15604) | | **G** | Glyph Recognition | `nwerc/2017/glyphrecognition` | `nwerc/2017/nwerc2017problems.pdf` | [glyphrecognition](https://open.kattis.com/problems/glyphrecognition) | [15605](https://solved.ac/problems/15605) | | **H** | High Score | `nwerc/2017/highscore` | `nwerc/2017/nwerc2017problems.pdf` | [highscore2](https://open.kattis.com/problems/highscore2) | [15606](https://solved.ac/problems/15606) | | **I** | Installing Apps | `nwerc/2017/installingapps` | `nwerc/2017/nwerc2017problems.pdf` | [installingapps](https://open.kattis.com/problems/installingapps) | [15607](https://solved.ac/problems/15607) | | **J** | Juggling Troupe | `nwerc/2017/jugglingtroupe` | `nwerc/2017/nwerc2017problems.pdf` | [jugglingtroupe](https://open.kattis.com/problems/jugglingtroupe) | [15608](https://solved.ac/problems/15608) | | **K** | Knockout Tournament | `nwerc/2017/knockout` | `nwerc/2017/nwerc2017problems.pdf` | [knockout](https://open.kattis.com/problems/knockout) | [15609](https://solved.ac/problems/15609) | --- ## Northwestern Europe Regional Contest (2018) - **Contest Slug:** `nwerc` - **Year:** 2018 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202018) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1967) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------- | :------------------------------ | :--------------------------------------- | :-----------------------------------------------------------------------: | :---------------------------------------: | | **A** | Access Points | `nwerc/2018/accesspoints` | `nwerc/2018/nwerc2018slides-handout.pdf` | [accesspoints](https://open.kattis.com/problems/accesspoints) | [16601](https://solved.ac/problems/16601) | | **B** | Brexit Negotiations | `nwerc/2018/brexitnegotiations` | `nwerc/2018/nwerc2018slides-handout.pdf` | [brexitnegotiations](https://open.kattis.com/problems/brexitnegotiations) | [16602](https://solved.ac/problems/16602) | | **C** | Circuit Board Design | `nwerc/2018/circuitdesign` | `nwerc/2018/nwerc2018slides-handout.pdf` | [circuitdesign](https://open.kattis.com/problems/circuitdesign) | [16603](https://solved.ac/problems/16603) | | **D** | Date Pickup | `nwerc/2018/datepickup` | `nwerc/2018/nwerc2018slides-handout.pdf` | [datepickup](https://open.kattis.com/problems/datepickup) | [16604](https://solved.ac/problems/16604) | | **E** | Equality Control | `nwerc/2018/equality` | `nwerc/2018/nwerc2018slides-handout.pdf` | [equality](https://open.kattis.com/problems/equality) | [16605](https://solved.ac/problems/16605) | | **F** | Fastest Speedrun | `nwerc/2018/fastestspeedrun` | `nwerc/2018/nwerc2018slides-handout.pdf` | [fastestspeedrun](https://open.kattis.com/problems/fastestspeedrun) | [16606](https://solved.ac/problems/16606) | | **G** | Game Design | `nwerc/2018/gamedesign` | `nwerc/2018/nwerc2018slides-handout.pdf` | [gamedesign](https://open.kattis.com/problems/gamedesign) | [16607](https://solved.ac/problems/16607) | | **H** | Hard Drive | `nwerc/2018/harddrive` | `nwerc/2018/nwerc2018slides-handout.pdf` | [harddrive](https://open.kattis.com/problems/harddrive) | [16608](https://solved.ac/problems/16608) | | **I** | Inflation | `nwerc/2018/inflation` | `nwerc/2018/nwerc2018slides-handout.pdf` | [inflation](https://open.kattis.com/problems/inflation) | [16609](https://solved.ac/problems/16609) | | **J** | Jinxed Betting | `nwerc/2018/jinxedbetting` | `nwerc/2018/nwerc2018slides-handout.pdf` | [jinxedbetting](https://open.kattis.com/problems/jinxedbetting) | [16610](https://solved.ac/problems/16610) | | **K** | Kleptography | `nwerc/2018/kleptography` | `nwerc/2018/nwerc2018slides-handout.pdf` | [kleptography](https://open.kattis.com/problems/kleptography) | [16611](https://solved.ac/problems/16611) | --- ## Northwestern Europe Regional Contest (2019) - **Contest Slug:** `nwerc` - **Year:** 2019 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202019) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2121) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------ | :------------------------------ | :------------------------------- | :-----------------------------------------------------------------------: | :---------------------------------------: | | **A** | Average Rank | `nwerc/2019/averagerank` | `nwerc/2019/nwerc2019slides.pdf` | [averagerank](https://open.kattis.com/problems/averagerank) | [18080](https://solved.ac/problems/18080) | | **B** | Balanced Cut | `nwerc/2019/balancedcut` | `nwerc/2019/nwerc2019slides.pdf` | [balancedcut](https://open.kattis.com/problems/balancedcut) | [18081](https://solved.ac/problems/18081) | | **C** | Canvas Line | `nwerc/2019/canvasline` | `nwerc/2019/nwerc2019slides.pdf` | [canvasline](https://open.kattis.com/problems/canvasline) | [18082](https://solved.ac/problems/18082) | | **D** | Disposable Switches | `nwerc/2019/disposableswitches` | `nwerc/2019/nwerc2019slides.pdf` | [disposableswitches](https://open.kattis.com/problems/disposableswitches) | [18083](https://solved.ac/problems/18083) | | **E** | Expeditious Cubing | `nwerc/2019/expeditiouscubing` | `nwerc/2019/nwerc2019slides.pdf` | [expeditiouscubing](https://open.kattis.com/problems/expeditiouscubing) | [18084](https://solved.ac/problems/18084) | | **F** | Firetrucks Are Red | `nwerc/2019/firetrucksarered` | `nwerc/2019/nwerc2019slides.pdf` | [firetrucksarered](https://open.kattis.com/problems/firetrucksarered) | [18085](https://solved.ac/problems/18085) | | **G** | Gnoll Hypothesis | `nwerc/2019/gnollhypothesis` | `nwerc/2019/nwerc2019slides.pdf` | [gnollhypothesis](https://open.kattis.com/problems/gnollhypothesis) | [18086](https://solved.ac/problems/18086) | | **H** | Height Profile | `nwerc/2019/heightprofile` | `nwerc/2019/nwerc2019slides.pdf` | [heightprofile](https://open.kattis.com/problems/heightprofile) | [18087](https://solved.ac/problems/18087) | | **I** | Inverted Deck | `nwerc/2019/inverteddeck` | `nwerc/2019/nwerc2019slides.pdf` | [inverteddeck](https://open.kattis.com/problems/inverteddeck) | [18088](https://solved.ac/problems/18088) | | **J** | Jackdaws And Crows | `nwerc/2019/jackdawsandcrows` | `nwerc/2019/nwerc2019slides.pdf` | [jackdawsandcrows](https://open.kattis.com/problems/jackdawsandcrows) | [18089](https://solved.ac/problems/18089) | | **K** | Kitesurfing | `nwerc/2019/kitesurfing` | `nwerc/2019/nwerc2019slides.pdf` | [kitesurfing](https://open.kattis.com/problems/kitesurfing) | [18090](https://solved.ac/problems/18090) | --- ## Northwestern Europe Regional Contest (2020) - **Contest Slug:** `nwerc` - **Year:** 2020 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202020) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2488) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------- | :----------------------------- | :--------------------------------- | :---------------------------------------------------------------------: | :---------------------------------------: | | **A** | Atomic Energy | `nwerc/2020/atomicenergy` | `nwerc/2020/nwerc2020problems.pdf` | [atomicenergy](https://open.kattis.com/problems/atomicenergy) | [21337](https://solved.ac/problems/21337) | | **B** | Bulldozer | `nwerc/2020/bulldozer` | `nwerc/2020/nwerc2020problems.pdf` | [bulldozer](https://open.kattis.com/problems/bulldozer) | [21338](https://solved.ac/problems/21338) | | **C** | Contest Struggles | `nwerc/2020/conteststruggles` | `nwerc/2020/nwerc2020problems.pdf` | [conteststruggles](https://open.kattis.com/problems/conteststruggles) | [21339](https://solved.ac/problems/21339) | | **D** | Dragon Balls | `nwerc/2020/dragonballs` | `nwerc/2020/nwerc2020problems.pdf` | [dragonballs](https://open.kattis.com/problems/dragonballs) | [21340](https://solved.ac/problems/21340) | | **E** | Endgame | `nwerc/2020/endgame` | `nwerc/2020/nwerc2020problems.pdf` | [endgame](https://open.kattis.com/problems/endgame) | [21341](https://solved.ac/problems/21341) | | **F** | Flight Collision | `nwerc/2020/flightcollision` | `nwerc/2020/nwerc2020problems.pdf` | [flightcollision](https://open.kattis.com/problems/flightcollision) | [21342](https://solved.ac/problems/21342) | | **G** | Great Expectations | `nwerc/2020/greatexpectations` | `nwerc/2020/nwerc2020problems.pdf` | [greatexpectations](https://open.kattis.com/problems/greatexpectations) | [21343](https://solved.ac/problems/21343) | | **H** | Hot Springs | `nwerc/2020/hotsprings` | `nwerc/2020/nwerc2020problems.pdf` | [hotsprings](https://open.kattis.com/problems/hotsprings) | [21344](https://solved.ac/problems/21344) | | **I** | Island Tour | `nwerc/2020/islandtour` | `nwerc/2020/nwerc2020problems.pdf` | [islandtour](https://open.kattis.com/problems/islandtour) | [21345](https://solved.ac/problems/21345) | | **J** | Joint Excavation | `nwerc/2020/jointexcavation` | `nwerc/2020/nwerc2020problems.pdf` | [jointexcavation](https://open.kattis.com/problems/jointexcavation) | [21346](https://solved.ac/problems/21346) | | **K** | Keyboardd | `nwerc/2020/keyboardd` | `nwerc/2020/nwerc2020problems.pdf` | [keyboardd](https://open.kattis.com/problems/keyboardd) | [21347](https://solved.ac/problems/21347) | --- ## Northwestern Europe Regional Contest (2021) - **Contest Slug:** `nwerc` - **Year:** 2021 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202021) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2887) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------- | :------------------------------- | :------------------------------- | :-------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Access Denied | `nwerc/2021/accessdenied` | `nwerc/2021/nwerc2021slides.pdf` | [accessdenied](https://open.kattis.com/problems/accessdenied) | [23767](https://solved.ac/problems/23767) | | **B** | Boredom Buster | `nwerc/2021/boredombuster` | `nwerc/2021/nwerc2021slides.pdf` | [boredombuster](https://open.kattis.com/problems/boredombuster) | [23768](https://solved.ac/problems/23768) | | **C** | Cutting Edge | `nwerc/2021/cuttingedge` | `nwerc/2021/nwerc2021slides.pdf` | [cuttingedge](https://open.kattis.com/problems/cuttingedge) | [23769](https://solved.ac/problems/23769) | | **D** | Dyson Circle | `nwerc/2021/dysoncircle` | `nwerc/2021/nwerc2021slides.pdf` | [dysoncircle](https://open.kattis.com/problems/dysoncircle) | [23770](https://solved.ac/problems/23770) | | **E** | Exchange Students | `nwerc/2021/exchangestudents` | `nwerc/2021/nwerc2021slides.pdf` | [exchangestudents](https://open.kattis.com/problems/exchangestudents) | [23771](https://solved.ac/problems/23771) | | **F** | Flatland Olympics | `nwerc/2021/flatlandolympics` | `nwerc/2021/nwerc2021slides.pdf` | [flatlandolympics](https://open.kattis.com/problems/flatlandolympics) | [23772](https://solved.ac/problems/23772) | | **G** | Glossary Arrangement | `nwerc/2021/glossaryarrangement` | `nwerc/2021/nwerc2021slides.pdf` | [glossaryarrangement](https://open.kattis.com/problems/glossaryarrangement) | [23773](https://solved.ac/problems/23773) | | **H** | Heating Up | `nwerc/2021/heatingup` | `nwerc/2021/nwerc2021slides.pdf` | [heatingup](https://open.kattis.com/problems/heatingup) | [23774](https://solved.ac/problems/23774) | | **I** | IXth Problem | `nwerc/2021/ixthproblem` | `nwerc/2021/nwerc2021slides.pdf` | [ixthproblem](https://open.kattis.com/problems/ixthproblem) | [23775](https://solved.ac/problems/23775) | | **J** | Jet Set | `nwerc/2021/jetset` | `nwerc/2021/nwerc2021slides.pdf` | [jetset](https://open.kattis.com/problems/jetset) | [23776](https://solved.ac/problems/23776) | | **K** | Knitpicking | `nwerc/2021/knitpicking` | `nwerc/2021/nwerc2021slides.pdf` | [knitpicking](https://open.kattis.com/problems/knitpicking) | [23777](https://solved.ac/problems/23777) | | **L** | Lucky Shirt | `nwerc/2021/luckyshirt` | `nwerc/2021/nwerc2021slides.pdf` | [luckyshirt](https://open.kattis.com/problems/luckyshirt) | [23778](https://solved.ac/problems/23778) | --- ## Northwestern Europe Regional Contest (2022) - **Contest Slug:** `nwerc` - **Year:** 2022 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202022) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/3237) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------- | :--------------------------------- | :--------------------------- | :-----------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Alternating Algorithm | `nwerc/2022/alternatingalgorithm` | `nwerc/2022/problem-set.pdf` | [alternatingalgorithm](https://open.kattis.com/problems/alternatingalgorithm) | [26174](https://solved.ac/problems/26174) | | **B** | Bottle Flip | `nwerc/2022/bottleflip` | `nwerc/2022/problem-set.pdf` | [bottleflip](https://open.kattis.com/problems/bottleflip) | [26175](https://solved.ac/problems/26175) | | **C** | Circular Caramel Cookie | `nwerc/2022/circularcaramelcookie` | `nwerc/2022/problem-set.pdf` | [circularcaramelcookie](https://open.kattis.com/problems/circularcaramelcookie) | [26176](https://solved.ac/problems/26176) | | **D** | Delft Distance | `nwerc/2022/delftdistance` | `nwerc/2022/problem-set.pdf` | [delftdistance](https://open.kattis.com/problems/delftdistance) | [26177](https://solved.ac/problems/26177) | | **E** | ETA | `nwerc/2022/eta` | `nwerc/2022/problem-set.pdf` | [eta](https://open.kattis.com/problems/eta) | [26178](https://solved.ac/problems/26178) | | **F** | Faster Than Light | `nwerc/2022/fasterthanlight` | `nwerc/2022/problem-set.pdf` | [fasterthanlight](https://open.kattis.com/problems/fasterthanlight) | [26179](https://solved.ac/problems/26179) | | **G** | Going in Circles | `nwerc/2022/goingincircles` | `nwerc/2022/problem-set.pdf` | [goingincircles](https://open.kattis.com/problems/goingincircles) | [26180](https://solved.ac/problems/26180) | | **H** | High-quality Tree | `nwerc/2022/highqualitytree` | `nwerc/2022/problem-set.pdf` | [highqualitytree](https://open.kattis.com/problems/highqualitytree) | [26181](https://solved.ac/problems/26181) | | **I** | Interview Question | `nwerc/2022/interviewquestion` | `nwerc/2022/problem-set.pdf` | [interviewquestion](https://open.kattis.com/problems/interviewquestion) | [26182](https://solved.ac/problems/26182) | | **J** | Justice Served | `nwerc/2022/justiceserved` | `nwerc/2022/problem-set.pdf` | [justiceserved](https://open.kattis.com/problems/justiceserved) | [26183](https://solved.ac/problems/26183) | | **K** | Kebab Pizza | `nwerc/2022/kebabpizza` | `nwerc/2022/problem-set.pdf` | [kebabpizza](https://open.kattis.com/problems/kebabpizza) | [26184](https://solved.ac/problems/26184) | | **L** | Last Guess | `nwerc/2022/lastguess` | `nwerc/2022/problem-set.pdf` | [lastguess](https://open.kattis.com/problems/lastguess) | [26185](https://solved.ac/problems/26185) | --- ## Northwestern Europe Regional Contest (2023) - **Contest Slug:** `nwerc` - **Year:** 2023 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202023) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4062) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------- | :----------------------------- | :--------------------------- | :---------------------------------------------------------------------: | :---------------------------------------: | | **A** | Arranging Adapters | `nwerc/2023/arrangingadapters` | `nwerc/2023/problem-set.pdf` | [arrangingadapters](https://open.kattis.com/problems/arrangingadapters) | [30898](https://solved.ac/problems/30898) | | **B** | Brickwork | `nwerc/2023/brickwork` | `nwerc/2023/problem-set.pdf` | [brickwork](https://open.kattis.com/problems/brickwork) | [30899](https://solved.ac/problems/30899) | | **C** | Chair Dance | `nwerc/2023/chairdance` | `nwerc/2023/problem-set.pdf` | [chairdance](https://open.kattis.com/problems/chairdance) | [30900](https://solved.ac/problems/30900) | | **D** | Date Picker | `nwerc/2023/datepicker` | `nwerc/2023/problem-set.pdf` | [datepicker](https://open.kattis.com/problems/datepicker) | [30901](https://solved.ac/problems/30901) | | **E** | Exponentiation | `nwerc/2023/exponentiation` | `nwerc/2023/problem-set.pdf` | [exponentiation](https://open.kattis.com/problems/exponentiation) | [30902](https://solved.ac/problems/30902) | | **F** | Fixing Fractions | `nwerc/2023/fixingfractions` | `nwerc/2023/problem-set.pdf` | [fixingfractions](https://open.kattis.com/problems/fixingfractions) | [30903](https://solved.ac/problems/30903) | | **G** | Galaxy Quest | `nwerc/2023/galaxyquest` | `nwerc/2023/problem-set.pdf` | [galaxyquest2](https://open.kattis.com/problems/galaxyquest2) | [30904](https://solved.ac/problems/30904) | | **H** | Higher Arithmetic | `nwerc/2023/higherarithmetic` | `nwerc/2023/problem-set.pdf` | [higherarithmetic](https://open.kattis.com/problems/higherarithmetic) | [30905](https://solved.ac/problems/30905) | | **I** | Isolated Island | `nwerc/2023/isolatedisland` | `nwerc/2023/problem-set.pdf` | [isolatedisland](https://open.kattis.com/problems/isolatedisland) | [30906](https://solved.ac/problems/30906) | | **J** | Jogging Tour | `nwerc/2023/joggingtour` | `nwerc/2023/problem-set.pdf` | [joggingtour](https://open.kattis.com/problems/joggingtour) | [30907](https://solved.ac/problems/30907) | | **K** | Klompendans | `nwerc/2023/klompendans` | `nwerc/2023/problem-set.pdf` | [klompendans](https://open.kattis.com/problems/klompendans) | [30908](https://solved.ac/problems/30908) | | **L** | Lateral Damage | `nwerc/2023/lateraldamage` | `nwerc/2023/problem-set.pdf` | [lateraldamage](https://open.kattis.com/problems/lateraldamage) | [30909](https://solved.ac/problems/30909) | --- ## Northwestern Europe Regional Contest (2024) - **Contest Slug:** `nwerc` - **Year:** 2024 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202024) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4356) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------- | :----------------------------------- | :--------------------------- | :---------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Alphabetical Aristocrats | `nwerc/2024/alphabeticalaristocrats` | `nwerc/2024/problem-set.pdf` | [alphabeticalaristocrats](https://open.kattis.com/problems/alphabeticalaristocrats) | [32889](https://solved.ac/problems/32889) | | **B** | Binary Search | `nwerc/2024/binarysearch` | `nwerc/2024/problem-set.pdf` | [binarysearch](https://open.kattis.com/problems/binarysearch) | [32890](https://solved.ac/problems/32890) | | **C** | Connect Five | `nwerc/2024/connectfive` | `nwerc/2024/problem-set.pdf` | [connectfive](https://open.kattis.com/problems/connectfive) | [32891](https://solved.ac/problems/32891) | | **D** | Dutch Democracy | `nwerc/2024/dutchdemocracy` | `nwerc/2024/problem-set.pdf` | [dutchdemocracy](https://open.kattis.com/problems/dutchdemocracy) | [32892](https://solved.ac/problems/32892) | | **E** | Evolving Etymology | `nwerc/2024/evolvingetymology` | `nwerc/2024/problem-set.pdf` | [evolvingetymology](https://open.kattis.com/problems/evolvingetymology) | [32893](https://solved.ac/problems/32893) | | **F** | Flowing Fountain | `nwerc/2024/flowingfountain` | `nwerc/2024/problem-set.pdf` | [flowingfountain](https://open.kattis.com/problems/flowingfountain) | [32894](https://solved.ac/problems/32894) | | **G** | Glued Grid | `nwerc/2024/gluedgrid` | `nwerc/2024/problem-set.pdf` | [gluedgrid](https://open.kattis.com/problems/gluedgrid) | [32895](https://solved.ac/problems/32895) | | **H** | Hash Collision | `nwerc/2024/hashcollision` | `nwerc/2024/problem-set.pdf` | [hashcollision](https://open.kattis.com/problems/hashcollision) | [32896](https://solved.ac/problems/32896) | | **I** | It's a Kind of Magic | `nwerc/2024/itsakindofmagic` | `nwerc/2024/problem-set.pdf` | [itsakindofmagic](https://open.kattis.com/problems/itsakindofmagic) | [32897](https://solved.ac/problems/32897) | | **J** | Jib Job | `nwerc/2024/jibjob` | `nwerc/2024/problem-set.pdf` | [jibjob](https://open.kattis.com/problems/jibjob) | [32898](https://solved.ac/problems/32898) | | **K** | Kruidnoten | `nwerc/2024/kruidnoten` | `nwerc/2024/problem-set.pdf` | [kruidnoten](https://open.kattis.com/problems/kruidnoten) | [32899](https://solved.ac/problems/32899) | | **L** | Limited Library | `nwerc/2024/limitedlibrary` | `nwerc/2024/problem-set.pdf` | [limitedlibrary](https://open.kattis.com/problems/limitedlibrary) | [32900](https://solved.ac/problems/32900) | | **M** | Mouse Trap | `nwerc/2024/mousetrap` | `nwerc/2024/problem-set.pdf` | [mousetrap](https://open.kattis.com/problems/mousetrap) | [32901](https://solved.ac/problems/32901) | --- ## Northwestern Europe Regional Contest (2025) - **Contest Slug:** `nwerc` - **Year:** 2025 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202025) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4637) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------- | :----------------------------------------------- | :--------------------------- | :----------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Arcade Crane | `nwerc/2025/arcadecrane/arcadecrane` | `nwerc/2025/problem-set.pdf` | [arcadecrane](https://open.kattis.com/problems/arcadecrane) | [35072](https://solved.ac/problems/35072) | | **B** | Bisecting Bargain | `nwerc/2025/bisectingbargain/bisectingbargain` | `nwerc/2025/problem-set.pdf` | [bisectingbargain](https://open.kattis.com/problems/bisectingbargain) | [35073](https://solved.ac/problems/35073) | | **C** | Canal Crossing | `nwerc/2025/canalcrossing/canalcrossing` | `nwerc/2025/problem-set.pdf` | [canalcrossing](https://open.kattis.com/problems/canalcrossing) | [35074](https://solved.ac/problems/35074) | | **D** | Dreamcatcher | `nwerc/2025/dreamcatcher/dreamcatcher` | `nwerc/2025/problem-set.pdf` | [dreamcatcher](https://open.kattis.com/problems/dreamcatcher) | [35075](https://solved.ac/problems/35075) | | **E** | Erratic Lights | `nwerc/2025/erraticlights/erraticlights` | `nwerc/2025/problem-set.pdf` | [erraticlights](https://open.kattis.com/problems/erraticlights) | [35076](https://solved.ac/problems/35076) | | **F** | Fair Share | `nwerc/2025/fairshare/fairshare` | `nwerc/2025/problem-set.pdf` | [fairshare](https://open.kattis.com/problems/fairshare) | [35077](https://solved.ac/problems/35077) | | **G** | Group Photo | `nwerc/2025/groupphoto/groupphoto` | `nwerc/2025/problem-set.pdf` | [groupphoto](https://open.kattis.com/problems/groupphoto) | [35078](https://solved.ac/problems/35078) | | **H** | Hasty Haul | `nwerc/2025/hastyhaul/hastyhaul` | `nwerc/2025/problem-set.pdf` | - | [35079](https://solved.ac/problems/35079) | | **I** | Illuminated Stalls | `nwerc/2025/illuminatedstalls/illuminatedstalls` | `nwerc/2025/problem-set.pdf` | [illuminatedstalls](https://open.kattis.com/problems/illuminatedstalls) | [35080](https://solved.ac/problems/35080) | | **J** | Juggling Keys | `nwerc/2025/jugglingkeys/jugglingkeys` | `nwerc/2025/problem-set.pdf` | - | [35081](https://solved.ac/problems/35081) | | **K** | KIT Finding | `nwerc/2025/kitfinding/kitfinding` | `nwerc/2025/problem-set.pdf` | [kitfinding](https://open.kattis.com/problems/kitfinding) | [35082](https://solved.ac/problems/35082) | | **L** | Last Christmas | `nwerc/2025/lastchristmas/lastchristmas` | `nwerc/2025/problem-set.pdf` | [lastchristmas](https://open.kattis.com/problems/lastchristmas) | [35083](https://solved.ac/problems/35083) | --- ## Pacific Northwest Regional Contest (2007) - **Contest Slug:** `pacnw` - **Year:** 2007 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/130) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------------------------------------------ | :--------------------------------- | :----------------------------------------------------------- | :----: | :-------------------------------------: | | **A** | Rock, Paper, or Scissors? | `pacnw/2007/a_rock_paper_scissors` | `pacnw/2007/a_rock_paper_scissors/a_rock_paper_scissors.pdf` | - | [4493](https://solved.ac/problems/4493) | | **B** | Missile Command | `pacnw/2007/b_missile_command` | `pacnw/2007/b_missile_command/b_missile_command.pdf` | - | [4494](https://solved.ac/problems/4494) | | **C** | Palindromic Primes Category in Jeopardy! | `pacnw/2007/c_jeopardy` | `pacnw/2007/c_jeopardy/c_jeopardy.pdf` | - | [4495](https://solved.ac/problems/4495) | | **D** | Pebbles | `pacnw/2007/d_pebbles` | `pacnw/2007/d_pebbles/d_pebbles.pdf` | - | [4496](https://solved.ac/problems/4496) | | **E** | Rubik's Cube® | `pacnw/2007/e_rubiks_cube` | `pacnw/2007/e_rubiks_cube/e_rubiks_cube.pdf` | - | [4497](https://solved.ac/problems/4497) | | **F** | Geek Challenge [SKRZAT] (Base Minus Two) | `pacnw/2007/f_skrzat` | `pacnw/2007/f_skrzat/f_skrzat.pdf` | - | [4498](https://solved.ac/problems/4498) | | **G** | Frogger | `pacnw/2007/g_frogger` | `pacnw/2007/g_frogger/g_frogger.pdf` | - | [4499](https://solved.ac/problems/4499) | | **H** | "Bubble Gum, Bubble Gum, in the dish, how many pieces do you wish?" | `pacnw/2007/h_bubble_gum` | `pacnw/2007/h_bubble_gum/h_bubble_gum.pdf` | - | [4500](https://solved.ac/problems/4500) | | **I** | Games R Us | `pacnw/2007/i_games_r_us` | `pacnw/2007/i_games_r_us/i_games_r_us.pdf` | - | [4501](https://solved.ac/problems/4501) | | **J** | Cover Up | `pacnw/2007/j_cover_up` | `pacnw/2007/j_cover_up/j_cover_up.pdf` | - | [4502](https://solved.ac/problems/4502) | | **K** | Bridged Marble Rings | `pacnw/2007/k_marbles` | `pacnw/2007/k_marbles/k_marbles.pdf` | - | [4503](https://solved.ac/problems/4503) | --- ## Pacific Northwest Regional Contest (2008) - **Contest Slug:** `pacnw` - **Year:** 2008 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/129) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------------------------------------- | :------------------------------------------ | :----------------------------------------------------------------------------- | :----: | :-------------------------------------: | | **A** | Tetrahedral Stacks of Cannonballs | `pacnw/2008/a_cannon_balls` | `pacnw/2008/a_cannon_balls/a_cannon_balls.pdf` | - | [4482](https://solved.ac/problems/4482) | | **B** | "Robot Roll Call – Cambot...Servo...Gypsy...Croooow" | `pacnw/2008/b_robot_roll_call` | `pacnw/2008/b_robot_roll_call/b_robot_roll_call.pdf` | - | [4483](https://solved.ac/problems/4483) | | **C** | Cave Crisis | `pacnw/2008/c_cave` | `pacnw/2008/c_cave/c_cave.pdf` | - | [4484](https://solved.ac/problems/4484) | | **D** | Obstacle Course | `pacnw/2008/d_obstacle_course` | `pacnw/2008/d_obstacle_course/d_obstacle_course.pdf` | - | [4485](https://solved.ac/problems/4485) | | **E** | Pencils from the 19th Century | `pacnw/2008/e_pencils` | `pacnw/2008/e_pencils/e_pencils.pdf` | - | [4486](https://solved.ac/problems/4486) | | **F** | Optimal Strategy for the ICPC | `pacnw/2008/f_winning_strategy` | `pacnw/2008/f_winning_strategy/f_winning_strategy.pdf` | - | [4487](https://solved.ac/problems/4487) | | **G** | Symbolic Logic Mechanization | `pacnw/2008/g_symbolic_logic_mechanization` | `pacnw/2008/g_symbolic_logic_mechanization/g_symbolic_logic_mechanization.pdf` | - | [4488](https://solved.ac/problems/4488) | | **H** | Repair Depots | `pacnw/2008/h_repair_depots` | `pacnw/2008/h_repair_depots/h_repair_depots.pdf` | - | [4489](https://solved.ac/problems/4489) | | **I** | Crazy Circuits | `pacnw/2008/i_circuit` | `pacnw/2008/i_circuit/i_circuit.pdf` | - | [4490](https://solved.ac/problems/4490) | | **J** | PropBot | `pacnw/2008/j_propbot` | `pacnw/2008/j_propbot/j_propbot.pdf` | - | [4491](https://solved.ac/problems/4491) | | **K** | "Ancient" Calculator | `pacnw/2008/k_ancient_calculator` | `pacnw/2008/k_ancient_calculator/k_ancient_calculator.pdf` | - | [4492](https://solved.ac/problems/4492) | --- ## Pacific Northwest Regional Contest (2009) - **Contest Slug:** `pacnw` - **Year:** 2009 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/128) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------------- | :---------------- | :--------------------- | :----: | :-------------------------------------: | | **A** | Problem: A | `pacnw/2009/a` | `pacnw/2009/a/a.pdf` | - | [4471](https://solved.ac/problems/4471) | | **B** | Blenjeel Sand Worms and Color Wriggles | `pacnw/2009/b` | `pacnw/2009/b/b.pdf` | - | [4472](https://solved.ac/problems/4472) | | **C** | This Can't Go On Forever | `pacnw/2009/c` | `pacnw/2009/c/c.pdf` | - | [4473](https://solved.ac/problems/4473) | | **D** | Rescue Beacon | `pacnw/2009/d` | `pacnw/2009/d/d.pdf` | - | [4474](https://solved.ac/problems/4474) | | **E** | Let the Wookiee Win! | `pacnw/2009/e` | `pacnw/2009/e/e.pdf` | - | [4475](https://solved.ac/problems/4475) | | **F** | Laser Turret Maintenance | `pacnw/2009/f` | `pacnw/2009/f/f.pdf` | - | [4476](https://solved.ac/problems/4476) | | **G** | George Lucas and 1138 | `pacnw/2009/g` | `pacnw/2009/g/g.pdf` | - | [4477](https://solved.ac/problems/4477) | | **H** | Spare the Ewoks! | `pacnw/2009/h` | `pacnw/2009/h/h.pdf` | - | [4478](https://solved.ac/problems/4478) | | **I** | The History of the Sith Rulers | `pacnw/2009/i` | `pacnw/2009/i/i.pdf` | - | [4479](https://solved.ac/problems/4479) | | **J** | Laser Shot | `pacnw/2009/j` | `pacnw/2009/j/j.pdf` | - | [4480](https://solved.ac/problems/4480) | | **K** | Power Grid | `pacnw/2009/k` | `pacnw/2009/k/k.pdf` | - | [4481](https://solved.ac/problems/4481) | --- ## Pacific Northwest Regional Contest (2010) - **Contest Slug:** `pacnw` - **Year:** 2010 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/127) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------------------------------- | :--------------------------------- | :----------------------------------------------------------- | :----: | :-------------------------------------: | | **A** | Always Follow the Rules in Zombieland | `pacnw/2010/aZombieLandRules` | `pacnw/2010/aZombieLandRules/aZombieLandRules.pdf` | - | [4459](https://solved.ac/problems/4459) | | **B** | Zombie Containment | `pacnw/2010/bContainment` | `pacnw/2010/bContainment/bContainment.pdf` | - | [4460](https://solved.ac/problems/4460) | | **C** | Mesmerization of The Count | `pacnw/2010/cTheCount` | `pacnw/2010/cTheCount/cTheCount.pdf` | - | [4461](https://solved.ac/problems/4461) | | **D** | Zombie Swallows | `pacnw/2010/dZombieSwallows` | `pacnw/2010/dZombieSwallows/dZombieSwallows.pdf` | - | [4462](https://solved.ac/problems/4462) | | **E** | Decomposing Fibonacci Numbers | `pacnw/2010/eDecomposingFibonacci` | `pacnw/2010/eDecomposingFibonacci/eDecomposingFibonacci.pdf` | - | [4463](https://solved.ac/problems/4463) | | **F** | Pride and Prejudice and Zombies | `pacnw/2010/fVampireNumbers` | `pacnw/2010/fVampireNumbers/fVampireNumbers.pdf` | - | [4464](https://solved.ac/problems/4464) | | **G** | Tales from DeCrypt | `pacnw/2010/gDeCrypt` | `pacnw/2010/gDeCrypt/gDeCrypt.pdf` | - | [4465](https://solved.ac/problems/4465) | | **H** | A Smart Brain is a Tasty Brain | `pacnw/2010/hGoodBrainOrBad` | `pacnw/2010/hGoodBrainOrBad/hGoodBrainOrBad.pdf` | - | [4466](https://solved.ac/problems/4466) | | **I** | Containing Zombies and Respecting Building Codes | `pacnw/2010/ifences` | `pacnw/2010/ifences/ifences.pdf` | - | [4467](https://solved.ac/problems/4467) | | **J** | Save the Python Programmers! | `pacnw/2010/jPython` | `pacnw/2010/jPython/jPython.pdf` | - | [4468](https://solved.ac/problems/4468) | | **K** | Zombie Blast! | `pacnw/2010/kZombieBlast` | `pacnw/2010/kZombieBlast/kZombieBlast.pdf` | - | [4469](https://solved.ac/problems/4469) | --- ## Pacific Northwest Regional Contest (2011) - **Contest Slug:** `pacnw` - **Year:** 2011 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/126) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------------------- | :---------------- | :-------------------------------------- | :----: | :-------------------------------------: | | **A** | Good or Bad? | `pacnw/2011/a` | `pacnw/2011/icpc-statements-2011/a.pdf` | - | [4447](https://solved.ac/problems/4447) | | **B** | Bracelets | `pacnw/2011/b` | `pacnw/2011/icpc-statements-2011/b.pdf` | - | [4448](https://solved.ac/problems/4448) | | **C** | A Classic Myth: Flatland Superhero | `pacnw/2011/c` | `pacnw/2011/icpc-statements-2011/c.pdf` | - | [4449](https://solved.ac/problems/4449) | | **D** | Collateral Cleanup | `pacnw/2011/d` | `pacnw/2011/icpc-statements-2011/d.pdf` | - | [4450](https://solved.ac/problems/4450) | | **E** | LatticeLand | `pacnw/2011/e` | `pacnw/2011/icpc-statements-2011/e.pdf` | - | [4451](https://solved.ac/problems/4451) | | **F** | Lightning Lessons | `pacnw/2011/f` | `pacnw/2011/icpc-statements-2011/f.pdf` | - | [4452](https://solved.ac/problems/4452) | | **G** | Locksmith | `pacnw/2011/g` | `pacnw/2011/icpc-statements-2011/g.pdf` | - | [4453](https://solved.ac/problems/4453) | | **H** | Speed Racer | `pacnw/2011/h` | `pacnw/2011/icpc-statements-2011/h.pdf` | - | [4454](https://solved.ac/problems/4454) | | **I** | The Status is Not Quo | `pacnw/2011/i` | `pacnw/2011/icpc-statements-2011/i.pdf` | - | [4455](https://solved.ac/problems/4455) | | **J** | Stupendous Man | `pacnw/2011/j` | `pacnw/2011/icpc-statements-2011/j.pdf` | - | [4456](https://solved.ac/problems/4456) | | **K** | Tree Count | `pacnw/2011/k` | `pacnw/2011/icpc-statements-2011/k.pdf` | - | [4457](https://solved.ac/problems/4457) | --- ## Pacific Northwest Regional Contest (2012) - **Contest Slug:** `pacnw` - **Year:** 2012 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/125) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------------------------- | :--------------------------- | :---------------------------------------------- | :----: | :-------------------------------------: | | **A** | Good Versus Evil | `pacnw/2012/GoodVersusEvil` | `pacnw/2012/ICPCPacNW2012ProblemStatements.pdf` | - | [4435](https://solved.ac/problems/4435) | | **B** | Magic Multiple | `pacnw/2012/MagicMultiple` | `pacnw/2012/ICPCPacNW2012ProblemStatements.pdf` | - | [4436](https://solved.ac/problems/4436) | | **C** | Painted Cube | `pacnw/2012/PaintedCube` | `pacnw/2012/ICPCPacNW2012ProblemStatements.pdf` | - | [4437](https://solved.ac/problems/4437) | | **D** | Partition | `pacnw/2012/Partition` | `pacnw/2012/ICPCPacNW2012ProblemStatements.pdf` | - | [4438](https://solved.ac/problems/4438) | | **E** | Rings and Runes | `pacnw/2012/RingsAndRunes` | `pacnw/2012/ICPCPacNW2012ProblemStatements.pdf` | - | [4439](https://solved.ac/problems/4439) | | **F** | Ritual Circle | `pacnw/2012/RitualCircle` | `pacnw/2012/ICPCPacNW2012ProblemStatements.pdf` | - | [4440](https://solved.ac/problems/4440) | | **G** | Saruman's Level Up | `pacnw/2012/SarumansLevelUp` | `pacnw/2012/ICPCPacNW2012ProblemStatements.pdf` | - | [4441](https://solved.ac/problems/4441) | | **H** | Seating Chart | `pacnw/2012/SeatingChart` | `pacnw/2012/ICPCPacNW2012ProblemStatements.pdf` | - | [4442](https://solved.ac/problems/4442) | | **I** | Spellcasting | `pacnw/2012/Spellcasting` | `pacnw/2012/ICPCPacNW2012ProblemStatements.pdf` | - | [4443](https://solved.ac/problems/4443) | | **J** | Temple Build | `pacnw/2012/TempleBuild` | `pacnw/2012/ICPCPacNW2012ProblemStatements.pdf` | - | [4444](https://solved.ac/problems/4444) | | **K** | Tile Cut | `pacnw/2012/TileCut` | `pacnw/2012/ICPCPacNW2012ProblemStatements.pdf` | - | [4445](https://solved.ac/problems/4445) | | **L** | Tongues | `pacnw/2012/Tongues` | `pacnw/2012/ICPCPacNW2012ProblemStatements.pdf` | - | [4446](https://solved.ac/problems/4446) | ### Practice Session | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------------------------- | :--------------------------- | :---------------------------------------------- | :----: | :-------------------------------------: | | **P** | Practice Problem: Print the Last Character | `pacnw/2012/PRACTICE` | `pacnw/2012/PRACTICE/Practice.pdf` | - | - | --- ## Pacific Northwest Regional Contest (2013) - **Contest Slug:** `pacnw` - **Year:** 2013 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1173) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------- | :------------------------- | :------------------------------------------------- | :----: | :-------------------------------------: | | **A** | Assignments | `pacnw/2013/Assignments` | `pacnw/2013/ICPC_PacNW_2013_ProblemStatements.pdf` | - | [9501](https://solved.ac/problems/9501) | | **B** | Bones's Battery | `pacnw/2013/Bones` | `pacnw/2013/ICPC_PacNW_2013_ProblemStatements.pdf` | - | [9502](https://solved.ac/problems/9502) | | **C** | Crusher's Code | `pacnw/2013/Crusher` | `pacnw/2013/ICPC_PacNW_2013_ProblemStatements.pdf` | - | [9503](https://solved.ac/problems/9503) | | **D** | Delta Quadrant | `pacnw/2013/DeltaQuadrant` | `pacnw/2013/ICPC_PacNW_2013_ProblemStatements.pdf` | - | [9504](https://solved.ac/problems/9504) | | **E** | Enterprising Escape | `pacnw/2013/Escape` | `pacnw/2013/ICPC_PacNW_2013_ProblemStatements.pdf` | - | [9505](https://solved.ac/problems/9505) | | **F** | Federation Favorites | `pacnw/2013/Federation` | `pacnw/2013/ICPC_PacNW_2013_ProblemStatements.pdf` | - | [9506](https://solved.ac/problems/9506) | | **G** | Generations of Tribbles | `pacnw/2013/Generations` | `pacnw/2013/ICPC_PacNW_2013_ProblemStatements.pdf` | - | [9507](https://solved.ac/problems/9507) | | **H** | Holodeck Hacking | `pacnw/2013/Holodeck` | `pacnw/2013/ICPC_PacNW_2013_ProblemStatements.pdf` | - | [9508](https://solved.ac/problems/9508) | | **I** | Interstellar Trade | `pacnw/2013/Interstellar` | `pacnw/2013/ICPC_PacNW_2013_ProblemStatements.pdf` | - | [9509](https://solved.ac/problems/9509) | | **J** | Janeway's Journey | `pacnw/2013/Janeway` | `pacnw/2013/ICPC_PacNW_2013_ProblemStatements.pdf` | - | [9510](https://solved.ac/problems/9510) | | **K** | Klingon Warfare | `pacnw/2013/Klingons` | `pacnw/2013/ICPC_PacNW_2013_ProblemStatements.pdf` | - | [9511](https://solved.ac/problems/9511) | | **L** | Languages | `pacnw/2013/Languages` | `pacnw/2013/ICPC_PacNW_2013_ProblemStatements.pdf` | - | [9512](https://solved.ac/problems/9512) | | **M** | Mass Production | `pacnw/2013/M5` | `pacnw/2013/ICPC_PacNW_2013_ProblemStatements.pdf` | - | [9513](https://solved.ac/problems/9513) | --- ## Pacific Northwest Regional Contest (2014) - **Contest Slug:** `pacnw` - **Year:** 2014 - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/1317) | [Div 2](https://solved.ac/problems/archive/contest/1318) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------- | :-------------------------- | :--------------------- | :----: | :---------------------------------------: | | **A** | Runes | `pacnw/2014/Runes` | `pacnw/2014/div1.pdf` | - | [10557](https://solved.ac/problems/10557) | | **B** | Alchemy | `pacnw/2014/Alchemy` | `pacnw/2014/div1.pdf` | - | [10558](https://solved.ac/problems/10558) | | **C** | Containment | `pacnw/2014/Containment` | `pacnw/2014/div1.pdf` | - | [10559](https://solved.ac/problems/10559) | | **D** | Function | `pacnw/2014/Function` | `pacnw/2014/div1.pdf` | - | [10560](https://solved.ac/problems/10560) | | **E** | Hill Number | `pacnw/2014/HillNumber` | `pacnw/2014/div1.pdf` | - | [10561](https://solved.ac/problems/10561) | | **F** | Knights | `pacnw/2014/Knights` | `pacnw/2014/div1.pdf` | - | [10562](https://solved.ac/problems/10562) | | **G** | Number Game | `pacnw/2014/NumberGame` | `pacnw/2014/div1.pdf` | - | [10563](https://solved.ac/problems/10563) | | **H** | Pushups | `pacnw/2014/Pushups` | `pacnw/2014/div1.pdf` | - | [10564](https://solved.ac/problems/10564) | | **I** | Salary Inequity | `pacnw/2014/SalaryInequity` | `pacnw/2014/div1.pdf` | - | [10565](https://solved.ac/problems/10565) | | **J** | Stamp Stamp | `pacnw/2014/StampStamp` | `pacnw/2014/div1.pdf` | - | [10566](https://solved.ac/problems/10566) | | **K** | Towers | `pacnw/2014/Towers` | `pacnw/2014/div1.pdf` | - | [10567](https://solved.ac/problems/10567) | | **L** | Wormholes | `pacnw/2014/Wormhole` | `pacnw/2014/div1.pdf` | - | [10568](https://solved.ac/problems/10568) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------- | :-------------------------- | :--------------------- | :----: | :---------------------------------------: | | **M** | Polyhedra | `pacnw/2014/Polyhedra` | `pacnw/2014/div2.pdf` | - | [10569](https://solved.ac/problems/10569) | | **N** | Majority | `pacnw/2014/Majority` | `pacnw/2014/div2.pdf` | - | [10570](https://solved.ac/problems/10570) | | **O** | Diamonds | `pacnw/2014/Diamonds` | `pacnw/2014/div2.pdf` | - | [10571](https://solved.ac/problems/10571) | | **P** | Gold Leaf | `pacnw/2014/GoldLeaf` | `pacnw/2014/div2.pdf` | - | [10572](https://solved.ac/problems/10572) | | **Q** | Number Game | `pacnw/2014/NumberGame` | `pacnw/2014/div2.pdf` | - | [10563](https://solved.ac/problems/10563) | | **R** | Ramp Number | `pacnw/2014/RampNumber` | `pacnw/2014/div2.pdf` | - | [10573](https://solved.ac/problems/10573) | | **S** | Ranked Choice | `pacnw/2014/RankedChoice` | `pacnw/2014/div2.pdf` | - | [10574](https://solved.ac/problems/10574) | | **T** | Runes | `pacnw/2014/Runes` | `pacnw/2014/div2.pdf` | - | [10557](https://solved.ac/problems/10557) | | **U** | Top 25 | `pacnw/2014/Top25` | `pacnw/2014/div2.pdf` | - | [10575](https://solved.ac/problems/10575) | | **V** | Towers | `pacnw/2014/Towers` | `pacnw/2014/div2.pdf` | - | [10567](https://solved.ac/problems/10567) | | **W** | Wormholes | `pacnw/2014/Wormhole` | `pacnw/2014/div2.pdf` | - | [10568](https://solved.ac/problems/10568) | | **X** | Wrench | `pacnw/2014/Wrench` | `pacnw/2014/div2.pdf` | - | [10576](https://solved.ac/problems/10576) | --- ## Pacific Northwest Regional Contest (2015) - **Contest Slug:** `pacnw` - **Year:** 2015 - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/1424) | [Div 2](https://solved.ac/problems/archive/contest/1425) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------- | :--------------------------- | :--------------------- | :----: | :---------------------------------------: | | **A** | Airports | `pacnw/2015/Airports` | `pacnw/2015/div1.pdf` | - | [11593](https://solved.ac/problems/11593) | | **B** | Butterfly Effect | `pacnw/2015/ButterflyEffect` | `pacnw/2015/div1.pdf` | - | [11594](https://solved.ac/problems/11594) | | **C** | Classy | `pacnw/2015/Classy` | `pacnw/2015/div1.pdf` | - | [11595](https://solved.ac/problems/11595) | | **D** | Triangle | `pacnw/2015/Triangle` | `pacnw/2015/div1.pdf` | - | [11596](https://solved.ac/problems/11596) | | **E** | Excellence | `pacnw/2015/Excellence` | `pacnw/2015/div1.pdf` | - | [11597](https://solved.ac/problems/11597) | | **F** | Falling Blocks | `pacnw/2015/FallingBlocks` | `pacnw/2015/div1.pdf` | - | [11598](https://solved.ac/problems/11598) | | **G** | Racing Gems | `pacnw/2015/RacingGems` | `pacnw/2015/div1.pdf` | - | [11599](https://solved.ac/problems/11599) | | **H** | Hilbert Sort | `pacnw/2015/HilbertSort` | `pacnw/2015/div1.pdf` | - | [11600](https://solved.ac/problems/11600) | | **I** | Coverage | `pacnw/2015/Coverage` | `pacnw/2015/div1.pdf` | - | [11601](https://solved.ac/problems/11601) | | **J** | Olympics | `pacnw/2015/Olympics` | `pacnw/2015/div1.pdf` | - | [11602](https://solved.ac/problems/11602) | | **K** | Checkers | `pacnw/2015/Checkers` | `pacnw/2015/div1.pdf` | - | [11603](https://solved.ac/problems/11603) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------- | :--------------------------- | :--------------------- | :----: | :---------------------------------------: | | **L** | Millionaire | `pacnw/2015/Millionaire` | `pacnw/2015/div2.pdf` | - | [11604](https://solved.ac/problems/11604) | | **M** | Magic Trick | `pacnw/2015/MagicTrick` | `pacnw/2015/div2.pdf` | - | [11605](https://solved.ac/problems/11605) | | **N** | Egg Drop | `pacnw/2015/EggDrop` | `pacnw/2015/div2.pdf` | - | [11606](https://solved.ac/problems/11606) | | **O** | Grid | `pacnw/2015/Grid` | `pacnw/2015/div2.pdf` | - | [11607](https://solved.ac/problems/11607) | | **P** | Complexity | `pacnw/2015/Complexity` | `pacnw/2015/div2.pdf` | - | [11608](https://solved.ac/problems/11608) | | **Q** | Excellence | `pacnw/2015/Excellence` | `pacnw/2015/div2.pdf` | - | [11597](https://solved.ac/problems/11597) | | **R** | Class Time | `pacnw/2015/ClassTime` | `pacnw/2015/div2.pdf` | - | [11609](https://solved.ac/problems/11609) | | **S** | Surf | `pacnw/2015/Surf` | `pacnw/2015/div2.pdf` | - | [11610](https://solved.ac/problems/11610) | | **T** | Triangle | `pacnw/2015/Triangle` | `pacnw/2015/div2.pdf` | - | [11596](https://solved.ac/problems/11596) | | **U** | Blur | `pacnw/2015/Blur` | `pacnw/2015/div2.pdf` | - | [11611](https://solved.ac/problems/11611) | | **V** | Gears | `pacnw/2015/Gears` | `pacnw/2015/div2.pdf` | - | [11612](https://solved.ac/problems/11612) | --- ## Pacific Northwest Regional Contest (2016) - **Contest Slug:** `pacnw` - **Year:** 2016 - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/1583) | [Div 2](https://solved.ac/problems/archive/contest/1584) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------- | :--------------------------- | :--------------------- | :----: | :---------------------------------------: | | **A** | Alphabet | `pacnw/2016/Alphabet` | `pacnw/2016/div1.pdf` | - | [13741](https://solved.ac/problems/13741) | | **B** | Buggy Robot | `pacnw/2016/BuggyRobot` | `pacnw/2016/div1.pdf` | - | [13734](https://solved.ac/problems/13734) | | **C** | Cameras | `pacnw/2016/Cameras` | `pacnw/2016/div1.pdf` | - | [13978](https://solved.ac/problems/13978) | | **D** | Contest Strategy | `pacnw/2016/ContestStrats` | `pacnw/2016/div1.pdf` | - | [13979](https://solved.ac/problems/13979) | | **E** | Enclosure | `pacnw/2016/EnclosureArea` | `pacnw/2016/div1.pdf` | - | [13743](https://solved.ac/problems/13743) | | **F** | Illumination | `pacnw/2016/Illumination` | `pacnw/2016/div1.pdf` | - | [13744](https://solved.ac/problems/13744) | | **G** | Maximum Islands | `pacnw/2016/MaximumIslands` | `pacnw/2016/div1.pdf` | - | [13980](https://solved.ac/problems/13980) | | **H** | Paint | `pacnw/2016/Paint` | `pacnw/2016/div1.pdf` | - | [13747](https://solved.ac/problems/13747) | | **I** | Postman | `pacnw/2016/Postman` | `pacnw/2016/div1.pdf` | - | [13981](https://solved.ac/problems/13981) | | **J** | Shopping | `pacnw/2016/Shopping` | `pacnw/2016/div1.pdf` | - | [13982](https://solved.ac/problems/13982) | | **K** | Tournament Wins | `pacnw/2016/TournamentWins` | `pacnw/2016/div1.pdf` | - | [13983](https://solved.ac/problems/13983) | | **L** | Windy Path | `pacnw/2016/WindyPath` | `pacnw/2016/div1.pdf` | - | [13740](https://solved.ac/problems/13740) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------- | :--------------------------- | :--------------------- | :----: | :---------------------------------------: | | **M** | Alphabet | `pacnw/2016/Alphabet` | `pacnw/2016/div2.pdf` | - | [13741](https://solved.ac/problems/13741) | | **N** | Barbells | `pacnw/2016/Barbells` | `pacnw/2016/div2.pdf` | - | [13751](https://solved.ac/problems/13751) | | **O** | Buggy Robot | `pacnw/2016/BuggyRobot` | `pacnw/2016/div2.pdf` | - | [13734](https://solved.ac/problems/13734) | | **P** | Cameras | `pacnw/2016/Cameras` | `pacnw/2016/div2.pdf` | - | [13978](https://solved.ac/problems/13978) | | **Q** | Contest Score | `pacnw/2016/ContestScore` | `pacnw/2016/div2.pdf` | - | [13984](https://solved.ac/problems/13984) | | **R** | Equality | `pacnw/2016/Equality` | `pacnw/2016/div2.pdf` | - | [13985](https://solved.ac/problems/13985) | | **S** | Gravity | `pacnw/2016/Gravity` | `pacnw/2016/div2.pdf` | - | [13986](https://solved.ac/problems/13986) | | **T** | Islands | `pacnw/2016/Islands` | `pacnw/2016/div2.pdf` | - | [13746](https://solved.ac/problems/13746) | | **U** | Mismatched Socks | `pacnw/2016/MismatchedSocks` | `pacnw/2016/div2.pdf` | - | [13754](https://solved.ac/problems/13754) | | **V** | Postman | `pacnw/2016/Postman` | `pacnw/2016/div2.pdf` | - | [13981](https://solved.ac/problems/13981) | | **W** | Six Sides | `pacnw/2016/SixSides` | `pacnw/2016/div2.pdf` | - | [13987](https://solved.ac/problems/13987) | | **X** | Three Square | `pacnw/2016/ThreeSquare` | `pacnw/2016/div2.pdf` | - | [14418](https://solved.ac/problems/14418) | | **Y** | Zigzag | `pacnw/2016/ZigZag` | `pacnw/2016/div2.pdf` | - | [13750](https://solved.ac/problems/13750) | --- ## Pacific Northwest Regional Contest (2017) - **Contest Slug:** `pacnw` - **Year:** 2017 - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/1791) | [Div 2](https://solved.ac/problems/archive/contest/1792) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------- | :--------------------------------- | :--------------------- | :----: | :---------------------------------------: | | **A** | Odd Palindrome | `pacnw/2017/OddPalindrome` | `pacnw/2017/div1.pdf` | - | [15104](https://solved.ac/problems/15104) | | **B** | Enlarging Enthusiasm | `pacnw/2017/EnlargingEnthusiasm` | `pacnw/2017/div1.pdf` | - | [15105](https://solved.ac/problems/15105) | | **C** | Fear Factoring | `pacnw/2017/FearFactoring` | `pacnw/2017/div1.pdf` | - | [15106](https://solved.ac/problems/15106) | | **D** | Rainbow Roads | `pacnw/2017/RainbowRoads` | `pacnw/2017/div1.pdf` | - | [15107](https://solved.ac/problems/15107) | | **E** | Straight Shot | `pacnw/2017/StraightShot` | `pacnw/2017/div1.pdf` | - | [15108](https://solved.ac/problems/15108) | | **F** | Distinct Distances | `pacnw/2017/DistinctDistances` | `pacnw/2017/div1.pdf` | - | [15109](https://solved.ac/problems/15109) | | **G** | Security Badge | `pacnw/2017/SecurityBadge` | `pacnw/2017/div1.pdf` | - | [15110](https://solved.ac/problems/15110) | | **H** | Avoiding Airports | `pacnw/2017/AvoidingAirports` | `pacnw/2017/div1.pdf` | - | [15111](https://solved.ac/problems/15111) | | **I** | Long Long Strings | `pacnw/2017/LongLongStrings` | `pacnw/2017/div1.pdf` | - | [15112](https://solved.ac/problems/15112) | | **J** | Grid Coloring | `pacnw/2017/GridColoring` | `pacnw/2017/div1.pdf` | - | [15113](https://solved.ac/problems/15113) | | **K** | Spinning Up Palindromes | `pacnw/2017/SpinningUpPalindromes` | `pacnw/2017/div1.pdf` | - | [15114](https://solved.ac/problems/15114) | | **L** | Delayed Work | `pacnw/2017/DelayedWork` | `pacnw/2017/div1.pdf` | - | [15115](https://solved.ac/problems/15115) | | **M** | Unsatisfying | `pacnw/2017/Unsatisfying` | `pacnw/2017/div1.pdf` | - | [15116](https://solved.ac/problems/15116) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------- | :--------------------------------- | :--------------------- | :----: | :---------------------------------------: | | **N** | Odd Palindrome | `pacnw/2017/OddPalindrome` | `pacnw/2017/div2.pdf` | - | [15104](https://solved.ac/problems/15104) | | **O** | Latin Squares | `pacnw/2017/LatinSquares` | `pacnw/2017/div2.pdf` | - | [15117](https://solved.ac/problems/15117) | | **P** | Fear Factoring | `pacnw/2017/FearFactoring` | `pacnw/2017/div2.pdf` | - | [15106](https://solved.ac/problems/15106) | | **Q** | Halfway | `pacnw/2017/Halfway` | `pacnw/2017/div2.pdf` | - | [15118](https://solved.ac/problems/15118) | | **R** | Straight Shot | `pacnw/2017/StraightShot` | `pacnw/2017/div2.pdf` | - | [15108](https://solved.ac/problems/15108) | | **S** | Purple Rain | `pacnw/2017/PurpleRain` | `pacnw/2017/div2.pdf` | - | [15119](https://solved.ac/problems/15119) | | **T** | Security Badge | `pacnw/2017/SecurityBadge` | `pacnw/2017/div2.pdf` | - | [15110](https://solved.ac/problems/15110) | | **U** | Unloaded Die | `pacnw/2017/UnloadedDie` | `pacnw/2017/div2.pdf` | - | [15120](https://solved.ac/problems/15120) | | **V** | Long Long Strings | `pacnw/2017/LongLongStrings` | `pacnw/2017/div2.pdf` | - | [15112](https://solved.ac/problems/15112) | | **W** | Grid Coloring | `pacnw/2017/GridColoring` | `pacnw/2017/div2.pdf` | - | [15113](https://solved.ac/problems/15113) | | **X** | Star Arrangements | `pacnw/2017/StarArrangements` | `pacnw/2017/div2.pdf` | - | [15121](https://solved.ac/problems/15121) | | **Y** | Delayed Work | `pacnw/2017/DelayedWork` | `pacnw/2017/div2.pdf` | - | [15115](https://solved.ac/problems/15115) | | **Z** | Forbidden Zero | `pacnw/2017/ForbiddenZero` | `pacnw/2017/div2.pdf` | - | [15122](https://solved.ac/problems/15122) | --- ## Pacific Northwest Regional Contest (2018) - **Contest Slug:** `pacnw` - **Year:** 2018 - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/1976) | [Div 2](https://solved.ac/problems/archive/contest/1977) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------------------------------------------------------------------------- | :------------------------------ | :--------------------- | :----: | :---------------------------------------: | | **A** | Exam | `pacnw/2018/Exam` | `pacnw/2018/div1.pdf` | - | [16406](https://solved.ac/problems/16406) | | **B** | Coprime Integers | `pacnw/2018/CoprimeIntegers` | `pacnw/2018/div1.pdf` | - | [16409](https://solved.ac/problems/16409) | | **C** | Contest Setting | `pacnw/2018/ContestSetting` | `pacnw/2018/div1.pdf` | - | [16688](https://solved.ac/problems/16688) | | **D** | Count the Bits | `pacnw/2018/CountTheBits` | `pacnw/2018/div1.pdf` | - | [16417](https://solved.ac/problems/16417) | | **E** | Cops and Robbers | `pacnw/2018/CopsAndRobbers` | `pacnw/2018/div1.pdf` | - | [16407](https://solved.ac/problems/16407) | | **F** | Rectangles | `pacnw/2018/Rectangles` | `pacnw/2018/div1.pdf` | - | [16421](https://solved.ac/problems/16421) | | **G** | Goat on a Rope | `pacnw/2018/GoatRope` | `pacnw/2018/div1.pdf` | - | [16410](https://solved.ac/problems/16410) | | **H** | Repeating Goldbachs | `pacnw/2018/RepeatingGoldbachs` | `pacnw/2018/div1.pdf` | - | [16424](https://solved.ac/problems/16424) | | **I** | Inversions | `pacnw/2018/Inversions` | `pacnw/2018/div1.pdf` | - | [16418](https://solved.ac/problems/16418) | | **J** | A contest setter wants to determine the time limits for a given problem. There are n model | `pacnw/2018/TimeLimits` | `pacnw/2018/div1.pdf` | - | [16427](https://solved.ac/problems/16427) | | **K** | Knockout | `pacnw/2018/Knockout` | `pacnw/2018/div1.pdf` | - | [16419](https://solved.ac/problems/16419) | | **L** | Liars | `pacnw/2018/Liars` | `pacnw/2018/div1.pdf` | - | [16689](https://solved.ac/problems/16689) | | **M** | Mobilization | `pacnw/2018/Mobilization` | `pacnw/2018/div1.pdf` | - | [16414](https://solved.ac/problems/16414) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------------------------------------------------------------------------- | :------------------------------ | :--------------------- | :----: | :---------------------------------------: | | **N** | Exam | `pacnw/2018/Exam` | `pacnw/2018/div2.pdf` | - | [16406](https://solved.ac/problems/16406) | | **O** | Paper Cuts | `pacnw/2018/PaperCuts` | `pacnw/2018/div2.pdf` | - | [16690](https://solved.ac/problems/16690) | | **P** | Contest Setting | `pacnw/2018/ContestSetting` | `pacnw/2018/div2.pdf` | - | [16688](https://solved.ac/problems/16688) | | **Q** | Poker Hand | `pacnw/2018/PokerHand` | `pacnw/2018/div2.pdf` | - | [16408](https://solved.ac/problems/16408) | | **R** | House Numbers | `pacnw/2018/HouseNumbers` | `pacnw/2018/div2.pdf` | - | [16691](https://solved.ac/problems/16691) | | **S** | Greedy Scheduler | `pacnw/2018/GreedyScheduler` | `pacnw/2018/div2.pdf` | - | [16692](https://solved.ac/problems/16692) | | **T** | Goat on a Rope | `pacnw/2018/GoatRope` | `pacnw/2018/div2.pdf` | - | [16410](https://solved.ac/problems/16410) | | **U** | Repeating Goldbachs | `pacnw/2018/RepeatingGoldbachs` | `pacnw/2018/div2.pdf` | - | [16424](https://solved.ac/problems/16424) | | **V** | Random Index Vectors | `pacnw/2018/RandomIndexVectors` | `pacnw/2018/div2.pdf` | - | [16425](https://solved.ac/problems/16425) | | **W** | A contest setter wants to determine the time limits for a given problem. There are n model | `pacnw/2018/TimeLimits` | `pacnw/2018/div2.pdf` | - | [16427](https://solved.ac/problems/16427) | | **X** | Knockout | `pacnw/2018/Knockout` | `pacnw/2018/div2.pdf` | - | [16419](https://solved.ac/problems/16419) | | **Y** | Liars | `pacnw/2018/Liars` | `pacnw/2018/div2.pdf` | - | [16689](https://solved.ac/problems/16689) | | **Z** | Pizza Deal | `pacnw/2018/PizzaDeal` | `pacnw/2018/div2.pdf` | - | [16693](https://solved.ac/problems/16693) | --- ## Pacific Northwest Regional Contest (2019) - **Contest Slug:** `pacnw` - **Year:** 2019 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2019%20ICPC%20Pacific%20Northwest%20Regional%20Programming%20Contest) - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/2131) | [Div 2](https://solved.ac/problems/archive/contest/2132) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------- | :------------------------------------ | :--------------------- | :---------------------------------------------------: | :---------------------------------------: | | **A** | Radio Prize | `pacnw/2019/radioprize` | `pacnw/2019/div1.pdf` | - | [18152](https://solved.ac/problems/18152) | | **B** | Perfect Flush | `pacnw/2019/perfectflush` | `pacnw/2019/div1.pdf` | - | [18000](https://solved.ac/problems/18000) | | **C** | Coloring Contention | `pacnw/2019/coloringgraphedgesgame` | `pacnw/2019/div1.pdf` | - | [18153](https://solved.ac/problems/18153) | | **D** | Dividing by Two | `pacnw/2019/dividingbytwo` | `pacnw/2019/div1.pdf` | - | [18004](https://solved.ac/problems/18004) | | **E** | Rainbow Strings | `pacnw/2019/rainbowstrings` | `pacnw/2019/div1.pdf` | - | [18007](https://solved.ac/problems/18007) | | **F** | Carny Magician | `pacnw/2019/fixedpointpermutations` | `pacnw/2019/div1.pdf` | - | [17995](https://solved.ac/problems/17995) | | **G** | Glow, Little Pixel, Glow | `pacnw/2019/glowpixel` | `pacnw/2019/div1.pdf` | - | [18006](https://solved.ac/problems/18006) | | **H** | Pivoting Points | `pacnw/2019/windmillpivot` | `pacnw/2019/div1.pdf` | - | [18001](https://solved.ac/problems/18001) | | **I** | Error Correction | `pacnw/2019/errorcorrection` | `pacnw/2019/div1.pdf` | - | [17994](https://solved.ac/problems/17994) | | **J** | Interstellar Travel | `pacnw/2019/interstellartravel` | `pacnw/2019/div1.pdf` | - | [17996](https://solved.ac/problems/17996) | | **K** | Computer Cache | `pacnw/2019/computercache` | `pacnw/2019/div1.pdf` | - | [17992](https://solved.ac/problems/17992) | | **L** | Carry Cam Failure | `pacnw/2019/carrylesssquareroot` | `pacnw/2019/div1.pdf` | - | [17991](https://solved.ac/problems/17991) | | **M** | Maze Connect | `pacnw/2019/mazeconnect` | `pacnw/2019/div1.pdf` | - | [17999](https://solved.ac/problems/17999) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------- | :------------------------------------ | :--------------------- | :---------------------------------------------------: | :---------------------------------------: | | **N** | Checkerboard | `pacnw/2019/checkerboard` | `pacnw/2019/div2.pdf` | - | [18003](https://solved.ac/problems/18003) | | **O** | Even or Odd? | `pacnw/2019/evenorodd` | `pacnw/2019/div2.pdf` | - | [18005](https://solved.ac/problems/18005) | | **P** | Coloring Contention | `pacnw/2019/coloringgraphedgesgame` | `pacnw/2019/div2.pdf` | - | [18153](https://solved.ac/problems/18153) | | **Q** | Dividing by Two | `pacnw/2019/dividingbytwo` | `pacnw/2019/div2.pdf` | - | [18004](https://solved.ac/problems/18004) | | **R** | Rainbow Strings | `pacnw/2019/rainbowstrings` | `pacnw/2019/div2.pdf` | - | [18007](https://solved.ac/problems/18007) | | **S** | Speeding | `pacnw/2019/speeding` | `pacnw/2019/div2.pdf` | [speeding](https://open.kattis.com/problems/speeding) | [18154](https://solved.ac/problems/18154) | | **T** | Glow, Little Pixel, Glow | `pacnw/2019/glowpixel` | `pacnw/2019/div2.pdf` | - | [18006](https://solved.ac/problems/18006) | | **U** | Issuing Plates | `pacnw/2019/issuingplates` | `pacnw/2019/div2.pdf` | - | [18155](https://solved.ac/problems/18155) | | **V** | Correcting Keats | `pacnw/2019/levenshtein` | `pacnw/2019/div2.pdf` | - | [17998](https://solved.ac/problems/17998) | | **W** | Black and White | `pacnw/2019/blackandwhite` | `pacnw/2019/div2.pdf` | - | [18156](https://solved.ac/problems/18156) | | **X** | ReMorse | `pacnw/2019/morseredux` | `pacnw/2019/div2.pdf` | - | [18008](https://solved.ac/problems/18008) | | **Y** | Carry Cam Failure | `pacnw/2019/carrylesssquareroot` | `pacnw/2019/div2.pdf` | - | [17991](https://solved.ac/problems/17991) | | **Z** | Maze Connect | `pacnw/2019/mazeconnect` | `pacnw/2019/div2.pdf` | - | [17999](https://solved.ac/problems/17999) | --- ## Pacific Northwest Regional Contest (2020) - **Contest Slug:** `pacnw` - **Year:** 2020 - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/2460) | [Div 2](https://solved.ac/problems/archive/contest/2461) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :------------------------------------ | :-------------------------- | :----: | :---------------------------------------: | | **A** | No Thanks! | `pacnw/2020/nothanks` | `pacnw/2020/pacnw_div1.pdf` | - | [21177](https://solved.ac/problems/21177) | | **B** | Exam Manipulation | `pacnw/2020/exammanipulation` | `pacnw/2020/pacnw_div1.pdf` | - | [21139](https://solved.ac/problems/21139) | | **C** | Painted Corridors | `pacnw/2020/paintedcorridors` | `pacnw/2020/pacnw_div1.pdf` | - | [21175](https://solved.ac/problems/21175) | | **D** | Basic Basis | `pacnw/2020/basicbasis` | `pacnw/2020/pacnw_div1.pdf` | - | [21178](https://solved.ac/problems/21178) | | **E** | Bitonic Ordering | `pacnw/2020/bitonicordering` | `pacnw/2020/pacnw_div1.pdf` | - | [21136](https://solved.ac/problems/21136) | | **F** | Derangement Rotations | `pacnw/2020/derangementrotations` | `pacnw/2020/pacnw_div1.pdf` | - | [21179](https://solved.ac/problems/21179) | | **G** | Ant Typing | `pacnw/2020/anttyping` | `pacnw/2020/pacnw_div1.pdf` | - | [21134](https://solved.ac/problems/21134) | | **H** | Dominating Duos | `pacnw/2020/dominatingduos` | `pacnw/2020/pacnw_div1.pdf` | - | [21138](https://solved.ac/problems/21138) | | **I** | TripTik | `pacnw/2020/triptik` | `pacnw/2020/pacnw_div1.pdf` | - | [21148](https://solved.ac/problems/21148) | | **J** | Longest Common Subsequence | `pacnw/2020/longestcommonsubsequence` | `pacnw/2020/pacnw_div1.pdf` | - | [21142](https://solved.ac/problems/21142) | | **K** | Condorcet | `pacnw/2020/condorcet` | `pacnw/2020/pacnw_div1.pdf` | - | [21137](https://solved.ac/problems/21137) | | **L** | Kth Subtree | `pacnw/2020/kthsubtree` | `pacnw/2020/pacnw_div1.pdf` | - | [21141](https://solved.ac/problems/21141) | | **M** | Bad Packing | `pacnw/2020/badpacking` | `pacnw/2020/pacnw_div1.pdf` | - | [21135](https://solved.ac/problems/21135) | | **N** | Exciting Tournament | `pacnw/2020/excitingtournament` | `pacnw/2020/pacnw_div1.pdf` | - | [21140](https://solved.ac/problems/21140) | | **O** | Rainbow Numbers | `pacnw/2020/rainbownumbers` | `pacnw/2020/pacnw_div1.pdf` | - | [21145](https://solved.ac/problems/21145) | | **P** | Reconstruct Sum | `pacnw/2020/reconstructsum` | `pacnw/2020/pacnw_div1.pdf` | - | [21180](https://solved.ac/problems/21180) | | **Q** | Triangular Collection | `pacnw/2020/triangularcollection` | `pacnw/2020/pacnw_div1.pdf` | - | [21147](https://solved.ac/problems/21147) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :------------------------------------ | :-------------------------- | :----: | :---------------------------------------: | | **AA** | Longest Common Subsequence | `pacnw/2020/longestcommonsubsequence` | - | - | [21142](https://solved.ac/problems/21142) | | **AB** | Rating Problems | `pacnw/2020/ratingproblems` | - | - | [21146](https://solved.ac/problems/21146) | | **AC** | Magic Trick | `pacnw/2020/magictrick` | - | - | [21143](https://solved.ac/problems/21143) | | **AD** | Bad Packing | `pacnw/2020/badpacking` | - | - | [21135](https://solved.ac/problems/21135) | | **AE** | Kangaroo Party | `pacnw/2020/kangarooparty` | - | - | [21181](https://solved.ac/problems/21181) | | **AF** | Rainbow Numbers | `pacnw/2020/rainbownumbers` | - | - | [21145](https://solved.ac/problems/21145) | | **AG** | Reconstruct Sum | `pacnw/2020/reconstructsum` | - | - | [21180](https://solved.ac/problems/21180) | | **AH** | Triangular Collection | `pacnw/2020/triangularcollection` | - | - | [21147](https://solved.ac/problems/21147) | | **R** | No Thanks! | `pacnw/2020/nothanks` | - | - | [21177](https://solved.ac/problems/21177) | | **S** | Exam Manipulation | `pacnw/2020/exammanipulation` | - | - | [21139](https://solved.ac/problems/21139) | | **T** | Painted Corridors | `pacnw/2020/paintedcorridors` | - | - | [21175](https://solved.ac/problems/21175) | | **U** | Basic Basis | `pacnw/2020/basicbasis` | - | - | [21178](https://solved.ac/problems/21178) | | **V** | Bitonic Ordering | `pacnw/2020/bitonicordering` | - | - | [21136](https://solved.ac/problems/21136) | | **W** | Derangement Rotations | `pacnw/2020/derangementrotations` | - | - | [21179](https://solved.ac/problems/21179) | | **X** | Ant Typing | `pacnw/2020/anttyping` | - | - | [21134](https://solved.ac/problems/21134) | | **Y** | Dominating Duos | `pacnw/2020/dominatingduos` | - | - | [21138](https://solved.ac/problems/21138) | | **Z** | Missing Number | `pacnw/2020/missingnumber` | - | - | [21144](https://solved.ac/problems/21144) | --- ## Pacific Northwest Regional Contest (2021) - **Contest Slug:** `pacnw` - **Year:** 2021 - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/3038) | [Div 2](https://solved.ac/problems/archive/contest/3039) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------------- | :--------------------------------------- | :-------------------------- | :----: | :---------------------------------------: | | **A** | Circle Bounce | `pacnw/2021/circlebounce` | `pacnw/2021/pacnw_div1.pdf` | - | [24590](https://solved.ac/problems/24590) | | **B** | Shortest Missing Subsequences | `pacnw/2021/shortestmissingsubsequences` | `pacnw/2021/pacnw_div1.pdf` | - | [24591](https://solved.ac/problems/24591) | | **C** | XOR Island | `pacnw/2021/xorisland` | `pacnw/2021/pacnw_div1.pdf` | - | [24592](https://solved.ac/problems/24592) | | **D** | Archery Accuracy | `pacnw/2021/archeryaccuracy` | `pacnw/2021/pacnw_div1.pdf` | - | [24593](https://solved.ac/problems/24593) | | **E** | Construction | `pacnw/2021/problemsetconstruction` | `pacnw/2021/pacnw_div1.pdf` | - | [24594](https://solved.ac/problems/24594) | | **F** | Rise and Fall | `pacnw/2021/riseandfall` | `pacnw/2021/pacnw_div1.pdf` | - | [24595](https://solved.ac/problems/24595) | | **G** | Hopscotch 500 | `pacnw/2021/hopscotch500` | `pacnw/2021/pacnw_div1.pdf` | - | [24596](https://solved.ac/problems/24596) | | **H** | Reversibly Cyclic Strings | `pacnw/2021/reversiblecyclic` | `pacnw/2021/pacnw_div1.pdf` | - | [24597](https://solved.ac/problems/24597) | | **I** | Diagonals | `pacnw/2021/diagonals` | `pacnw/2021/pacnw_div1.pdf` | - | [24598](https://solved.ac/problems/24598) | | **J** | Fail Them All! | `pacnw/2021/failthemall` | `pacnw/2021/pacnw_div1.pdf` | - | [24599](https://solved.ac/problems/24599) | | **K** | Tournament Seeding | `pacnw/2021/tournamentseeding` | `pacnw/2021/pacnw_div1.pdf` | - | [24600](https://solved.ac/problems/24600) | | **L** | Dorm Room Divide | `pacnw/2021/dormroomdivide` | `pacnw/2021/pacnw_div1.pdf` | - | [24601](https://solved.ac/problems/24601) | | **M** | Tree Hopping | `pacnw/2021/treehopping` | `pacnw/2021/pacnw_div1.pdf` | - | [24602](https://solved.ac/problems/24602) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------------- | :--------------------------------------- | :-------------------------- | :----: | :---------------------------------------: | | **N** | Scaling Recipe | `pacnw/2021/scalingrecipe` | - | - | [24603](https://solved.ac/problems/24603) | | **O** | Shortest Missing Subsequences | `pacnw/2021/shortestmissingsubsequences` | - | - | [24591](https://solved.ac/problems/24591) | | **P** | Black and White | `pacnw/2021/blackandwhite` | - | - | [24604](https://solved.ac/problems/24604) | | **Q** | Tetris Generation | `pacnw/2021/tetrisgeneration` | - | - | [24605](https://solved.ac/problems/24605) | | **R** | Double Password | `pacnw/2021/doublepassword` | - | - | [24606](https://solved.ac/problems/24606) | | **S** | Rise and Fall | `pacnw/2021/riseandfall` | - | - | [24595](https://solved.ac/problems/24595) | | **T** | Square Bounce | `pacnw/2021/squarebounce` | - | - | [24607](https://solved.ac/problems/24607) | | **U** | Reversibly Cyclic Strings | `pacnw/2021/reversiblecyclic` | - | - | [24597](https://solved.ac/problems/24597) | | **V** | Diagonals | `pacnw/2021/diagonals` | - | - | [24598](https://solved.ac/problems/24598) | | **W** | Fail Them All! | `pacnw/2021/failthemall` | - | - | [24599](https://solved.ac/problems/24599) | | **X** | Tournament Seeding | `pacnw/2021/tournamentseeding` | - | - | [24600](https://solved.ac/problems/24600) | | **Y** | Dorm Room Divide | `pacnw/2021/dormroomdivide` | - | - | [24601](https://solved.ac/problems/24601) | | **Z** | Tree Hopping | `pacnw/2021/treehopping` | - | - | [24602](https://solved.ac/problems/24602) | --- ## Pacific Northwest Regional Contest (2022) - **Contest Slug:** `pacnw` - **Year:** 2022 - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/3514) | [Div 2](https://solved.ac/problems/archive/contest/3515) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :------------------------------------ | :-------------------------- | :----: | :---------------------------------------: | | **A** | Three Dice | `pacnw/2022/threedice` | `pacnw/2022/pacnw_div1.pdf` | - | [27591](https://solved.ac/problems/27591) | | **B** | Alchemy | `pacnw/2022/alchemy` | `pacnw/2022/pacnw_div1.pdf` | - | [27565](https://solved.ac/problems/27565) | | **C** | Champernowne Count | `pacnw/2022/champernownecount` | `pacnw/2022/pacnw_div1.pdf` | - | [27569](https://solved.ac/problems/27569) | | **D** | Triangle Containment | `pacnw/2022/trianglecontainment` | `pacnw/2022/pacnw_div1.pdf` | - | [27592](https://solved.ac/problems/27592) | | **E** | Color Tubes | `pacnw/2022/colortubes` | `pacnw/2022/pacnw_div1.pdf` | - | [27571](https://solved.ac/problems/27571) | | **F** | Food Processor | `pacnw/2022/foodprocessor` | `pacnw/2022/pacnw_div1.pdf` | - | [27581](https://solved.ac/problems/27581) | | **G** | Digits of Unity | `pacnw/2022/digitsofunity` | `pacnw/2022/pacnw_div1.pdf` | - | [27574](https://solved.ac/problems/27574) | | **H** | Branch Manager | `pacnw/2022/branchmanager` | `pacnw/2022/pacnw_div1.pdf` | - | [27568](https://solved.ac/problems/27568) | | **I** | Counting Satellites | `pacnw/2022/countingsatellites` | `pacnw/2022/pacnw_div1.pdf` | - | [27572](https://solved.ac/problems/27572) | | **J** | Sun and Moon | `pacnw/2022/sunandmoon` | `pacnw/2022/pacnw_div1.pdf` | - | [27590](https://solved.ac/problems/27590) | | **K** | Advertising ICPC | `pacnw/2022/advertisingicpc` | `pacnw/2022/pacnw_div1.pdf` | - | [27564](https://solved.ac/problems/27564) | | **L** | Exponent Exchange | `pacnw/2022/exponentexchange` | `pacnw/2022/pacnw_div1.pdf` | - | [27578](https://solved.ac/problems/27578) | | **M** | Lone Knight | `pacnw/2022/loneknight` | `pacnw/2022/pacnw_div1.pdf` | - | [27585](https://solved.ac/problems/27585) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :------------------------------------ | :-------------------------- | :----: | :---------------------------------------: | | **A** | Three Dice | `pacnw/2022/threedice` | `pacnw/2022/pacnwdiv2.pdf` | - | [27591](https://solved.ac/problems/27591) | | **B** | Alchemy | `pacnw/2022/alchemy` | `pacnw/2022/pacnwdiv2.pdf` | - | [27565](https://solved.ac/problems/27565) | | **C** | Champernowne Count | `pacnw/2022/champernownecount` | `pacnw/2022/pacnwdiv2.pdf` | - | [27569](https://solved.ac/problems/27569) | | **D** | Hunt the Wumpus | `pacnw/2022/huntthewumpus` | `pacnw/2022/pacnwdiv2.pdf` | - | [27583](https://solved.ac/problems/27583) | | **E** | Color Tubes | `pacnw/2022/colortubes` | `pacnw/2022/pacnwdiv2.pdf` | - | [27571](https://solved.ac/problems/27571) | | **F** | Food Processor | `pacnw/2022/foodprocessor` | `pacnw/2022/pacnwdiv2.pdf` | - | [27581](https://solved.ac/problems/27581) | | **G** | Fading Wind | `pacnw/2022/fadingwind` | `pacnw/2022/pacnwdiv2.pdf` | - | [27579](https://solved.ac/problems/27579) | | **H** | Creative Accounting | `pacnw/2022/creativeaccounting` | `pacnw/2022/pacnwdiv2.pdf` | - | [27573](https://solved.ac/problems/27573) | | **I** | I Could Have Won | `pacnw/2022/icouldhavewon` | `pacnw/2022/pacnwdiv2.pdf` | - | [27584](https://solved.ac/problems/27584) | | **J** | Sun and Moon | `pacnw/2022/sunandmoon` | `pacnw/2022/pacnwdiv2.pdf` | - | [27590](https://solved.ac/problems/27590) | | **K** | Chocolate Chip Fabrication | `pacnw/2022/chocolatechipfabrication` | `pacnw/2022/pacnwdiv2.pdf` | - | [27570](https://solved.ac/problems/27570) | | **L** | Distinct Parity Excess | `pacnw/2022/distinctparityexcess` | `pacnw/2022/pacnwdiv2.pdf` | - | [27575](https://solved.ac/problems/27575) | | **M** | Restaurant Opening | `pacnw/2022/restaurantopening` | `pacnw/2022/pacnwdiv2.pdf` | - | [27588](https://solved.ac/problems/27588) | --- ## Pacific Northwest Regional Contest (2023) - **Contest Slug:** `pacnw` - **Year:** 2023 - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/4156) | [Div 2](https://solved.ac/problems/archive/contest/4157) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------ | :----------------------------------------- | :------------------------------- | :----: | :---------------------------------------: | | **A** | ABC String | `pacnw/2023/abcstring` | `pacnw/2023/problems-D1_all.pdf` | - | [31506](https://solved.ac/problems/31506) | | **B** | Acceptable Seating Arrangements | `pacnw/2023/acceptableseatingarrangements` | `pacnw/2023/problems-D1_all.pdf` | - | [31507](https://solved.ac/problems/31507) | | **C** | Candy Factory | `pacnw/2023/candyfactory` | `pacnw/2023/problems-D1_all.pdf` | - | [31508](https://solved.ac/problems/31508) | | **D** | Cramming for Finals | `pacnw/2023/crammingforfinals` | `pacnw/2023/problems-D1_all.pdf` | - | [31509](https://solved.ac/problems/31509) | | **E** | Eccentric Excursion | `pacnw/2023/eccentricexcursion` | `pacnw/2023/problems-D1_all.pdf` | - | [31510](https://solved.ac/problems/31510) | | **F** | Item Selection | `pacnw/2023/itemselection` | `pacnw/2023/problems-D1_all.pdf` | - | [31511](https://solved.ac/problems/31511) | | **G** | Matrix Fraud | `pacnw/2023/matrixfraud` | `pacnw/2023/problems-D1_all.pdf` | - | [31512](https://solved.ac/problems/31512) | | **H** | On-Call Team | `pacnw/2023/oncallteam` | `pacnw/2023/problems-D1_all.pdf` | - | [31513](https://solved.ac/problems/31513) | | **I** | Range Editing | `pacnw/2023/rangeediting` | `pacnw/2023/problems-D1_all.pdf` | - | [31514](https://solved.ac/problems/31514) | | **J** | Segment Drawing | `pacnw/2023/segmentdrawing` | `pacnw/2023/problems-D1_all.pdf` | - | [31515](https://solved.ac/problems/31515) | | **K** | Sequence Guessing | `pacnw/2023/sequenceguessing` | `pacnw/2023/problems-D1_all.pdf` | - | [31516](https://solved.ac/problems/31516) | | **L** | Training | `pacnw/2023/training` | `pacnw/2023/problems-D1_all.pdf` | - | [31517](https://solved.ac/problems/31517) | | **M** | Triple Sevens | `pacnw/2023/triplesevens` | `pacnw/2023/problems-D1_all.pdf` | - | [31518](https://solved.ac/problems/31518) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------ | :----------------------------------------- | :------------------------------- | :----: | :---------------------------------------: | | **A** | A Cappella Recording | `pacnw/2023/acappellarecording` | `pacnw/2023/problems-D2_all.pdf` | - | [31519](https://solved.ac/problems/31519) | | **B** | Champernowne Verification | `pacnw/2023/champernowneverification` | `pacnw/2023/problems-D2_all.pdf` | - | [31520](https://solved.ac/problems/31520) | | **C** | Four Die Rolls | `pacnw/2023/fourdierolls` | `pacnw/2023/problems-D2_all.pdf` | - | [31521](https://solved.ac/problems/31521) | | **D** | Ordered Problem Set | `pacnw/2023/orderedproblemset` | `pacnw/2023/problems-D2_all.pdf` | - | [31522](https://solved.ac/problems/31522) | | **E** | Training | `pacnw/2023/training` | `pacnw/2023/problems-D2_all.pdf` | - | [31517](https://solved.ac/problems/31517) | | **F** | Triple Sevens | `pacnw/2023/triplesevens` | `pacnw/2023/problems-D2_all.pdf` | - | [31518](https://solved.ac/problems/31518) | | **G** | ABC String | `pacnw/2023/abcstring` | `pacnw/2023/problems-D2_all.pdf` | - | [31506](https://solved.ac/problems/31506) | | **H** | Acceptable Seating Arrangements | `pacnw/2023/acceptableseatingarrangements` | `pacnw/2023/problems-D2_all.pdf` | - | [31507](https://solved.ac/problems/31507) | | **I** | Balanced Tree Path | `pacnw/2023/balancedtreepath` | `pacnw/2023/problems-D2_all.pdf` | - | [31523](https://solved.ac/problems/31523) | | **J** | Candy Factory | `pacnw/2023/candyfactory` | `pacnw/2023/problems-D2_all.pdf` | - | [31508](https://solved.ac/problems/31508) | | **K** | Item Selection | `pacnw/2023/itemselection` | `pacnw/2023/problems-D2_all.pdf` | - | [31511](https://solved.ac/problems/31511) | | **L** | Magic Cube | `pacnw/2023/magiccube` | `pacnw/2023/problems-D2_all.pdf` | - | [31524](https://solved.ac/problems/31524) | | **M** | Sequence Guessing | `pacnw/2023/sequenceguessing` | `pacnw/2023/problems-D2_all.pdf` | - | [31516](https://solved.ac/problems/31516) | --- ## Rocky Mountain Regional Contest (2003) - **Contest Slug:** `rmrc` - **Year:** 2003 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/190) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------- | :------------------ | :--------------------------------- | :----: | :-------------------------------------: | | **A** | SPIN | `rmrc/2003/spin` | `rmrc/2003/spin/statement.pdf` | - | [4872](https://solved.ac/problems/4872) | | **B** | SHAKE | `rmrc/2003/shake` | `rmrc/2003/shake/statement.pdf` | - | [4873](https://solved.ac/problems/4873) | | **C** | TOYS | `rmrc/2003/toys` | `rmrc/2003/toys/statement.pdf` | - | [4874](https://solved.ac/problems/4874) | | **D** | COMPRESS | `rmrc/2003/compress` | `rmrc/2003/compress/statement.pdf` | - | [4875](https://solved.ac/problems/4875) | | **E** | SHEET | `rmrc/2003/sheet` | `rmrc/2003/sheet/statement.pdf` | - | [4876](https://solved.ac/problems/4876) | | **F** | GYM | `rmrc/2003/gym` | `rmrc/2003/gym/statement.pdf` | - | [4877](https://solved.ac/problems/4877) | | **G** | PLANKS | `rmrc/2003/planks` | `rmrc/2003/planks/statement.pdf` | - | [4878](https://solved.ac/problems/4878) | | **H** | PERMS | `rmrc/2003/perms` | `rmrc/2003/perms/statement.pdf` | - | [4879](https://solved.ac/problems/4879) | --- ## Rocky Mountain Regional Contest (2004) - **Contest Slug:** `rmrc` - **Year:** 2004 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/189) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------- | :-------------------- | :---------------------------------- | :----: | :-------------------------------------: | | **A** | Gold Coins | `rmrc/2004/coins` | `rmrc/2004/coins/coins.pdf` | - | [4864](https://solved.ac/problems/4864) | | **B** | Shortest Prefixes | `rmrc/2004/prefix` | `rmrc/2004/prefix/prefix.pdf` | - | [4865](https://solved.ac/problems/4865) | | **C** | Squares | `rmrc/2004/squares` | `rmrc/2004/squares/squares.pdf` | - | [4866](https://solved.ac/problems/4866) | | **D** | Hire and Fire | `rmrc/2004/hirefire` | `rmrc/2004/hirefire/hirefire.pdf` | - | [4867](https://solved.ac/problems/4867) | | **E** | Mix and Build | `rmrc/2004/mixbuild` | `rmrc/2004/mixbuild/mixbuild.pdf` | - | [4868](https://solved.ac/problems/4868) | | **F** | Blackjack | `rmrc/2004/blackjack` | `rmrc/2004/blackjack/blackjack.pdf` | - | [4869](https://solved.ac/problems/4869) | | **G** | Litmus Test | `rmrc/2004/litmus` | `rmrc/2004/litmus/litmus.pdf` | - | [4870](https://solved.ac/problems/4870) | | **H** | Scrambled Polygon | `rmrc/2004/polygon` | `rmrc/2004/polygon/polygon.pdf` | - | [4871](https://solved.ac/problems/4871) | --- ## Rocky Mountain Regional Contest (2005) - **Contest Slug:** `rmrc` - **Year:** 2005 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/188) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------ | :--------------------- | :------------------------------------ | :----: | :-------------------------------------: | | **A** | Tire Dimensions | `rmrc/2005/tire` | `rmrc/2005/tire/tire.pdf` | - | [4855](https://solved.ac/problems/4855) | | **B** | Random Walk | `rmrc/2005/randomwalk` | `rmrc/2005/randomwalk/randomwalk.pdf` | - | [4856](https://solved.ac/problems/4856) | | **C** | Paint Mix | `rmrc/2005/paint` | `rmrc/2005/paint/paint.pdf` | - | [4857](https://solved.ac/problems/4857) | | **D** | Open and Close | `rmrc/2005/openclose` | `rmrc/2005/openclose/openclose.pdf` | - | [4858](https://solved.ac/problems/4858) | | **E** | Hour Glass | `rmrc/2005/hourglass` | `rmrc/2005/hourglass/hourglass.pdf` | - | [4859](https://solved.ac/problems/4859) | | **F** | Smallest Difference | `rmrc/2005/mindiff` | `rmrc/2005/mindiff/mindiff.pdf` | - | [4860](https://solved.ac/problems/4860) | | **G** | Faulty Odometer | `rmrc/2005/odometer` | `rmrc/2005/odometer/odometer.pdf` | - | [4861](https://solved.ac/problems/4861) | | **H** | Last Digits | `rmrc/2005/digits` | `rmrc/2005/digits/digits.pdf` | - | [4862](https://solved.ac/problems/4862) | | **I** | Suit Distribution | `rmrc/2005/suit` | `rmrc/2005/suit/suit.pdf` | - | [4863](https://solved.ac/problems/4863) | | **P** | Count | `rmrc/2005/count` | `rmrc/2005/count/count.pdf` | - | - | | **Q** | Server | `rmrc/2005/server` | `rmrc/2005/server/server.pdf` | - | - | | **R** | Vending Machine | `rmrc/2005/vending` | `rmrc/2005/vending/vending.pdf` | - | - | --- ## Rocky Mountain Regional Contest (2006) - **Contest Slug:** `rmrc` - **Year:** 2006 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/187) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------- | :---------------------- | :-------------------------------------- | :----: | :-------------------------------------: | | **A** | Bridge Bidding | `rmrc/2006/bidding` | `rmrc/2006/bidding/bidding.pdf` | - | [4849](https://solved.ac/problems/4849) | | **B** | Baskets of Gold Coins | `rmrc/2006/coins` | `rmrc/2006/coins/coins.pdf` | - | [4850](https://solved.ac/problems/4850) | | **C** | Toothpick Arithmetic | `rmrc/2006/toothpicks` | `rmrc/2006/toothpicks/toothpicks.pdf` | - | [4851](https://solved.ac/problems/4851) | | **D** | Human Knot | `rmrc/2006/humanknot` | `rmrc/2006/humanknot/humanknot.pdf` | - | [1847](https://solved.ac/problems/1847) | | **E** | Permutation Recovery | `rmrc/2006/permutation` | `rmrc/2006/permutation/permutation.pdf` | - | [1849](https://solved.ac/problems/1849) | | **F** | Marbles in Three Baskets | `rmrc/2006/marbles` | `rmrc/2006/marbles/marbles.pdf` | - | [4745](https://solved.ac/problems/4745) | | **G** | Doors and Penguins | `rmrc/2006/doors` | `rmrc/2006/doors/doors.pdf` | - | [4743](https://solved.ac/problems/4743) | | **H** | Knots | `rmrc/2006/knots` | `rmrc/2006/knots/knots.pdf` | - | [4853](https://solved.ac/problems/4853) | | **I** | String Equations | `rmrc/2006/stringeq` | `rmrc/2006/stringeq/stringeq.pdf` | - | [4854](https://solved.ac/problems/4854) | | **P** | Count | `rmrc/2006/count` | `rmrc/2006/count/count.pdf` | - | - | | **Q** | GPA | `rmrc/2006/gpa` | `rmrc/2006/gpa/gpa.pdf` | - | - | | **R** | Savings Account | `rmrc/2006/account` | `rmrc/2006/account/account.pdf` | - | - | --- ## Rocky Mountain Regional Contest (2007) - **Contest Slug:** `rmrc` - **Year:** 2007 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/186) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------- | :--------------------- | :------------------------------------ | :----: | :-------------------------------------: | | **A** | Tree Grafting | `rmrc/2007/graft` | `rmrc/2007/graft/graft.pdf` | - | [4840](https://solved.ac/problems/4840) | | **B** | Look and Say | `rmrc/2007/lookandsay` | `rmrc/2007/lookandsay/lookandsay.pdf` | - | [4841](https://solved.ac/problems/4841) | | **C** | Server Relocation | `rmrc/2007/server` | `rmrc/2007/server/server.pdf` | - | [4842](https://solved.ac/problems/4842) | | **D** | Coin Toss | `rmrc/2007/cointoss` | `rmrc/2007/cointoss/cointoss.pdf` | - | [4843](https://solved.ac/problems/4843) | | **E** | Vacation Rentals | `rmrc/2007/vacation` | `rmrc/2007/vacation/vacation.pdf` | - | [4844](https://solved.ac/problems/4844) | | **F** | Baseball | `rmrc/2007/baseball` | `rmrc/2007/baseball/baseball.pdf` | - | [4845](https://solved.ac/problems/4845) | | **G** | Team Work | `rmrc/2007/teamwork` | `rmrc/2007/teamwork/teamwork.pdf` | - | [4846](https://solved.ac/problems/4846) | | **H** | Wavelet Compression | `rmrc/2007/wavelet` | `rmrc/2007/wavelet/wavelet.pdf` | - | [4847](https://solved.ac/problems/4847) | | **I** | Elementary Additions | `rmrc/2007/addition` | `rmrc/2007/addition/addition.pdf` | - | [4848](https://solved.ac/problems/4848) | | **P** | Count | `rmrc/2007/count` | `rmrc/2007/count/count.pdf` | - | - | | **Q** | GPA | `rmrc/2007/gpa` | `rmrc/2007/gpa/gpa.pdf` | - | - | | **R** | Savings Account | `rmrc/2007/account` | `rmrc/2007/account/account.pdf` | - | - | --- ## Rocky Mountain Regional Contest (2008) - **Contest Slug:** `rmrc` - **Year:** 2008 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/185) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------ | :--------------------- | :------------------------------------ | :----: | :-------------------------------------: | | **A** | Combination Lock | `rmrc/2008/lock` | `rmrc/2008/lock/lock.pdf` | - | [4117](https://solved.ac/problems/4117) | | **B** | Lawrence of Arabia | `rmrc/2008/lawrence` | `rmrc/2008/lawrence/lawrence.pdf` | - | [4115](https://solved.ac/problems/4115) | | **C** | Close Enough Computations | `rmrc/2008/close` | `rmrc/2008/close/close.pdf` | - | [4727](https://solved.ac/problems/4727) | | **D** | Walk in the Park | `rmrc/2008/park` | `rmrc/2008/park/park.pdf` | - | [4835](https://solved.ac/problems/4835) | | **E** | Dance | `rmrc/2008/dance` | `rmrc/2008/dance/dance.pdf` | - | [4836](https://solved.ac/problems/4836) | | **F** | Trucking | `rmrc/2008/trucking` | `rmrc/2008/trucking/trucking.pdf` | - | [4837](https://solved.ac/problems/4837) | | **G** | When | `rmrc/2008/when` | `rmrc/2008/when/when.pdf` | - | [4838](https://solved.ac/problems/4838) | | **H** | Prime Bases | `rmrc/2008/primebases` | `rmrc/2008/primebases/primebases.pdf` | - | [4839](https://solved.ac/problems/4839) | | **P** | Count | `rmrc/2008/count` | `rmrc/2008/count/count.pdf` | - | - | | **Q** | GPA | `rmrc/2008/gpa` | `rmrc/2008/gpa/gpa.pdf` | - | - | | **R** | Savings Account | `rmrc/2008/account` | `rmrc/2008/account/account.pdf` | - | [4998](https://solved.ac/problems/4998) | --- ## Rocky Mountain Regional Contest (2009) - **Contest Slug:** `rmrc` - **Year:** 2009 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/184) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------- | :---------------------- | :-------------------------------------- | :----: | :-------------------------------------: | | **A** | Range | `rmrc/2009/range` | `rmrc/2009/range/range.pdf` | - | [4826](https://solved.ac/problems/4826) | | **B** | Coverage | `rmrc/2009/coverage` | `rmrc/2009/coverage/coverage.pdf` | - | [4827](https://solved.ac/problems/4827) | | **C** | XML | `rmrc/2009/xml` | `rmrc/2009/xml/xml.pdf` | - | [4828](https://solved.ac/problems/4828) | | **D** | Clickomania | `rmrc/2009/clickomania` | `rmrc/2009/clickomania/clickomania.pdf` | - | [4829](https://solved.ac/problems/4829) | | **E** | Balance | `rmrc/2009/balance` | `rmrc/2009/balance/balance.pdf` | - | [4830](https://solved.ac/problems/4830) | | **F** | Resistors | `rmrc/2009/resistors` | `rmrc/2009/resistors/resistors.pdf` | - | [4831](https://solved.ac/problems/4831) | | **G** | Shuffling | `rmrc/2009/shuffling` | `rmrc/2009/shuffling/shuffling.pdf` | - | [4832](https://solved.ac/problems/4832) | | **H** | Papa | `rmrc/2009/papa` | `rmrc/2009/papa/papa.pdf` | - | [4833](https://solved.ac/problems/4833) | | **I** | Wax | `rmrc/2009/wax` | `rmrc/2009/wax/wax.pdf` | - | [4834](https://solved.ac/problems/4834) | | **P** | Count | `rmrc/2009/count` | `rmrc/2009/count/count.pdf` | - | - | | **Q** | Health | `rmrc/2009/health` | `rmrc/2009/health/health.pdf` | - | - | | **R** | Combination Lock | `rmrc/2009/lock` | `rmrc/2009/lock/lock.pdf` | - | - | --- ## Rocky Mountain Regional Contest (2010) - **Contest Slug:** `rmrc` - **Year:** 2010 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/183) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------- | :---------------------- | :-------------------------------------- | :----: | :-------------------------------------: | | **A** | Parenthesis | `rmrc/2010/parenthesis` | `rmrc/2010/parenthesis/parenthesis.pdf` | - | [4817](https://solved.ac/problems/4817) | | **B** | Ropes | `rmrc/2010/ropes` | `rmrc/2010/ropes/ropes.pdf` | - | [4818](https://solved.ac/problems/4818) | | **C** | Chain Code | `rmrc/2010/chaincode` | `rmrc/2010/chaincode/chaincode.pdf` | - | [4819](https://solved.ac/problems/4819) | | **D** | Task | `rmrc/2010/task` | `rmrc/2010/task/task.pdf` | - | [4820](https://solved.ac/problems/4820) | | **F** | Soccer | `rmrc/2010/soccer` | `rmrc/2010/soccer/soccer.pdf` | - | [4822](https://solved.ac/problems/4822) | | **G** | Railroad | `rmrc/2010/railroad` | `rmrc/2010/railroad/railroad.pdf` | - | [4823](https://solved.ac/problems/4823) | | **H** | Post Office | `rmrc/2010/postoffice` | `rmrc/2010/postoffice/postoffice.pdf` | - | [4824](https://solved.ac/problems/4824) | | **I** | Aronson | `rmrc/2010/aronson` | `rmrc/2010/aronson/aronson.pdf` | - | [4825](https://solved.ac/problems/4825) | | **P** | Count | `rmrc/2010/count` | `rmrc/2010/count/count.pdf` | - | - | | **Q** | Spinids | `rmrc/2010/spinids` | `rmrc/2010/spinids/spinids.pdf` | - | - | | **R** | Treasure | `rmrc/2010/treasure` | `rmrc/2010/treasure/treasure.pdf` | - | - | --- ## Rocky Mountain Regional Contest (2011) - **Contest Slug:** `rmrc` - **Year:** 2011 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/182) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------- | :---------------------- | :-------------------------------------- | :----: | :-------------------------------------: | | **A** | Iterated Difference | `rmrc/2011/diff` | `rmrc/2011/diff/diff.pdf` | - | [4807](https://solved.ac/problems/4807) | | **B** | Shape Number | `rmrc/2011/shapenumber` | `rmrc/2011/shapenumber/shapenumber.pdf` | - | [4808](https://solved.ac/problems/4808) | | **C** | Stock Prices | `rmrc/2011/stock` | `rmrc/2011/stock/stock.pdf` | - | [4809](https://solved.ac/problems/4809) | | **D** | Contour Tracing | `rmrc/2011/contour` | `rmrc/2011/contour/contour.pdf` | - | [4810](https://solved.ac/problems/4810) | | **E** | Pills | `rmrc/2011/pills` | `rmrc/2011/pills/pills.pdf` | - | [4811](https://solved.ac/problems/4811) | | **F** | Robot Navigation | `rmrc/2011/robot` | `rmrc/2011/robot/robot.pdf` | - | [4812](https://solved.ac/problems/4812) | | **G** | User Names | `rmrc/2011/username` | `rmrc/2011/username/username.pdf` | - | [4813](https://solved.ac/problems/4813) | | **H** | Citizenship Application | `rmrc/2011/citi` | `rmrc/2011/citi/citi.pdf` | - | [4814](https://solved.ac/problems/4814) | | **I** | Wealthy Family | `rmrc/2011/family` | `rmrc/2011/family/family.pdf` | - | [4815](https://solved.ac/problems/4815) | | **J** | Supply Mission | `rmrc/2011/supply` | `rmrc/2011/supply/supply.pdf` | - | [4816](https://solved.ac/problems/4816) | | **P** | Count | `rmrc/2011/count` | `rmrc/2011/count/count.pdf` | - | - | | **Q** | G.P.A. | `rmrc/2011/gpa` | `rmrc/2011/gpa/gpa.pdf` | - | - | | **R** | Vending Machine | `rmrc/2011/vending` | `rmrc/2011/vending/vending.pdf` | - | - | --- ## Rocky Mountain Regional Contest (2012) - **Contest Slug:** `rmrc` - **Year:** 2012 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1126) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :-------------------- | :---------------------------------- | :----: | :-------------------------------------: | | **A** | Happy Camper | `rmrc/2012/camper` | `rmrc/2012/camper/camper.pdf` | - | [1871](https://solved.ac/problems/1871) | | **B** | Chemistry | `rmrc/2012/chemistry` | `rmrc/2012/chemistry/chemistry.pdf` | - | [1876](https://solved.ac/problems/1876) | | **C** | Dirichlet's Theorem | `rmrc/2012/dirichlet` | `rmrc/2012/dirichlet/dirichlet.pdf` | - | [1893](https://solved.ac/problems/1893) | | **D** | Fuel Stops | `rmrc/2012/fuel` | `rmrc/2012/fuel/fuel.pdf` | - | [1896](https://solved.ac/problems/1896) | | **E** | Approximate Sorting | `rmrc/2012/sorting` | `rmrc/2012/sorting/sorting.pdf` | - | [1901](https://solved.ac/problems/1901) | | **F** | Nine | `rmrc/2012/nine` | `rmrc/2012/nine/nine.pdf` | - | [1559](https://solved.ac/problems/1559) | | **G** | Function Overloading | `rmrc/2012/overload` | `rmrc/2012/overload/overload.pdf` | - | [1680](https://solved.ac/problems/1680) | | **H** | Trees | `rmrc/2012/trees` | `rmrc/2012/trees/trees.pdf` | - | [1807](https://solved.ac/problems/1807) | | **I** | Catching Shade in Flatland | `rmrc/2012/shade` | `rmrc/2012/shade/shade.pdf` | - | - | | **J** | Emergency Room | `rmrc/2012/emergency` | `rmrc/2012/emergency/emergency.pdf` | - | - | | **P** | Count | `rmrc/2012/count` | `rmrc/2012/count/count.pdf` | - | - | | **Q** | Pills | `rmrc/2012/pills` | `rmrc/2012/pills/pills.pdf` | - | - | | **R** | User Names | `rmrc/2012/username` | `rmrc/2012/username/username.pdf` | - | - | --- ## Rocky Mountain Regional Contest (2013) - **Contest Slug:** `rmrc` - **Year:** 2013 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Contest%20%28RMRC%29%202013) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1156) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------------------ | :--------------------- | :------------------------------------ | :--------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Fast Food Prizes | `rmrc/2013/fastfood` | `rmrc/2013/fastfood/fastfood.pdf` | [fastfood](https://open.kattis.com/problems/fastfood) | [9329](https://solved.ac/problems/9329) | | **B** | Seven Kingdoms | `rmrc/2013/kingdom` | `rmrc/2013/kingdom/kingdom.pdf` | [sevenkingdoms](https://open.kattis.com/problems/sevenkingdoms) | [9330](https://solved.ac/problems/9330) | | **C** | Institute of Advanced Category Manipulation | `rmrc/2013/acm` | `rmrc/2013/acm/acm.pdf` | [categorymanipulation](https://open.kattis.com/problems/categorymanipulation) | [9331](https://solved.ac/problems/9331) | | **D** | Digital Content Protection | `rmrc/2013/content` | `rmrc/2013/content/content.pdf` | [contentprotection](https://open.kattis.com/problems/contentprotection) | [9332](https://solved.ac/problems/9332) | | **E** | Credit Card Payment | `rmrc/2013/creditcard` | `rmrc/2013/creditcard/creditcard.pdf` | [creditcard](https://open.kattis.com/problems/creditcard) | [9333](https://solved.ac/problems/9333) | | **F** | IQ Test | `rmrc/2013/iq` | `rmrc/2013/iq/iq.pdf` | [iqtest](https://open.kattis.com/problems/iqtest) | [9334](https://solved.ac/problems/9334) | | **G** | Social Advertising | `rmrc/2013/social` | `rmrc/2013/social/social.pdf` | [socialadvertising](https://open.kattis.com/problems/socialadvertising) | [9335](https://solved.ac/problems/9335) | | **H** | Tables | `rmrc/2013/tables` | `rmrc/2013/tables/tables.pdf` | - | [9336](https://solved.ac/problems/9336) | | **I** | Flood-It | `rmrc/2013/floodit` | `rmrc/2013/floodit/floodit.pdf` | [floodit](https://open.kattis.com/problems/floodit) | [9337](https://solved.ac/problems/9337) | | **J** | Chemicals Monitoring | `rmrc/2013/chemicals` | `rmrc/2013/chemicals/chemicals.pdf` | [chemicalsmonitoring](https://open.kattis.com/problems/chemicalsmonitoring) | [9338](https://solved.ac/problems/9338) | | **P** | Count | `rmrc/2013/count` | `rmrc/2013/count/count.pdf` | - | - | | **Q** | Camper | `rmrc/2013/camper` | `rmrc/2013/camper/camper.pdf` | - | - | --- ## Rocky Mountain Regional Contest (2014) - **Contest Slug:** `rmrc` - **Year:** 2014 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Contest%20%28RMRC%29%202014) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1298) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :---------------------- | :----------------------- | :---------------------------------------------------------------: | :---------------------------------------: | | **A** | Server | `rmrc/2014/server` | `rmrc/2014/problems.pdf` | [server](https://open.kattis.com/problems/server) | [10409](https://solved.ac/problems/10409) | | **B** | Eligibility | `rmrc/2014/eligibility` | `rmrc/2014/problems.pdf` | [eligibility](https://open.kattis.com/problems/eligibility) | [10410](https://solved.ac/problems/10410) | | **C** | Plane Ticket Pricing | `rmrc/2014/seats` | `rmrc/2014/problems.pdf` | [ticketpricing](https://open.kattis.com/problems/ticketpricing) | [10411](https://solved.ac/problems/10411) | | **D** | Facility Locations | `rmrc/2014/facility` | `rmrc/2014/problems.pdf` | [facility](https://open.kattis.com/problems/facility) | [10412](https://solved.ac/problems/10412) | | **E** | Repeated Substrings | `rmrc/2014/substrings` | `rmrc/2014/problems.pdf` | [substrings](https://open.kattis.com/problems/substrings) | [10413](https://solved.ac/problems/10413) | | **F** | Landline Telephone Network | `rmrc/2014/landline` | `rmrc/2014/problems.pdf` | [landline](https://open.kattis.com/problems/landline) | [10414](https://solved.ac/problems/10414) | | **G** | Aquarium Tank | `rmrc/2014/tank` | `rmrc/2014/problems.pdf` | [tank](https://open.kattis.com/problems/tank) | [10415](https://solved.ac/problems/10415) | | **H** | Restaurant Ratings | `rmrc/2014/ratings` | `rmrc/2014/problems.pdf` | [ratings](https://open.kattis.com/problems/ratings) | [10416](https://solved.ac/problems/10416) | | **I** | Locked Treasure | `rmrc/2014/locks` | `rmrc/2014/problems.pdf` | [lockedtreasure](https://open.kattis.com/problems/lockedtreasure) | [10417](https://solved.ac/problems/10417) | | **J** | Yet Satisfiability Again! | `rmrc/2014/sat` | `rmrc/2014/problems.pdf` | [satisfiability](https://open.kattis.com/problems/satisfiability) | [10418](https://solved.ac/problems/10418) | | **K** | Continued Fraction | `rmrc/2014/fraction` | `rmrc/2014/problems.pdf` | [fraction](https://open.kattis.com/problems/fraction) | [10386](https://solved.ac/problems/10386) | --- ## Rocky Mountain Regional Contest (2015) - **Contest Slug:** `rmrc` - **Year:** 2015 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Contest%20%28RMRC%29%202015) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1428) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------ | :------------------------ | :----------------------- | :-------------------------------------------------------------: | :---------------------------------------: | | **A** | Problem A | `rmrc/2015/vote` | `rmrc/2015/problems.pdf` | - | [11637](https://solved.ac/problems/11637) | | **B** | Flipping Cards | `rmrc/2015/flippingcards` | `rmrc/2015/problems.pdf` | [flippingcards](https://open.kattis.com/problems/flippingcards) | [11638](https://solved.ac/problems/11638) | | **C** | Amazing Race | `rmrc/2015/race` | `rmrc/2015/problems.pdf` | [race](https://open.kattis.com/problems/race) | [11639](https://solved.ac/problems/11639) | | **D** | Scaling Recipes | `rmrc/2015/recipes` | `rmrc/2015/problems.pdf` | [recipes](https://open.kattis.com/problems/recipes) | [11640](https://solved.ac/problems/11640) | | **E** | Space Junk | `rmrc/2015/junk` | `rmrc/2015/problems.pdf` | [junk](https://open.kattis.com/problems/junk) | [11641](https://solved.ac/problems/11641) | | **F** | A Classy Problem | `rmrc/2015/classy` | `rmrc/2015/problems.pdf` | [classy](https://open.kattis.com/problems/classy) | [11595](https://solved.ac/problems/11595) | | **G** | Rubik's Revenge in ... 2D!? 3D? | `rmrc/2015/rubiksrevenge` | `rmrc/2015/problems.pdf` | [rubiksrevenge](https://open.kattis.com/problems/rubiksrevenge) | [11642](https://solved.ac/problems/11642) | | **H** | The Magical 3 | `rmrc/2015/magical3` | `rmrc/2015/problems.pdf` | [magical3](https://open.kattis.com/problems/magical3) | [11643](https://solved.ac/problems/11643) | | **I** | Matrix Keypad | `rmrc/2015/keypad` | `rmrc/2015/problems.pdf` | [keypad](https://open.kattis.com/problems/keypad) | [11644](https://solved.ac/problems/11644) | | **J** | I've Been Everywhere, Man | `rmrc/2015/everywhere` | `rmrc/2015/problems.pdf` | [everywhere](https://open.kattis.com/problems/everywhere) | [11645](https://solved.ac/problems/11645) | | **K** | Bundles of Joy | `rmrc/2015/bundles` | `rmrc/2015/problems.pdf` | [bundles](https://open.kattis.com/problems/bundles) | [11646](https://solved.ac/problems/11646) | --- ## Rocky Mountain Regional Contest (2016) - **Contest Slug:** `rmrc` - **Year:** 2016 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Contest%20%28RMRC%29%202016) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1761) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------- | :--------------------- | :----------------------- | :-------------------------------------------------------: | :---------------------------------------: | | **A** | FizzBuzz | `rmrc/2016/fizzbuzz` | `rmrc/2016/problems.pdf` | [fizzbuzz](https://open.kattis.com/problems/fizzbuzz) | [14761](https://solved.ac/problems/14761) | | **B** | Election | `rmrc/2016/election` | `rmrc/2016/problems.pdf` | [election](https://open.kattis.com/problems/election) | [14762](https://solved.ac/problems/14762) | | **C** | Password Hacking | `rmrc/2016/password` | `rmrc/2016/problems.pdf` | [password](https://open.kattis.com/problems/password) | [14763](https://solved.ac/problems/14763) | | **D** | Delivering Goods | `rmrc/2016/delivering` | `rmrc/2016/problems.pdf` | [delivering](https://open.kattis.com/problems/delivering) | [14764](https://solved.ac/problems/14764) | | **E** | Studying For Exams | `rmrc/2016/studying` | `rmrc/2016/problems.pdf` | [studying](https://open.kattis.com/problems/studying) | [14765](https://solved.ac/problems/14765) | | **F** | Bumper-To-Bumper Traffic | `rmrc/2016/traffic` | `rmrc/2016/problems.pdf` | [traffic](https://open.kattis.com/problems/traffic) | [14766](https://solved.ac/problems/14766) | | **G** | Flow Shop | `rmrc/2016/flowshop` | `rmrc/2016/problems.pdf` | [flowshop](https://open.kattis.com/problems/flowshop) | [14767](https://solved.ac/problems/14767) | | **H** | Nice Numbers | `rmrc/2016/numbers` | `rmrc/2016/problems.pdf` | [numbers](https://open.kattis.com/problems/numbers) | [14768](https://solved.ac/problems/14768) | | **I** | Stacking Cups | `rmrc/2016/cups` | `rmrc/2016/problems.pdf` | [cups](https://open.kattis.com/problems/cups) | [14769](https://solved.ac/problems/14769) | | **J** | Stack Construction | `rmrc/2016/stack` | `rmrc/2016/problems.pdf` | [stack](https://open.kattis.com/problems/stack) | [14770](https://solved.ac/problems/14770) | --- ## Rocky Mountain Regional Contest (2017) - **Contest Slug:** `rmrc` - **Year:** 2017 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Contest%20%28RMRC%29%202017) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1811) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------- | :------------------------------ | :----------------------- | :-------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Hissing Microphone | `rmrc/2017/hissingmicrophone` | `rmrc/2017/problems.pdf` | [hissingmicrophone](https://open.kattis.com/problems/hissingmicrophone) | [15272](https://solved.ac/problems/15272) | | **B** | Open-Pit Mining | `rmrc/2017/openpitmining` | `rmrc/2017/problems.pdf` | [openpitmining](https://open.kattis.com/problems/openpitmining) | [15273](https://solved.ac/problems/15273) | | **C** | Multiplication Game | `rmrc/2017/multiplicationgame` | `rmrc/2017/problems.pdf` | [multiplicationgame](https://open.kattis.com/problems/multiplicationgame) | [15274](https://solved.ac/problems/15274) | | **D** | Polyline Simplification | `rmrc/2017/simplification` | `rmrc/2017/problems.pdf` | [simplification](https://open.kattis.com/problems/simplification) | [15275](https://solved.ac/problems/15275) | | **E** | Palindromic Password | `rmrc/2017/palindromicpassword` | `rmrc/2017/problems.pdf` | [palindromicpassword](https://open.kattis.com/problems/palindromicpassword) | [15276](https://solved.ac/problems/15276) | | **F** | Flow Free | `rmrc/2017/flowfree` | `rmrc/2017/problems.pdf` | [flowfree](https://open.kattis.com/problems/flowfree) | [15277](https://solved.ac/problems/15277) | | **G** | Decisions, Decisions | `rmrc/2017/decisions` | `rmrc/2017/problems.pdf` | [decisions](https://open.kattis.com/problems/decisions) | [15278](https://solved.ac/problems/15278) | | **H** | Heart Rate | `rmrc/2017/heartrate` | `rmrc/2017/problems.pdf` | [heartrate](https://open.kattis.com/problems/heartrate) | [15279](https://solved.ac/problems/15279) | | **I** | Initials | `rmrc/2017/initials` | `rmrc/2017/problems.pdf` | [initials](https://open.kattis.com/problems/initials) | [15280](https://solved.ac/problems/15280) | | **J** | Particle Collision | `rmrc/2017/particlecollision` | `rmrc/2017/problems.pdf` | [particlecollision](https://open.kattis.com/problems/particlecollision) | [15281](https://solved.ac/problems/15281) | | **K** | Frosh Week | `rmrc/2017/froshweek2` | `rmrc/2017/problems.pdf` | [froshweek2](https://open.kattis.com/problems/froshweek2) | [15282](https://solved.ac/problems/15282) | --- ## Rocky Mountain Regional Contest (2018) - **Contest Slug:** `rmrc` - **Year:** 2018 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Programming%20Contest%202018) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2613) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :---------------------------- | :----------------------- | :---------------------------------------------------------------------: | :---------------------------------------: | | **A** | Quality-Adjusted Life-Year | `rmrc/2018/qaly` | `rmrc/2018/problems.pdf` | [qaly](https://open.kattis.com/problems/qaly) | [22279](https://solved.ac/problems/22279) | | **B** | Gwen's Gift | `rmrc/2018/gwensgift` | `rmrc/2018/problems.pdf` | [gwensgift](https://open.kattis.com/problems/gwensgift) | [22280](https://solved.ac/problems/22280) | | **C** | Forest for the Trees | `rmrc/2018/forestforthetrees` | `rmrc/2018/problems.pdf` | [forestforthetrees](https://open.kattis.com/problems/forestforthetrees) | [22281](https://solved.ac/problems/22281) | | **D** | Index | `rmrc/2018/hindex` | `rmrc/2018/problems.pdf` | [hindex](https://open.kattis.com/problems/hindex) | [22282](https://solved.ac/problems/22282) | | **E** | Driving Lanes | `rmrc/2018/drivinglanes` | `rmrc/2018/problems.pdf` | [drivinglanes](https://open.kattis.com/problems/drivinglanes) | [22283](https://solved.ac/problems/22283) | | **F** | Treasure Spotting | `rmrc/2018/treasurespotting` | `rmrc/2018/problems.pdf` | [treasurespotting](https://open.kattis.com/problems/treasurespotting) | [22284](https://solved.ac/problems/22284) | | **G** | Neighborhood Watch | `rmrc/2018/neighborhoodwatch` | `rmrc/2018/problems.pdf` | [neighborhoodwatch](https://open.kattis.com/problems/neighborhoodwatch) | [22285](https://solved.ac/problems/22285) | | **H** | Small Schedule | `rmrc/2018/smallschedule` | `rmrc/2018/problems.pdf` | [smallschedule](https://open.kattis.com/problems/smallschedule) | [22286](https://solved.ac/problems/22286) | | **I** | Mr. Plow King | `rmrc/2018/plowking` | `rmrc/2018/problems.pdf` | [plowking](https://open.kattis.com/problems/plowking) | [22287](https://solved.ac/problems/22287) | | **J** | Rainbow Road Race | `rmrc/2018/rainbowroadrace` | `rmrc/2018/problems.pdf` | [rainbowroadrace](https://open.kattis.com/problems/rainbowroadrace) | [22288](https://solved.ac/problems/22288) | --- ## Rocky Mountain Regional Contest (2019) - **Contest Slug:** `rmrc` - **Year:** 2019 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Programming%20Contest%202019) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2100) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------- | :-------------------------- | :----------------------- | :-----------------------------------------------------------------: | :---------------------------------------: | | **A** | Piece of Cake! | `rmrc/2019/pieceofcake2` | `rmrc/2019/problems.pdf` | [pieceofcake2](https://open.kattis.com/problems/pieceofcake2) | [17874](https://solved.ac/problems/17874) | | **B** | Fantasy Draft | `rmrc/2019/fantasydraft` | `rmrc/2019/problems.pdf` | [fantasydraft](https://open.kattis.com/problems/fantasydraft) | [17875](https://solved.ac/problems/17875) | | **C** | Folding a Cube | `rmrc/2019/foldingacube` | `rmrc/2019/problems.pdf` | [foldingacube](https://open.kattis.com/problems/foldingacube) | [17876](https://solved.ac/problems/17876) | | **D** | Integer Division | `rmrc/2019/integerdivision` | `rmrc/2019/problems.pdf` | [integerdivision](https://open.kattis.com/problems/integerdivision) | [17877](https://solved.ac/problems/17877) | | **E** | Hogwarts | `rmrc/2019/hogwarts2` | `rmrc/2019/problems.pdf` | [hogwarts2](https://open.kattis.com/problems/hogwarts2) | [17878](https://solved.ac/problems/17878) | | **F** | Molecules | `rmrc/2019/molecules` | `rmrc/2019/problems.pdf` | [molecules](https://open.kattis.com/problems/molecules) | [17879](https://solved.ac/problems/17879) | | **G** | Typo | `rmrc/2019/typo` | `rmrc/2019/problems.pdf` | [typo](https://open.kattis.com/problems/typo) | [17880](https://solved.ac/problems/17880) | | **H** | The Biggest Triangle | `rmrc/2019/biggesttriangle` | `rmrc/2019/problems.pdf` | [biggesttriangle](https://open.kattis.com/problems/biggesttriangle) | [17881](https://solved.ac/problems/17881) | | **I** | Tired Terry | `rmrc/2019/tiredterry` | `rmrc/2019/problems.pdf` | [tiredterry](https://open.kattis.com/problems/tiredterry) | [17882](https://solved.ac/problems/17882) | | **J** | Watch Later | `rmrc/2019/watchlater` | `rmrc/2019/problems.pdf` | [watchlater](https://open.kattis.com/problems/watchlater) | [17883](https://solved.ac/problems/17883) | | **K** | Lost Lineup | `rmrc/2019/lostlineup` | `rmrc/2019/problems.pdf` | [lostlineup](https://open.kattis.com/problems/lostlineup) | [17884](https://solved.ac/problems/17884) | --- ## Rocky Mountain Regional Contest (2020) - **Contest Slug:** `rmrc` - **Year:** 2020 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Programming%20Contest%202020) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2466) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------- | :----------------------------- | :--------------------- | :-----------------------------------------------------------------------: | :---------------------------------------: | | **A** | Stopwatch (31/36) | `rmrc/2020/stopwatch` | `rmrc/2020/talk.pdf` | [stopwatch](https://open.kattis.com/problems/stopwatch) | [21197](https://solved.ac/problems/21197) | | **B** | Arithmetic Decoding (18/32) | `rmrc/2020/arithmeticdecoding` | `rmrc/2020/talk.pdf` | [arithmeticdecoding](https://open.kattis.com/problems/arithmeticdecoding) | [21198](https://solved.ac/problems/21198) | | **C** | Paper Snowflakes (3/14) | `rmrc/2020/papersnowflakes` | `rmrc/2020/talk.pdf` | [papersnowflakes](https://open.kattis.com/problems/papersnowflakes) | [21199](https://solved.ac/problems/21199) | | **D** | Forced Choice (31/33) | `rmrc/2020/forcedchoice` | `rmrc/2020/talk.pdf` | [forcedchoice](https://open.kattis.com/problems/forcedchoice) | [21200](https://solved.ac/problems/21200) | | **E** | Interview Queue (2/32) | `rmrc/2020/interviewqueue` | `rmrc/2020/talk.pdf` | [interviewqueue](https://open.kattis.com/problems/interviewqueue) | [21201](https://solved.ac/problems/21201) | | **F** | Conquest (13/51) | `rmrc/2020/conquest` | `rmrc/2020/talk.pdf` | [conquest](https://open.kattis.com/problems/conquest) | [21202](https://solved.ac/problems/21202) | | **G** | Distance (17/63) | `rmrc/2020/distance` | `rmrc/2020/talk.pdf` | [distance](https://open.kattis.com/problems/distance) | [21203](https://solved.ac/problems/21203) | | **H** | Antimatter Rain (1/13) | `rmrc/2020/antimatterrain` | `rmrc/2020/talk.pdf` | [antimatterrain](https://open.kattis.com/problems/antimatterrain) | [21204](https://solved.ac/problems/21204) | | **I** | Vaccine Efficacy (31/61) | `rmrc/2020/vaccineefficacy` | `rmrc/2020/talk.pdf` | [vaccineefficacy](https://open.kattis.com/problems/vaccineefficacy) | [21205](https://solved.ac/problems/21205) | | **J** | Pegs and Legs (4/22) | `rmrc/2020/pegsandlegs` | `rmrc/2020/talk.pdf` | [pegsandlegs](https://open.kattis.com/problems/pegsandlegs) | [21206](https://solved.ac/problems/21206) | | **K** | Train Boarding (21/90) | `rmrc/2020/trainboarding` | `rmrc/2020/talk.pdf` | [trainboarding](https://open.kattis.com/problems/trainboarding) | [21207](https://solved.ac/problems/21207) | --- ## Rocky Mountain Regional Contest (2021) - **Contest Slug:** `rmrc` - **Year:** 2021 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Programming%20Contest%202021) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/3061) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------ | :---------------------------- | :----------------------- | :---------------------------------------------------------------------: | :---------------------------------------: | | **A** | Betting | `rmrc/2021/betting` | `rmrc/2021/problems.pdf` | [betting](https://open.kattis.com/problems/betting) | [24751](https://solved.ac/problems/24751) | | **B** | Antialiasing | `rmrc/2021/antialiasing` | `rmrc/2021/problems.pdf` | [antialiasing](https://open.kattis.com/problems/antialiasing) | [24752](https://solved.ac/problems/24752) | | **C** | Social Distancing | `rmrc/2021/socialdistancing` | `rmrc/2021/problems.pdf` | [socialdistancing2](https://open.kattis.com/problems/socialdistancing2) | [24753](https://solved.ac/problems/24753) | | **D** | Pawn Shop | `rmrc/2021/pawnshop` | `rmrc/2021/problems.pdf` | [pawnshop](https://open.kattis.com/problems/pawnshop) | [24754](https://solved.ac/problems/24754) | | **E** | Election Paradox | `rmrc/2021/electionparadox` | `rmrc/2021/problems.pdf` | [electionparadox](https://open.kattis.com/problems/electionparadox) | [24755](https://solved.ac/problems/24755) | | **F** | Protect the Pollen! | `rmrc/2021/protectthepollen` | `rmrc/2021/problems.pdf` | [protectthepollen](https://open.kattis.com/problems/protectthepollen) | [24756](https://solved.ac/problems/24756) | | **G** | Loot Chest | `rmrc/2021/lootchest` | `rmrc/2021/problems.pdf` | [lootchest](https://open.kattis.com/problems/lootchest) | [24757](https://solved.ac/problems/24757) | | **H** | RSA Mistake | `rmrc/2021/rsamistake` | `rmrc/2021/problems.pdf` | [rsamistake](https://open.kattis.com/problems/rsamistake) | [24758](https://solved.ac/problems/24758) | | **I** | Slide Count | `rmrc/2021/slidecount` | `rmrc/2021/problems.pdf` | [slidecount](https://open.kattis.com/problems/slidecount) | [24759](https://solved.ac/problems/24759) | | **J** | Snowball Fight | `rmrc/2021/snowballfight` | `rmrc/2021/problems.pdf` | [snowballfight](https://open.kattis.com/problems/snowballfight) | [24760](https://solved.ac/problems/24760) | | **K** | Team Change | `rmrc/2021/teamchange` | `rmrc/2021/problems.pdf` | [teamchange](https://open.kattis.com/problems/teamchange) | [24761](https://solved.ac/problems/24761) | | **L** | Ticket Completed? | `rmrc/2021/ticketcompleted` | `rmrc/2021/problems.pdf` | [ticketcompleted](https://open.kattis.com/problems/ticketcompleted) | [24762](https://solved.ac/problems/24762) | | **M** | Trade Routes | `rmrc/2021/traderoutes` | `rmrc/2021/problems.pdf` | [traderoutes](https://open.kattis.com/problems/traderoutes) | [24763](https://solved.ac/problems/24763) | | **N** | Wordle with Friends | `rmrc/2021/wordlewithfriends` | `rmrc/2021/problems.pdf` | [wordlewithfriends](https://open.kattis.com/problems/wordlewithfriends) | [24764](https://solved.ac/problems/24764) | --- ## Rocky Mountain Regional Contest (2022) - **Contest Slug:** `rmrc` - **Year:** 2022 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/3516) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------------- | :--------------------------------------- | :----------------------- | :----: | :---------------------------------------: | | **A** | Blueberry Waffle | `rmrc/2022/blueberrywaffle` | `rmrc/2022/problems.pdf` | - | [27566](https://solved.ac/problems/27566) | | **B** | Profitable Trip | `rmrc/2022/profitabletrip` | `rmrc/2022/problems.pdf` | - | [27586](https://solved.ac/problems/27586) | | **C** | Champernowne Count | `rmrc/2022/champernownecount` | `rmrc/2022/problems.pdf` | - | [27569](https://solved.ac/problems/27569) | | **D** | Triangle Containment | `rmrc/2022/trianglecontainment` | `rmrc/2022/problems.pdf` | - | [27592](https://solved.ac/problems/27592) | | **E** | Color Tubes | `rmrc/2022/colortubes` | `rmrc/2022/problems.pdf` | - | [27571](https://solved.ac/problems/27571) | | **F** | Food Processor | `rmrc/2022/foodprocessor` | `rmrc/2022/problems.pdf` | - | [27581](https://solved.ac/problems/27581) | | **G** | Greedy Increasing Subsequences | `rmrc/2022/greedyincreasingsubsequences` | `rmrc/2022/problems.pdf` | - | [27582](https://solved.ac/problems/27582) | | **H** | Branch Manager | `rmrc/2022/branchmanager` | `rmrc/2022/problems.pdf` | - | [27568](https://solved.ac/problems/27568) | | **I** | I Could Have Won | `rmrc/2022/icouldhavewon` | `rmrc/2022/problems.pdf` | - | [27584](https://solved.ac/problems/27584) | | **J** | Sun and Moon | `rmrc/2022/sunandmoon` | `rmrc/2022/problems.pdf` | - | [27590](https://solved.ac/problems/27590) | | **K** | Everything Is A Nail | `rmrc/2022/everythingisanail` | `rmrc/2022/problems.pdf` | - | [27577](https://solved.ac/problems/27577) | | **L** | Family Visits | `rmrc/2022/familyvisits` | `rmrc/2022/problems.pdf` | - | [27580](https://solved.ac/problems/27580) | --- ## Rocky Mountain Regional Contest (2023) - **Contest Slug:** `rmrc` - **Year:** 2023 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Programming%20Contest%202023) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4016) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------- | :---------------------------- | :----------------------- | :---------------------------------------------------------------------: | :---------------------------------------: | | **A** | Attendance | `rmrc/2023/attendance2` | `rmrc/2023/problems.pdf` | [attendance2](https://open.kattis.com/problems/attendance2) | [30552](https://solved.ac/problems/30552) | | **B** | Add or Multiply | `rmrc/2023/addormultiply` | `rmrc/2023/problems.pdf` | [addormultiply](https://open.kattis.com/problems/addormultiply) | [30541](https://solved.ac/problems/30541) | | **C** | Guess Who | `rmrc/2023/guesswho` | `rmrc/2023/problems.pdf` | [guesswho](https://open.kattis.com/problems/guesswho) | [30553](https://solved.ac/problems/30553) | | **D** | Seven Up | `rmrc/2023/sevenup` | `rmrc/2023/problems.pdf` | [sevenup](https://open.kattis.com/problems/sevenup) | [30554](https://solved.ac/problems/30554) | | **E** | Gas Station | `rmrc/2023/gasstation` | `rmrc/2023/problems.pdf` | [gasstation](https://open.kattis.com/problems/gasstation) | [30546](https://solved.ac/problems/30546) | | **F** | Thwack! | `rmrc/2023/thwack` | `rmrc/2023/problems.pdf` | [thwack](https://open.kattis.com/problems/thwack) | [30555](https://solved.ac/problems/30555) | | **G** | Bombardment | `rmrc/2023/bombardment` | `rmrc/2023/problems.pdf` | [bombardment](https://open.kattis.com/problems/bombardment) | [30543](https://solved.ac/problems/30543) | | **H** | Scientific Grading | `rmrc/2023/scientificgrading` | `rmrc/2023/problems.pdf` | [scientificgrading](https://open.kattis.com/problems/scientificgrading) | [30550](https://solved.ac/problems/30550) | | **I** | Building Roads | `rmrc/2023/buildingroads` | `rmrc/2023/problems.pdf` | [buildingroads](https://open.kattis.com/problems/buildingroads) | [30556](https://solved.ac/problems/30556) | | **J** | Don't Be Fake | `rmrc/2023/dontbefake` | `rmrc/2023/problems.pdf` | [dontbefake](https://open.kattis.com/problems/dontbefake) | [30557](https://solved.ac/problems/30557) | | **K** | A Complex Problem | `rmrc/2023/acomplexproblem` | `rmrc/2023/problems.pdf` | [acomplexproblem](https://open.kattis.com/problems/acomplexproblem) | [30540](https://solved.ac/problems/30540) | | **L** | Ribbon Road | `rmrc/2023/ribbonroad` | `rmrc/2023/problems.pdf` | [ribbonroad](https://open.kattis.com/problems/ribbonroad) | [30549](https://solved.ac/problems/30549) | --- ## Rocky Mountain Regional Contest (2024) - **Contest Slug:** `rmrc` - **Year:** 2024 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Programming%20Contest%202024) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4331) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------ | :------------------------------------- | :------------------------- | :---------------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Airfare Grants | `rmrc/2024/airfaregrants` | `rmrc/2024/problemset.pdf` | [airfaregrants](https://open.kattis.com/problems/airfaregrants) | [32661](https://solved.ac/problems/32661) | | **B** | Always Know Where Your Towel Is | `rmrc/2024/alwaysknowwhereyourtowelis` | `rmrc/2024/problemset.pdf` | [alwaysknowwhereyourtowelis](https://open.kattis.com/problems/alwaysknowwhereyourtowelis) | [32662](https://solved.ac/problems/32662) | | **C** | Big And | `rmrc/2024/bigand` | `rmrc/2024/problemset.pdf` | [bigand](https://open.kattis.com/problems/bigand) | [32663](https://solved.ac/problems/32663) | | **D** | Emoticons | `rmrc/2024/emoticons` | `rmrc/2024/problemset.pdf` | [emoticons2](https://open.kattis.com/problems/emoticons2) | [32666](https://solved.ac/problems/32666) | | **E** | Enchanted Maze | `rmrc/2024/enchantedmaze` | `rmrc/2024/problemset.pdf` | [enchantedmaze](https://open.kattis.com/problems/enchantedmaze) | [32667](https://solved.ac/problems/32667) | | **F** | Garage Door Code | `rmrc/2024/garagedoorcode` | `rmrc/2024/problemset.pdf` | [garagedoorcode](https://open.kattis.com/problems/garagedoorcode) | [32669](https://solved.ac/problems/32669) | | **G** | Palindromic Word Search | `rmrc/2024/palindromicwordsearch` | `rmrc/2024/problemset.pdf` | [palindromicwordsearch](https://open.kattis.com/problems/palindromicwordsearch) | [32674](https://solved.ac/problems/32674) | | **H** | Pillow Stacking | `rmrc/2024/pillowstacking` | `rmrc/2024/problemset.pdf` | [pillowstacking](https://open.kattis.com/problems/pillowstacking) | [32676](https://solved.ac/problems/32676) | | **I** | Rectangle Tiling | `rmrc/2024/rectangletiling` | `rmrc/2024/problemset.pdf` | [rectangletiling](https://open.kattis.com/problems/rectangletiling) | [32677](https://solved.ac/problems/32677) | | **J** | Rocky Mountain | `rmrc/2024/rockymountain` | `rmrc/2024/problemset.pdf` | [rockymountain](https://open.kattis.com/problems/rockymountain) | [32678](https://solved.ac/problems/32678) | | **K** | Sandwich Art | `rmrc/2024/sandwichart` | `rmrc/2024/problemset.pdf` | [sandwichart](https://open.kattis.com/problems/sandwichart) | [32679](https://solved.ac/problems/32679) | | **L** | Sauna | `rmrc/2024/sauna` | `rmrc/2024/problemset.pdf` | [sauna](https://open.kattis.com/problems/sauna) | [32680](https://solved.ac/problems/32680) | | **M** | Space Elevator | `rmrc/2024/spaceelevator` | `rmrc/2024/problemset.pdf` | [spaceelevator](https://open.kattis.com/problems/spaceelevator) | [32681](https://solved.ac/problems/32681) | --- ## Rocky Mountain Regional Contest (2025) - **Contest Slug:** `rmrc` - **Year:** 2025 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Programming%20Contest%202025) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------- | :------------------------------- | :--------------------------------------------------- | :---------------------------------------------------------------------------: | :-------: | | **A** | Adrift At Sea | `rmrc/2025/adriftatsea` | `rmrc/2025/Problemset.pdf` | [adriftatsea](https://open.kattis.com/problems/adriftatsea) | - | | **B** | Buying Jerseys | `rmrc/2025/buyingjerseys` | `rmrc/2025/Problemset.pdf` | [buyingjerseys](https://open.kattis.com/problems/buyingjerseys) | - | | **C** | Conveyor Belt Sushi | `rmrc/2025/conveyorbeltsushi` | `rmrc/2025/Problemset.pdf` | [conveyorbeltsushi](https://open.kattis.com/problems/conveyorbeltsushi) | - | | **D** | Corporate Retreat | `rmrc/2025/corporateretreat` | `rmrc/2025/Problemset.pdf` | [corporateretreat](https://open.kattis.com/problems/corporateretreat) | - | | **E** | Draft Lottery | `rmrc/2025/draftlottery` | `rmrc/2025/Problemset.pdf` | [draftlottery](https://open.kattis.com/problems/draftlottery) | - | | **F** | Energy Usage | `rmrc/2025/energyusage` | `rmrc/2025/Problemset.pdf` | [energyusage](https://open.kattis.com/problems/energyusage) | - | | **G** | Genies | `rmrc/2025/genies` | `rmrc/2025/Problemset.pdf` | [genies](https://open.kattis.com/problems/genies) | - | | **H** | Hexadecimal Confusion | `rmrc/2025/hexadecimalconfusion` | `rmrc/2025/Problemset.pdf` | [hexadecimalconfusion](https://open.kattis.com/problems/hexadecimalconfusion) | - | | **I** | Poetic Tournament | `rmrc/2025/poetictournament` | `rmrc/2025/Problemset.pdf` | [poetictournament](https://open.kattis.com/problems/poetictournament) | - | | **J** | Spies vs. Spies | `rmrc/2025/spiesvsspies` | `rmrc/2025/spiesvsspies/problem_statement/spies.pdf` | [corporateretreat](https://open.kattis.com/problems/corporateretreat) | - | | **K** | Team Practice | `rmrc/2025/teampractice` | `rmrc/2025/Problemset.pdf` | [teampractice](https://open.kattis.com/problems/teampractice) | - | | **L** | Video Games | `rmrc/2025/videogames` | `rmrc/2025/Problemset.pdf` | [videogames](https://open.kattis.com/problems/videogames) | - | | **M** | What Time Is It Mr. Fox? | `rmrc/2025/whattimeisitmrfox` | `rmrc/2025/Problemset.pdf` | [whattimeisitmrfox](https://open.kattis.com/problems/whattimeisitmrfox) | - | --- ## South Central USA Regional Contest (2006) - **Contest Slug:** `scusa` - **Year:** 2006 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/173) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------------------- | :---------------- | :--------------------- | :----: | :-------------------------------------: | | **1** | Rounders | `scusa/2006/1` | `scusa/2006/1/1.pdf` | - | [4539](https://solved.ac/problems/4539) | | **2** | Q | `scusa/2006/2` | `scusa/2006/2/2.pdf` | - | [4540](https://solved.ac/problems/4540) | | **3** | Enigmatologically Cruciverbalistic | `scusa/2006/3` | `scusa/2006/3/3.pdf` | - | [4541](https://solved.ac/problems/4541) | | **4** | Blue Jeans | `scusa/2006/4` | `scusa/2006/4/4.pdf` | - | [4542](https://solved.ac/problems/4542) | | **5** | Core Wars | `scusa/2006/5` | `scusa/2006/5/5.pdf` | - | [4543](https://solved.ac/problems/4543) | | **6** | 'Roid Rage | `scusa/2006/6` | `scusa/2006/6/6.pdf` | - | [4544](https://solved.ac/problems/4544) | | **7** | Children of the Candy Corn | `scusa/2006/7` | `scusa/2006/7/7.pdf` | - | [4545](https://solved.ac/problems/4545) | | **8** | Panic Room | `scusa/2006/8` | `scusa/2006/8/8.pdf` | - | [4546](https://solved.ac/problems/4546) | --- ## South Central USA Regional Contest (2007) - **Contest Slug:** `scusa` - **Year:** 2007 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/172) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------------- | :---------------- | :--------------------- | :----: | :-------------------------------------: | | **1** | One is an Interesting Number | `scusa/2007/1` | `scusa/2007/1/1.pdf` | - | [4530](https://solved.ac/problems/4530) | | **2** | Verdis Quo | `scusa/2007/2` | `scusa/2007/2/2.pdf` | - | [4531](https://solved.ac/problems/4531) | | **3** | The Screen Behind the Mirror | `scusa/2007/3` | `scusa/2007/3/3.pdf` | - | [4532](https://solved.ac/problems/4532) | | **4** | Another Brick in the Wall | `scusa/2007/4` | `scusa/2007/4/4.pdf` | - | [4533](https://solved.ac/problems/4533) | | **5** | The Sidewinder Sleeps Tonite | `scusa/2007/5` | `scusa/2007/5/5.pdf` | - | [4534](https://solved.ac/problems/4534) | | **6** | Rout 66 | `scusa/2007/6` | `scusa/2007/6/6.pdf` | - | [4535](https://solved.ac/problems/4535) | | **7** | Schottkey 7th Path | `scusa/2007/7` | `scusa/2007/7/7.pdf` | - | [4536](https://solved.ac/problems/4536) | | **8** | Another Version of the Truth | `scusa/2007/8` | `scusa/2007/8/8.pdf` | - | [4537](https://solved.ac/problems/4537) | | **9** | The Final Countdown | `scusa/2007/9` | `scusa/2007/9/9.pdf` | - | [4538](https://solved.ac/problems/4538) | --- ## South Central USA Regional Contest (2008) - **Contest Slug:** `scusa` - **Year:** 2008 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/171) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------- | :---------------- | :--------------------- | :----: | :-------------------------------------: | | **1** | Rank and File | `scusa/2008/1` | `scusa/2008/1/1.pdf` | - | [4521](https://solved.ac/problems/4521) | | **2** | The Extent of the Problem | `scusa/2008/2` | `scusa/2008/2/2.pdf` | - | [4522](https://solved.ac/problems/4522) | | **3** | Filtration | `scusa/2008/3` | `scusa/2008/3/3.pdf` | - | [4523](https://solved.ac/problems/4523) | | **4** | Like Water for Clay | `scusa/2008/4` | `scusa/2008/4/4.pdf` | - | [4524](https://solved.ac/problems/4524) | | **5** | Wandering Aimlessly | `scusa/2008/5` | `scusa/2008/5/5.pdf` | - | [4525](https://solved.ac/problems/4525) | | **6** | Cables ... in Spaaace! | `scusa/2008/6` | `scusa/2008/6/6.pdf` | - | [4526](https://solved.ac/problems/4526) | | **7** | Patterns and Pictures | `scusa/2008/7` | `scusa/2008/7/7.pdf` | - | [4527](https://solved.ac/problems/4527) | | **8** | No Wormholes Were Harmed... | `scusa/2008/8` | `scusa/2008/8/8.pdf` | - | [4528](https://solved.ac/problems/4528) | | **9** | Tribute (Editor) | `scusa/2008/9` | `scusa/2008/9/9.pdf` | - | [4529](https://solved.ac/problems/4529) | --- ## South Central USA Regional Contest (2022) - **Contest Slug:** `scusa` - **Year:** 2022 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2022%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2025%2C%202023%29) - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/3507) | [Div 2](https://solved.ac/problems/archive/contest/3510) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :------------------------------------ | :----------------------- | :---------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Fading Wind | `scusa/2022/fadingwind` | `scusa/2022/seusad1.pdf` | [fadingwind](https://open.kattis.com/problems/fadingwind) | [27579](https://solved.ac/problems/27579) | | **B** | Creative Accounting | `scusa/2022/creativeaccounting` | `scusa/2022/seusad1.pdf` | [creativeaccounting](https://open.kattis.com/problems/creativeaccounting) | [27573](https://solved.ac/problems/27573) | | **C** | Chocolate Chip Fabrication | `scusa/2022/chocolatechipfabrication` | `scusa/2022/seusad1.pdf` | [chocolatechipfabrication](https://open.kattis.com/problems/chocolatechipfabrication) | [27570](https://solved.ac/problems/27570) | | **D** | Counting Satellites | `scusa/2022/countingsatellites` | `scusa/2022/seusad1.pdf` | [countingsatellites](https://open.kattis.com/problems/countingsatellites) | [27572](https://solved.ac/problems/27572) | | **E** | Exponent Exchange | `scusa/2022/exponentexchange` | `scusa/2022/seusad1.pdf` | [exponentexchange](https://open.kattis.com/problems/exponentexchange) | [27578](https://solved.ac/problems/27578) | | **F** | Family Visits | `scusa/2022/familyvisits` | `scusa/2022/seusad1.pdf` | [familyvisits](https://open.kattis.com/problems/familyvisits) | [27580](https://solved.ac/problems/27580) | | **G** | Eroding Pillars | `scusa/2022/erodingpillars` | `scusa/2022/seusad1.pdf` | [erodingpillars](https://open.kattis.com/problems/erodingpillars) | [27576](https://solved.ac/problems/27576) | | **H** | Triangle Containment | `scusa/2022/trianglecontainment` | `scusa/2022/seusad1.pdf` | [trianglecontainment](https://open.kattis.com/problems/trianglecontainment) | [27592](https://solved.ac/problems/27592) | | **I** | Color Tubes | `scusa/2022/colortubes` | `scusa/2022/seusad1.pdf` | [colortubes](https://open.kattis.com/problems/colortubes) | [27571](https://solved.ac/problems/27571) | | **J** | Three Dice | `scusa/2022/threedice` | `scusa/2022/seusad1.pdf` | [threedice](https://open.kattis.com/problems/threedice) | [27591](https://solved.ac/problems/27591) | | **K** | Lone Knight | `scusa/2022/loneknight` | `scusa/2022/seusad1.pdf` | [loneknight](https://open.kattis.com/problems/loneknight) | [27585](https://solved.ac/problems/27585) | | **L** | Branch Manager | `scusa/2022/branchmanager` | `scusa/2022/seusad1.pdf` | [branchmanager](https://open.kattis.com/problems/branchmanager) | [27568](https://solved.ac/problems/27568) | | **M** | Alchemy | `scusa/2022/alchemy` | `scusa/2022/seusad1.pdf` | [alchemy2](https://open.kattis.com/problems/alchemy2) | [27565](https://solved.ac/problems/27565) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :------------------------------------ | :----------------------- | :---------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Blueberry Waffle | `scusa/2022/blueberrywaffle` | - | [blueberrywaffle](https://open.kattis.com/problems/blueberrywaffle) | [27566](https://solved.ac/problems/27566) | | **B** | Fading Wind | `scusa/2022/fadingwind` | - | [fadingwind](https://open.kattis.com/problems/fadingwind) | [27579](https://solved.ac/problems/27579) | | **C** | Creative Accounting | `scusa/2022/creativeaccounting` | - | [creativeaccounting](https://open.kattis.com/problems/creativeaccounting) | [27573](https://solved.ac/problems/27573) | | **D** | Chocolate Chip Fabrication | `scusa/2022/chocolatechipfabrication` | - | [chocolatechipfabrication](https://open.kattis.com/problems/chocolatechipfabrication) | [27570](https://solved.ac/problems/27570) | | **E** | Everything Is A Nail | `scusa/2022/everythingisanail` | - | [everythingisanail](https://open.kattis.com/problems/everythingisanail) | [27577](https://solved.ac/problems/27577) | | **F** | Family Visits | `scusa/2022/familyvisits` | - | [familyvisits](https://open.kattis.com/problems/familyvisits) | [27580](https://solved.ac/problems/27580) | | **G** | Streets Ahead | `scusa/2022/streetsahead` | - | [streetsahead](https://open.kattis.com/problems/streetsahead) | [27589](https://solved.ac/problems/27589) | | **H** | Sun and Moon | `scusa/2022/sunandmoon` | - | [sunandmoon](https://open.kattis.com/problems/sunandmoon) | [27590](https://solved.ac/problems/27590) | | **I** | Color Tubes | `scusa/2022/colortubes` | - | [colortubes](https://open.kattis.com/problems/colortubes) | [27571](https://solved.ac/problems/27571) | | **J** | Three Dice | `scusa/2022/threedice` | - | [threedice](https://open.kattis.com/problems/threedice) | [27591](https://solved.ac/problems/27591) | | **K** | Food Processor | `scusa/2022/foodprocessor` | - | [foodprocessor](https://open.kattis.com/problems/foodprocessor) | [27581](https://solved.ac/problems/27581) | | **L** | Branch Manager | `scusa/2022/branchmanager` | - | [branchmanager](https://open.kattis.com/problems/branchmanager) | [27568](https://solved.ac/problems/27568) | | **M** | Alchemy | `scusa/2022/alchemy` | - | [alchemy2](https://open.kattis.com/problems/alchemy2) | [27565](https://solved.ac/problems/27565) | --- ## South Central USA Regional Contest (2023) - **Contest Slug:** `scusa` - **Year:** 2023 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2023%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2024%2C%202024%29) - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/4159) | [Div 2](https://solved.ac/problems/archive/contest/4160) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------ | :----------------------------------------- | :------------------------- | :---------------------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | ABC String | `scusa/2023/abcstring` | `scusa/2023/seusad1-1.pdf` | [abcstring](https://open.kattis.com/problems/abcstring) | [31506](https://solved.ac/problems/31506) | | **B** | Balanced Tree Path | `scusa/2023/balancedtreepath` | `scusa/2023/seusad1-1.pdf` | [balancedtreepath](https://open.kattis.com/problems/balancedtreepath) | [31523](https://solved.ac/problems/31523) | | **C** | Cramming for Finals | `scusa/2023/crammingforfinals` | `scusa/2023/seusad1-1.pdf` | [crammingforfinals](https://open.kattis.com/problems/crammingforfinals) | [31509](https://solved.ac/problems/31509) | | **D** | Ordered Problem Set | `scusa/2023/orderedproblemset` | `scusa/2023/seusad1-1.pdf` | [orderedproblemset](https://open.kattis.com/problems/orderedproblemset) | [31522](https://solved.ac/problems/31522) | | **E** | Eccentric Excursion | `scusa/2023/eccentricexcursion` | `scusa/2023/seusad1-1.pdf` | [eccentricexcursion](https://open.kattis.com/problems/eccentricexcursion) | [31510](https://solved.ac/problems/31510) | | **F** | Matrix Fraud | `scusa/2023/matrixfraud` | `scusa/2023/seusad1-1.pdf` | [matrixfraud](https://open.kattis.com/problems/matrixfraud) | [31512](https://solved.ac/problems/31512) | | **G** | On-Call Team | `scusa/2023/oncallteam` | `scusa/2023/seusad1-1.pdf` | [oncallteam](https://open.kattis.com/problems/oncallteam) | [31513](https://solved.ac/problems/31513) | | **H** | Range Editing | `scusa/2023/rangeediting` | `scusa/2023/seusad1-1.pdf` | [rangeediting](https://open.kattis.com/problems/rangeediting) | [31514](https://solved.ac/problems/31514) | | **I** | Item Selection | `scusa/2023/itemselection` | `scusa/2023/seusad1-1.pdf` | [itemselection](https://open.kattis.com/problems/itemselection) | [31511](https://solved.ac/problems/31511) | | **J** | Sequence Guessing | `scusa/2023/sequenceguessing` | `scusa/2023/seusad1-1.pdf` | [sequenceguessing](https://open.kattis.com/problems/sequenceguessing) | [31516](https://solved.ac/problems/31516) | | **K** | Streets Behind | `scusa/2023/streetsbehind` | `scusa/2023/seusad1-1.pdf` | [streetsbehind](https://open.kattis.com/problems/streetsbehind) | [31525](https://solved.ac/problems/31525) | | **L** | Segment Drawing | `scusa/2023/segmentdrawing` | `scusa/2023/seusad1-1.pdf` | [segmentdrawing](https://open.kattis.com/problems/segmentdrawing) | [31515](https://solved.ac/problems/31515) | | **M** | Champernowne Verification | `scusa/2023/champernowneverification` | `scusa/2023/seusad1-1.pdf` | [champernowneverification](https://open.kattis.com/problems/champernowneverification) | [31520](https://solved.ac/problems/31520) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------ | :----------------------------------------- | :------------------------- | :---------------------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | ABC String | `scusa/2023/abcstring` | `scusa/2023/seusad2-3.pdf` | [abcstring](https://open.kattis.com/problems/abcstring) | [31506](https://solved.ac/problems/31506) | | **B** | Balanced Tree Path | `scusa/2023/balancedtreepath` | `scusa/2023/seusad2-3.pdf` | [balancedtreepath](https://open.kattis.com/problems/balancedtreepath) | [31523](https://solved.ac/problems/31523) | | **C** | A Cappella Recording | `scusa/2023/acappellarecording` | `scusa/2023/seusad2-3.pdf` | [acappellarecording](https://open.kattis.com/problems/acappellarecording) | [31519](https://solved.ac/problems/31519) | | **D** | Ordered Problem Set | `scusa/2023/orderedproblemset` | `scusa/2023/seusad2-3.pdf` | [orderedproblemset](https://open.kattis.com/problems/orderedproblemset) | [31522](https://solved.ac/problems/31522) | | **E** | Acceptable Seating Arrangements | `scusa/2023/acceptableseatingarrangements` | `scusa/2023/seusad2-3.pdf` | [acceptableseatingarrangements](https://open.kattis.com/problems/acceptableseatingarrangements) | [31507](https://solved.ac/problems/31507) | | **F** | Four Die Rolls | `scusa/2023/fourdierolls` | `scusa/2023/seusad2-3.pdf` | [fourdierolls](https://open.kattis.com/problems/fourdierolls) | [31521](https://solved.ac/problems/31521) | | **G** | Rampant Growth | `scusa/2023/rampantgrowth` | `scusa/2023/seusad2-3.pdf` | [rampantgrowth](https://open.kattis.com/problems/rampantgrowth) | [31526](https://solved.ac/problems/31526) | | **H** | Triple Sevens | `scusa/2023/triplesevens` | `scusa/2023/seusad2-3.pdf` | [triplesevens](https://open.kattis.com/problems/triplesevens) | [31518](https://solved.ac/problems/31518) | | **I** | Item Selection | `scusa/2023/itemselection` | `scusa/2023/seusad2-3.pdf` | [itemselection](https://open.kattis.com/problems/itemselection) | [31511](https://solved.ac/problems/31511) | | **J** | Sequence Guessing | `scusa/2023/sequenceguessing` | `scusa/2023/seusad2-3.pdf` | [sequenceguessing](https://open.kattis.com/problems/sequenceguessing) | [31516](https://solved.ac/problems/31516) | | **K** | Streets Behind | `scusa/2023/streetsbehind` | `scusa/2023/seusad2-3.pdf` | [streetsbehind](https://open.kattis.com/problems/streetsbehind) | [31525](https://solved.ac/problems/31525) | | **L** | Training | `scusa/2023/training` | `scusa/2023/seusad2-3.pdf` | [training](https://open.kattis.com/problems/training) | [31517](https://solved.ac/problems/31517) | | **M** | Champernowne Verification | `scusa/2023/champernowneverification` | `scusa/2023/seusad2-3.pdf` | [champernowneverification](https://open.kattis.com/problems/champernowneverification) | [31520](https://solved.ac/problems/31520) | --- ## South Central USA Regional Contest (2024) - **Contest Slug:** `scusa` - **Year:** 2024 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2024%20ICPC%20South%20Central%2C%20South%20East%20and%20Mid%20Atlantic%20Regional%20%28November%2016%2C%202024%29) - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/4675) | [Div 2](https://solved.ac/problems/archive/contest/4676) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------- | :------------------------------------ | :------------------------- | :-----------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Welcome Sign | `scusa/2024/welcomesign` | `scusa/2024/seusad1-2.pdf` | [welcomesign](https://open.kattis.com/problems/welcomesign) | [32841](https://solved.ac/problems/32841) | | **B** | Triangles of a Square | `scusa/2024/trianglesofasquare` | `scusa/2024/seusad1-2.pdf` | [trianglesofasquare](https://open.kattis.com/problems/trianglesofasquare) | [32842](https://solved.ac/problems/32842) | | **C** | City Bike | `scusa/2024/citybike` | `scusa/2024/seusad1-2.pdf` | [citybike](https://open.kattis.com/problems/citybike) | [32843](https://solved.ac/problems/32843) | | **D** | Duel of Cards | `scusa/2024/duelofcards` | `scusa/2024/seusad1-2.pdf` | [duelofcards](https://open.kattis.com/problems/duelofcards) | [32844](https://solved.ac/problems/32844) | | **E** | Elevated Rails | `scusa/2024/elevatedrails` | `scusa/2024/seusad1-2.pdf` | [elevatedrails](https://open.kattis.com/problems/elevatedrails) | [32845](https://solved.ac/problems/32845) | | **F** | Finding Keys | `scusa/2024/findingkeys` | `scusa/2024/seusad1-2.pdf` | [findingkeys](https://open.kattis.com/problems/findingkeys) | [32846](https://solved.ac/problems/32846) | | **G** | Intergalactic Team | `scusa/2024/intergalacticteam` | `scusa/2024/seusad1-2.pdf` | [intergalacticteam](https://open.kattis.com/problems/intergalacticteam) | [32847](https://solved.ac/problems/32847) | | **H** | Herb Mixing | `scusa/2024/herbmixing` | `scusa/2024/seusad1-2.pdf` | [herbmixing](https://open.kattis.com/problems/herbmixing) | [32848](https://solved.ac/problems/32848) | | **I** | Island Memories | `scusa/2024/islandmemories` | `scusa/2024/seusad1-2.pdf` | [islandmemories](https://open.kattis.com/problems/islandmemories) | [32849](https://solved.ac/problems/32849) | | **J** | Perfect Squares | `scusa/2024/perfectsquares` | `scusa/2024/seusad1-2.pdf` | [perfectsquares](https://open.kattis.com/problems/perfectsquares) | [32850](https://solved.ac/problems/32850) | | **K** | Optimized Cheating | `scusa/2024/optimizedcheating` | `scusa/2024/seusad1-2.pdf` | [optimizedcheating](https://open.kattis.com/problems/optimizedcheating) | [32851](https://solved.ac/problems/32851) | | **L** | Pianissimo | `scusa/2024/pianissimo` | `scusa/2024/seusad1-2.pdf` | [pianissimo](https://open.kattis.com/problems/pianissimo) | [32852](https://solved.ac/problems/32852) | | **M** | Virtual Reality Playspace | `scusa/2024/virtualrealityplayspace` | `scusa/2024/seusad1-2.pdf` | [vrplayspace](https://open.kattis.com/problems/vrplayspace) | [32853](https://solved.ac/problems/32853) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------- | :------------------------------------ | :------------------------- | :-----------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Welcome Sign | `scusa/2024/welcomesign` | `scusa/2024/seusad2-4.pdf` | [welcomesign](https://open.kattis.com/problems/welcomesign) | [32841](https://solved.ac/problems/32841) | | **B** | Triangles of a Square | `scusa/2024/trianglesofasquare` | `scusa/2024/seusad2-4.pdf` | [trianglesofasquare](https://open.kattis.com/problems/trianglesofasquare) | [32842](https://solved.ac/problems/32842) | | **C** | Traffic Lights | `scusa/2024/trafficlights` | `scusa/2024/seusad2-4.pdf` | [trafficlights](https://open.kattis.com/problems/trafficlights) | [32854](https://solved.ac/problems/32854) | | **D** | Duel of Cards | `scusa/2024/duelofcards` | `scusa/2024/seusad2-4.pdf` | [duelofcards](https://open.kattis.com/problems/duelofcards) | [32844](https://solved.ac/problems/32844) | | **E** | Which One is Larger | `scusa/2024/whichoneislarger` | `scusa/2024/seusad2-4.pdf` | [whichoneislarger](https://open.kattis.com/problems/whichoneislarger) | [32855](https://solved.ac/problems/32855) | | **F** | Office Building | `scusa/2024/officebuilding` | `scusa/2024/seusad2-4.pdf` | [officebuilding](https://open.kattis.com/problems/officebuilding) | [32856](https://solved.ac/problems/32856) | | **G** | Intergalactic Team | `scusa/2024/intergalacticteam` | `scusa/2024/seusad2-4.pdf` | [intergalacticteam](https://open.kattis.com/problems/intergalacticteam) | [32847](https://solved.ac/problems/32847) | | **H** | Herb Mixing | `scusa/2024/herbmixing` | `scusa/2024/seusad2-4.pdf` | [herbmixing](https://open.kattis.com/problems/herbmixing) | [32848](https://solved.ac/problems/32848) | | **I** | Island Memories | `scusa/2024/islandmemories` | `scusa/2024/seusad2-4.pdf` | [islandmemories](https://open.kattis.com/problems/islandmemories) | [32849](https://solved.ac/problems/32849) | | **J** | Perfect Squares | `scusa/2024/perfectsquares` | `scusa/2024/seusad2-4.pdf` | [perfectsquares](https://open.kattis.com/problems/perfectsquares) | [32850](https://solved.ac/problems/32850) | | **K** | Optimized Cheating | `scusa/2024/optimizedcheating` | `scusa/2024/seusad2-4.pdf` | [optimizedcheating](https://open.kattis.com/problems/optimizedcheating) | [32851](https://solved.ac/problems/32851) | | **L** | Pianissimo | `scusa/2024/pianissimo` | `scusa/2024/seusad2-4.pdf` | [pianissimo](https://open.kattis.com/problems/pianissimo) | [32852](https://solved.ac/problems/32852) | | **M** | Memories of Passport Stamps | `scusa/2024/memoriesofpassportstamps` | `scusa/2024/seusad2-4.pdf` | [memoriesofpassportstamps](https://open.kattis.com/problems/memoriesofpassportstamps) | [32857](https://solved.ac/problems/32857) | --- ## South Central USA Regional Contest (2025) - **Contest Slug:** `scusa` - **Year:** 2025 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2025%20ICPC%20South%20Central%2C%20South%20East%20and%20Mid%20Atlantic%20Regional%20%28November%208%2C%202025%29) - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/4681) | [Div 2](https://solved.ac/problems/archive/contest/4682) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------------- | :------------------------------------- | :------------------------- | :-------------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Orchard Fence | `scusa/2025/orchardfence` | `scusa/2025/scdiv1-1.pdf` | [orchardfence](https://open.kattis.com/problems/orchardfence) | [35354](https://solved.ac/problems/35354) | | **B** | Blind Bottles | `scusa/2025/blindbottles` | `scusa/2025/scdiv1-1.pdf` | [blindbottles](https://open.kattis.com/problems/blindbottles) | [35355](https://solved.ac/problems/35355) | | **C** | One Way Only | `scusa/2025/onewayonly` | `scusa/2025/scdiv1-1.pdf` | [onewayonly](https://open.kattis.com/problems/onewayonly) | [35356](https://solved.ac/problems/35356) | | **D** | GUID Generator | `scusa/2025/guidgenerator` | `scusa/2025/scdiv1-1.pdf` | [guidgenerator](https://open.kattis.com/problems/guidgenerator) | [35357](https://solved.ac/problems/35357) | | **E** | Photo Encoding | `scusa/2025/photoencoding` | `scusa/2025/scdiv1-1.pdf` | [photoencoding](https://open.kattis.com/problems/photoencoding) | [35358](https://solved.ac/problems/35358) | | **F** | Meeting Free Fridays | `scusa/2025/meetingfreefridays` | `scusa/2025/scdiv1-1.pdf` | [meetingfreefridays](https://open.kattis.com/problems/meetingfreefridays) | [35359](https://solved.ac/problems/35359) | | **G** | Galaxy Governance | `scusa/2025/galaxygovernance` | `scusa/2025/scdiv1-1.pdf` | [galaxygovernance](https://open.kattis.com/problems/galaxygovernance) | [35360](https://solved.ac/problems/35360) | | **H** | Rows of Stars | `scusa/2025/rowsofstars` | `scusa/2025/scdiv1-1.pdf` | [rowsofstars](https://open.kattis.com/problems/rowsofstars) | [35361](https://solved.ac/problems/35361) | | **I** | Manhattan Interference | `scusa/2025/manhattaninterference` | `scusa/2025/scdiv1-1.pdf` | [manhattaninterference](https://open.kattis.com/problems/manhattaninterference) | [35362](https://solved.ac/problems/35362) | | **J** | Game of Nines | `scusa/2025/gameofnines` | `scusa/2025/scdiv1-1.pdf` | [gameofnines](https://open.kattis.com/problems/gameofnines) | [35363](https://solved.ac/problems/35363) | | **K** | Swap for Palindrome | `scusa/2025/swapforpalindrome` | `scusa/2025/scdiv1-1.pdf` | [swapforpalindrome](https://open.kattis.com/problems/swapforpalindrome) | [35364](https://solved.ac/problems/35364) | | **L** | Tree Racing | `scusa/2025/treeracing` | `scusa/2025/scdiv1-1.pdf` | [treeracing](https://open.kattis.com/problems/treeracing) | [35365](https://solved.ac/problems/35365) | | **M** | Much Room for Mushrooms | `scusa/2025/muchroomformushrooms` | `scusa/2025/scdiv1-1.pdf` | [muchroomformushrooms](https://open.kattis.com/problems/muchroomformushrooms) | [35366](https://solved.ac/problems/35366) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------------- | :------------------------------------- | :------------------------- | :-------------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Snakey String | `scusa/2025/snakeystring` | `scusa/2025/seusad2-5.pdf` | [snakeystring](https://open.kattis.com/problems/snakeystring) | [35367](https://solved.ac/problems/35367) | | **B** | Blind Bottles | `scusa/2025/blindbottles` | `scusa/2025/seusad2-5.pdf` | [blindbottles](https://open.kattis.com/problems/blindbottles) | [35355](https://solved.ac/problems/35355) | | **C** | One Way Only | `scusa/2025/onewayonly` | `scusa/2025/seusad2-5.pdf` | [onewayonly](https://open.kattis.com/problems/onewayonly) | [35356](https://solved.ac/problems/35356) | | **D** | GUID Generator | `scusa/2025/guidgenerator` | `scusa/2025/seusad2-5.pdf` | [guidgenerator](https://open.kattis.com/problems/guidgenerator) | [35357](https://solved.ac/problems/35357) | | **E** | Photo Encoding | `scusa/2025/photoencoding` | `scusa/2025/seusad2-5.pdf` | [photoencoding](https://open.kattis.com/problems/photoencoding) | [35358](https://solved.ac/problems/35358) | | **F** | Breakout | `scusa/2025/breakout` | `scusa/2025/seusad2-5.pdf` | [breakout2](https://open.kattis.com/problems/breakout2) | [35368](https://solved.ac/problems/35368) | | **G** | Shinjuku Station | `scusa/2025/shinjukustation` | `scusa/2025/seusad2-5.pdf` | [shinjukustation](https://open.kattis.com/problems/shinjukustation) | [35369](https://solved.ac/problems/35369) | | **H** | Memories of Passport Control | `scusa/2025/memoriesofpassportcontrol` | `scusa/2025/seusad2-5.pdf` | [memoriesofpassportcontrol](https://open.kattis.com/problems/memoriesofpassportcontrol) | [35370](https://solved.ac/problems/35370) | | **I** | Inazuma Cube Device | `scusa/2025/inazumacubedevice` | `scusa/2025/seusad2-5.pdf` | [inazumacubedevice](https://open.kattis.com/problems/inazumacubedevice) | [35371](https://solved.ac/problems/35371) | | **J** | Game of Nines | `scusa/2025/gameofnines` | `scusa/2025/seusad2-5.pdf` | [gameofnines](https://open.kattis.com/problems/gameofnines) | [35363](https://solved.ac/problems/35363) | | **K** | Swap for Palindrome | `scusa/2025/swapforpalindrome` | `scusa/2025/seusad2-5.pdf` | [swapforpalindrome](https://open.kattis.com/problems/swapforpalindrome) | [35364](https://solved.ac/problems/35364) | | **L** | Moonlit Time Machine | `scusa/2025/moonlittimemachine` | `scusa/2025/seusad2-5.pdf` | [moonlittimemachine](https://open.kattis.com/problems/moonlittimemachine) | [35372](https://solved.ac/problems/35372) | | **M** | Much Room for Mushrooms | `scusa/2025/muchroomformushrooms` | `scusa/2025/seusad2-5.pdf` | [muchroomformushrooms](https://open.kattis.com/problems/muchroomformushrooms) | [35366](https://solved.ac/problems/35366) | --- ## Southeastern Europe Regional Contest (2003) - **Contest Slug:** `seerc` - **Year:** 2003 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/31) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------- | :-------------------------------------- | :-------------------------------------------- | :----: | :-------------------------------------: | | **A** | Delta Encoding and Decoding | `seerc/2003/A` | `seerc/2003/A/A.pdf` | - | [3788](https://solved.ac/problems/3788) | | **B** | Hidden Password | `seerc/2003/B` | `seerc/2003/B/B.pdf` | - | [3789](https://solved.ac/problems/3789) | | **C** | Crazy tea party | `seerc/2003/C` | `seerc/2003/C/C.pdf` | - | [3790](https://solved.ac/problems/3790) | | **D** | Supermarket | `seerc/2003/D` | `seerc/2003/D/D.pdf` | - | [2109](https://solved.ac/problems/2109) | | **E** | Lord of the Ring | `seerc/2003/Problems_Complete_ACM_2003` | `seerc/2003/Problems_Complete_ACM_2003/E.pdf` | - | [3792](https://solved.ac/problems/3792) | | **F** | Common Subsequence | `seerc/2003/F` | `seerc/2003/F/F.pdf` | - | [3793](https://solved.ac/problems/3793) | | **G** | Power Network | `seerc/2003/G` | `seerc/2003/G/G.pdf` | - | [3794](https://solved.ac/problems/3794) | | **H** | Firefighters | `seerc/2003/H` | `seerc/2003/H/H.pdf` | - | [3795](https://solved.ac/problems/3795) | | **I** | Binary Polynomials | `seerc/2003/I` | `seerc/2003/I/I.pdf` | - | [3796](https://solved.ac/problems/3796) | --- ## Southeastern Europe Regional Contest (2005) - **Contest Slug:** `seerc` - **Year:** 2005 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/29) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------- | :---------------- | :--------------------- | :----: | :-------------------------------------: | | **A** | Linear world | `seerc/2005/A` | `seerc/2005/A/A.pdf` | - | [3772](https://solved.ac/problems/3772) | | **B** | Songs | `seerc/2005/B` | `seerc/2005/B/B.pdf` | - | [3773](https://solved.ac/problems/3773) | | **C** | Sudoku | `seerc/2005/C` | `seerc/2005/C/C.pdf` | - | [2239](https://solved.ac/problems/2239) | | **D** | Tour | `seerc/2005/D` | `seerc/2005/D/D.pdf` | - | [3774](https://solved.ac/problems/3774) | | **E** | Mothy | `seerc/2005/E` | `seerc/2005/E/E.pdf` | - | [2125](https://solved.ac/problems/2125) | | **F** | Adventurous Driving | `seerc/2005/F` | `seerc/2005/F/F.pdf` | - | [2129](https://solved.ac/problems/2129) | | **G** | Computer Transformation | `seerc/2005/G` | `seerc/2005/G/G.pdf` | - | [3777](https://solved.ac/problems/3777) | | **H** | Anagrammatic Distance | `seerc/2005/H` | `seerc/2005/H/H.pdf` | - | [3778](https://solved.ac/problems/3778) | | **I** | Tomato Automata | `seerc/2005/I` | `seerc/2005/I/I.pdf` | - | [2119](https://solved.ac/problems/2119) | --- ## Southeastern Europe Regional Contest (2006) - **Contest Slug:** `seerc` - **Year:** 2006 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/28) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------- | :------------------------ | :------------------------------ | :----: | :-------------------------------------: | | **A** | Sudoku | `seerc/2006/A` | `seerc/2006/A/a.pdf` | - | [3763](https://solved.ac/problems/3763) | | **B** | Subsequence | `seerc/2006/B` | `seerc/2006/B/b.pdf` | - | [1806](https://solved.ac/problems/1806) | | **C** | Celebrity jeopardy | `seerc/2006/C` | `seerc/2006/C/c.pdf` | - | [3765](https://solved.ac/problems/3765) | | **D** | Sherlock Holmes | `seerc/2006/D` | `seerc/2006/D/d.pdf` | - | [3766](https://solved.ac/problems/3766) | | **E** | Payment System | `seerc/2006/E` | `seerc/2006/E/e.pdf` | - | [3767](https://solved.ac/problems/3767) | | **F** | Stargates | `seerc/2006/Problems PDF` | `seerc/2006/Problems PDF/f.pdf` | - | [3768](https://solved.ac/problems/3768) | | **G** | Maximum | `seerc/2006/G` | `seerc/2006/G/g.pdf` | - | [3769](https://solved.ac/problems/3769) | | **H** | Japan | `seerc/2006/H` | `seerc/2006/H/h.pdf` | - | [3770](https://solved.ac/problems/3770) | | **I** | "Shortest" pair of paths | `seerc/2006/I` | `seerc/2006/I/i.pdf` | - | [3771](https://solved.ac/problems/3771) | --- ## Southeastern Europe Regional Contest (2007) - **Contest Slug:** `seerc` - **Year:** 2007 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/27) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------- | :---------------- | :--------------------- | :----: | :-------------------------------------: | | **A** | John | `seerc/2007/A` | `seerc/2007/A/a.pdf` | - | [3754](https://solved.ac/problems/3754) | | **B** | Double Queue | `seerc/2007/B` | `seerc/2007/B/b.pdf` | - | [3755](https://solved.ac/problems/3755) | | **C** | 'JBC' | `seerc/2007/C` | `seerc/2007/C/c.pdf` | - | [3756](https://solved.ac/problems/3756) | | **D** | Loan Scheduling | `seerc/2007/D` | `seerc/2007/D/d.pdf` | - | [3757](https://solved.ac/problems/3757) | | **E** | Showstopper | `seerc/2007/E` | `seerc/2007/E/e.pdf` | - | [1637](https://solved.ac/problems/1637) | | **F** | Highway | `seerc/2007/F` | `seerc/2007/F/f.pdf` | - | [3759](https://solved.ac/problems/3759) | | **G** | Computers | `seerc/2007/G` | `seerc/2007/G/g.pdf` | - | [3760](https://solved.ac/problems/3760) | | **H** | The Stable Marriage Problem | `seerc/2007/H` | `seerc/2007/H/h.pdf` | - | [3761](https://solved.ac/problems/3761) | | **I** | Arne Saknussemm | `seerc/2007/I` | `seerc/2007/I/i.pdf` | - | [3762](https://solved.ac/problems/3762) | --- ## Southeastern Europe Regional Contest (2008) - **Contest Slug:** `seerc` - **Year:** 2008 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/26) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :---------------- | :--------------------- | :----: | :-------------------------------------: | | **A** | Stock Exchange | `seerc/2008/A` | `seerc/2008/A/A.pdf` | - | [3745](https://solved.ac/problems/3745) | | **B** | Sky Code | `seerc/2008/B` | `seerc/2008/B/B.pdf` | - | [3746](https://solved.ac/problems/3746) | | **C** | Perfect Election | `seerc/2008/C` | `seerc/2008/C/C.pdf` | - | [3747](https://solved.ac/problems/3747) | | **D** | Lucky cities | `seerc/2008/D` | `seerc/2008/D/D.pdf` | - | [3748](https://solved.ac/problems/3748) | | **E** | Build Your Home | `seerc/2008/E` | `seerc/2008/E/E.pdf` | - | [3749](https://solved.ac/problems/3749) | | **F** | Quick answer | `seerc/2008/F` | `seerc/2008/F/F.pdf` | - | [3750](https://solved.ac/problems/3750) | | **G** | Lucky numbers | `seerc/2008/G` | `seerc/2008/G/G.pdf` | - | [3751](https://solved.ac/problems/3751) | | **H** | GCD Determinant | `seerc/2008/H` | `seerc/2008/H/H.pdf` | - | [3752](https://solved.ac/problems/3752) | | **I** | Internet Service Providers | `seerc/2008/I` | `seerc/2008/I/I.pdf` | - | [3753](https://solved.ac/problems/3753) | --- ## Southeastern Europe Regional Contest (2009) - **Contest Slug:** `seerc` - **Year:** 2009 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/25) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------------- | :---------------- | :--------------------- | :----: | :-------------------------------------: | | **A** | RSA Factorization | `seerc/2009/A` | `seerc/2009/A/A.pdf` | - | [3734](https://solved.ac/problems/3734) | | **B** | Hard-working Student | `seerc/2009/B` | `seerc/2009/B/B.pdf` | - | [3735](https://solved.ac/problems/3735) | | **C** | System Engineer | `seerc/2009/C` | `seerc/2009/C/C.pdf` | - | [3736](https://solved.ac/problems/3736) | | **D** | Cycles of Lanes | `seerc/2009/D` | `seerc/2009/D/D.pdf` | - | [3737](https://solved.ac/problems/3737) | | **E** | Multiprocessor Scheduling | `seerc/2009/E` | `seerc/2009/E/E.pdf` | - | [3738](https://solved.ac/problems/3738) | | **F** | Maze Stretching | `seerc/2009/F` | `seerc/2009/F/F.pdf` | - | [3739](https://solved.ac/problems/3739) | | **G** | Software Industry Revolution | `seerc/2009/G` | `seerc/2009/G/G.pdf` | - | [3740](https://solved.ac/problems/3740) | | **H** | The Lucky Numbers | `seerc/2009/H` | `seerc/2009/H/H.pdf` | - | [3741](https://solved.ac/problems/3741) | | **I** | The Robbery | `seerc/2009/I` | `seerc/2009/I/I.pdf` | - | [3742](https://solved.ac/problems/3742) | | **J** | The Computer Game | `seerc/2009/J` | `seerc/2009/J/J.pdf` | - | [3743](https://solved.ac/problems/3743) | | **K** | The Bad Number | `seerc/2009/K` | `seerc/2009/K/K.pdf` | - | [3744](https://solved.ac/problems/3744) | --- ## Southeastern Europe Regional Contest (2010) - **Contest Slug:** `seerc` - **Year:** 2010 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/24) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------------- | :---------------- | :--------------------- | :----: | :-------------------------------------: | | **A** | The Table | `seerc/2010/A` | `seerc/2010/A/A.pdf` | - | [3724](https://solved.ac/problems/3724) | | **B** | Calculator | `seerc/2010/B` | `seerc/2010/B/B.pdf` | - | [3725](https://solved.ac/problems/3725) | | **C** | Largest Empty Circle on a Segment | `seerc/2010/C` | `seerc/2010/C/C.pdf` | - | [3726](https://solved.ac/problems/3726) | | **D** | Problemsetting | `seerc/2010/D` | `seerc/2010/D/D.pdf` | - | [3727](https://solved.ac/problems/3727) | | **E** | Control Points | `seerc/2010/E` | `seerc/2010/E/E.pdf` | - | [3728](https://solved.ac/problems/3728) | | **F** | Gamers | `seerc/2010/F` | `seerc/2010/F/F.pdf` | - | [3729](https://solved.ac/problems/3729) | | **G** | Cosmic Station | `seerc/2010/G` | `seerc/2010/G/G.pdf` | - | [3730](https://solved.ac/problems/3730) | | **H** | Game | `seerc/2010/H` | `seerc/2010/H/H.pdf` | - | [3731](https://solved.ac/problems/3731) | | **I** | Proof Generator | `seerc/2010/I` | `seerc/2010/I/I.pdf` | - | [3732](https://solved.ac/problems/3732) | | **J** | Shares | `seerc/2010/J` | `seerc/2010/J/J.pdf` | - | [3733](https://solved.ac/problems/3733) | --- ## Southeastern Europe Regional Contest (2011) - **Contest Slug:** `seerc` - **Year:** 2011 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/23) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------- | :---------------- | :--------------------- | :----: | :-------------------------------------: | | **A** | Secret — MAX | `seerc/2011/A` | `seerc/2011/A/A.pdf` | - | [3715](https://solved.ac/problems/3715) | | **B** | Safety Grade | `seerc/2011/B` | `seerc/2011/B/B.pdf` | - | [3716](https://solved.ac/problems/3716) | | **C** | Search by template | `seerc/2011/C` | `seerc/2011/C/C.pdf` | - | [3717](https://solved.ac/problems/3717) | | **D** | Roots Intervals | `seerc/2011/D` | `seerc/2011/D/D.pdf` | - | [3718](https://solved.ac/problems/3718) | | **E** | Palindromic Dates | `seerc/2011/E` | `seerc/2011/E/E.pdf` | - | [3719](https://solved.ac/problems/3719) | | **F** | Post Offices | `seerc/2011/F` | `seerc/2011/F/F.pdf` | - | - | | **G** | Choosing a camera | `seerc/2011/G` | `seerc/2011/G/G.pdf` | - | [3720](https://solved.ac/problems/3720) | | **H** | Road Planner | `seerc/2011/H` | `seerc/2011/H/H.pdf` | - | [3721](https://solved.ac/problems/3721) | | **I** | Term Generator | `seerc/2011/I` | `seerc/2011/I/I.pdf` | - | [3722](https://solved.ac/problems/3722) | | **J** | Painting | `seerc/2011/J` | `seerc/2011/J/J.pdf` | - | [3723](https://solved.ac/problems/3723) | --- ## Southeastern Europe Regional Contest (2012) - **Contest Slug:** `seerc` - **Year:** 2012 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/22) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :---------------- | :--------------------- | :----: | :---------------------------------------: | | **A** | Dr Who's Banquet | `seerc/2012/A` | `seerc/2012/A/A.pdf` | - | [11421](https://solved.ac/problems/11421) | | **B** | Bitris | `seerc/2012/B` | `seerc/2012/B/B.pdf` | - | [11422](https://solved.ac/problems/11422) | | **C** | Primes | `seerc/2012/C` | `seerc/2012/C/C.pdf` | - | [11423](https://solved.ac/problems/11423) | | **D** | Longest Prefix Match | `seerc/2012/D` | `seerc/2012/D/D.pdf` | - | [11424](https://solved.ac/problems/11424) | | **E** | Stripe | `seerc/2012/E` | `seerc/2012/E/E.pdf` | - | [11425](https://solved.ac/problems/11425) | | **F** | Maximal Number of Divisors | `seerc/2012/F` | `seerc/2012/F/F.pdf` | - | [11426](https://solved.ac/problems/11426) | | **G** | Miraculous Drug | `seerc/2012/G` | `seerc/2012/G/G.pdf` | - | [11427](https://solved.ac/problems/11427) | | **H** | Softville | `seerc/2012/H` | `seerc/2012/H/H.pdf` | - | [11428](https://solved.ac/problems/11428) | | **I** | Tree | `seerc/2012/I` | `seerc/2012/I/I.pdf` | - | [11429](https://solved.ac/problems/11429) | | **J** | VAN DINSKY | `seerc/2012/J` | `seerc/2012/J/J.pdf` | - | [11430](https://solved.ac/problems/11430) | --- ## Southeastern Europe Regional Contest (2013) - **Contest Slug:** `seerc` - **Year:** 2013 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1149) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------- | :---------------- | :--------------------------- | :----: | :-------------------------------------: | | **H** | H1:H10 => 0,500 | `seerc/2013/H` | `seerc/2013/Time Limits.pdf` | - | [9270](https://solved.ac/problems/9270) | | **I** | I1:I12 => 0,500 | `seerc/2013/I` | `seerc/2013/Time Limits.pdf` | - | [9271](https://solved.ac/problems/9271) | | **J** | J1:J5 => 0,500 | `seerc/2013/J` | `seerc/2013/Time Limits.pdf` | - | [9272](https://solved.ac/problems/9272) | --- ## Southeastern Europe Regional Contest (2014) - **Contest Slug:** `seerc` - **Year:** 2014 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1293) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------------------- | :---------------- | :--------------------- | :----: | :---------------------------------------: | | **A** | Banks | `seerc/2014/A` | `seerc/2014/A/A.pdf` | - | [10350](https://solved.ac/problems/10350) | | **B** | Circle of digits | `seerc/2014/B` | `seerc/2014/B/B.pdf` | - | [10351](https://solved.ac/problems/10351) | | **C** | UFO | `seerc/2014/C` | `seerc/2014/C/C.pdf` | - | [10352](https://solved.ac/problems/10352) | | **D** | Frame | `seerc/2014/D` | `seerc/2014/D/D.pdf` | - | [10353](https://solved.ac/problems/10353) | | **E** | Points | `seerc/2014/E` | `seerc/2014/E/E.pdf` | - | [10354](https://solved.ac/problems/10354) | | **F** | Most Influential Pumpkin | `seerc/2014/F` | `seerc/2014/F/F.pdf` | - | [10355](https://solved.ac/problems/10355) | | **G** | Grammar | `seerc/2014/G` | `seerc/2014/G/G.pdf` | - | [10356](https://solved.ac/problems/10356) | | **H** | Triples | `seerc/2014/H` | `seerc/2014/H/H.pdf` | - | [10357](https://solved.ac/problems/10357) | | **I** | Multi-Machine Scheduling of Two Applications | `seerc/2014/I` | `seerc/2014/I/I.pdf` | - | [10358](https://solved.ac/problems/10358) | | **J** | Strange Antennas | `seerc/2014/J` | `seerc/2014/J/J.pdf` | - | [10359](https://solved.ac/problems/10359) | --- ## Southeastern Europe Regional Contest (2015) - **Contest Slug:** `seerc` - **Year:** 2015 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1407) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :---------------- | :--------------------- | :----: | :---------------------------------------: | | **A** | Equivalence | `seerc/2015/A` | - | - | [11411](https://solved.ac/problems/11411) | | **B** | Tree of Almost Clean Money | `seerc/2015/B` | `seerc/2015/B/B.pdf` | - | [11412](https://solved.ac/problems/11412) | | **C** | Primes | `seerc/2015/C` | `seerc/2015/C/C.pdf` | - | [11413](https://solved.ac/problems/11413) | | **D** | LCM | `seerc/2015/D` | `seerc/2015/D/D.pdf` | - | [11414](https://solved.ac/problems/11414) | | **E** | Taxies | `seerc/2015/E` | `seerc/2015/E/E.pdf` | - | [11415](https://solved.ac/problems/11415) | | **F** | Irrational Roots | `seerc/2015/F` | `seerc/2015/F/F.pdf` | - | [11416](https://solved.ac/problems/11416) | | **G** | Race | `seerc/2015/G` | `seerc/2015/G/G.pdf` | - | [11417](https://solved.ac/problems/11417) | | **H** | Railway Tickets | `seerc/2015/H` | `seerc/2015/H/H.pdf` | - | [11418](https://solved.ac/problems/11418) | | **I** | Olympic Parade | `seerc/2015/I` | `seerc/2015/I/I.pdf` | - | [11419](https://solved.ac/problems/11419) | | **J** | Word by mouth | `seerc/2015/J` | `seerc/2015/J/J.pdf` | - | [11420](https://solved.ac/problems/11420) | --- ## Southeastern Europe Regional Contest (2016) - **Contest Slug:** `seerc` - **Year:** 2016 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1571) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------- | :---------------- | :------------------------------- | :----: | :---------------------------------------: | | **A** | Three Squares | `seerc/2016/A` | `seerc/2016/acm2016problems.pdf` | - | [13855](https://solved.ac/problems/13855) | | **B** | Favorite music | `seerc/2016/B` | `seerc/2016/acm2016problems.pdf` | - | [13856](https://solved.ac/problems/13856) | | **C** | Castle | `seerc/2016/C` | `seerc/2016/acm2016problems.pdf` | - | [13857](https://solved.ac/problems/13857) | | **D** | Reading Digits | `seerc/2016/D` | `seerc/2016/acm2016problems.pdf` | - | [13858](https://solved.ac/problems/13858) | | **E** | Exam | `seerc/2016/E` | `seerc/2016/acm2016problems.pdf` | - | [13859](https://solved.ac/problems/13859) | | **F** | Letters | `seerc/2016/F` | `seerc/2016/acm2016problems.pdf` | - | [13860](https://solved.ac/problems/13860) | | **G** | Pokemons | `seerc/2016/G` | `seerc/2016/acm2016problems.pdf` | - | [13861](https://solved.ac/problems/13861) | | **H** | Pub crawl | `seerc/2016/H` | `seerc/2016/acm2016problems.pdf` | - | [13862](https://solved.ac/problems/13862) | | **I** | Cubes | `seerc/2016/I` | `seerc/2016/acm2016problems.pdf` | - | [13863](https://solved.ac/problems/13863) | | **J** | Marathon | `seerc/2016/J` | `seerc/2016/acm2016problems.pdf` | - | [13864](https://solved.ac/problems/13864) | | **K** | Cutting | `seerc/2016/K` | `seerc/2016/acm2016problems.pdf` | - | [13865](https://solved.ac/problems/13865) | --- ## Southeast USA Regional Contest (2008) - **Contest Slug:** `ser` - **Year:** 2008 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/180) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------------------- | :------------------ | :--------------------------------- | :----: | :-------------------------------------: | | **A** | Series / Parallel Resistor Circuits | `ser/2008/circuits` | `ser/2008/SER2008 Problem Set.pdf` | - | [4113](https://solved.ac/problems/4113) | | **B** | The Heart of the Country | `ser/2008/heart` | `ser/2008/SER2008 Problem Set.pdf` | - | [4114](https://solved.ac/problems/4114) | | **C** | Lawrence of Arabia | `ser/2008/lawrence` | `ser/2008/SER2008 Problem Set.pdf` | - | [4115](https://solved.ac/problems/4115) | | **D** | Shoring Up the Levees | `ser/2008/levees` | `ser/2008/SER2008 Problem Set.pdf` | - | [4116](https://solved.ac/problems/4116) | | **E** | Combination Lock | `ser/2008/lock` | `ser/2008/SER2008 Problem Set.pdf` | - | [4117](https://solved.ac/problems/4117) | | **F** | Fred's Lotto Tickets | `ser/2008/lotto` | `ser/2008/SER2008 Problem Set.pdf` | - | [4118](https://solved.ac/problems/4118) | | **G** | A No-Win Situation | `ser/2008/nowin` | `ser/2008/SER2008 Problem Set.pdf` | - | [4119](https://solved.ac/problems/4119) | | **H** | A Walk in the Park | `ser/2008/park` | `ser/2008/SER2008 Problem Set.pdf` | - | [4120](https://solved.ac/problems/4120) | | **I** | Teleport Out! | `ser/2008/teleport` | `ser/2008/SER2008 Problem Set.pdf` | - | [4121](https://solved.ac/problems/4121) | | **J** | Worms | `ser/2008/worms` | `ser/2008/SER2008 Problem Set.pdf` | - | [4122](https://solved.ac/problems/4122) | --- ## Southeast USA Regional Contest (2009) - **Contest Slug:** `ser` - **Year:** 2009 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/179) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------- | :------------------------ | :---------------------------------- | :----: | :-------------------------------------: | | **A** | Block Game | `ser/2009/blockgame` | `ser/2009/SER 2009 Problem Set.pdf` | - | [4104](https://solved.ac/problems/4104) | | **B** | Euclid | `ser/2009/euclid` | `ser/2009/SER 2009 Problem Set.pdf` | - | [4105](https://solved.ac/problems/4105) | | **C** | Museum Guards | `ser/2009/guards` | `ser/2009/SER 2009 Problem Set.pdf` | - | [4106](https://solved.ac/problems/4106) | | **D** | Knitting | `ser/2009/knitting` | `ser/2009/SER 2009 Problem Set.pdf` | - | [4107](https://solved.ac/problems/4107) | | **E** | Minesweeper | `ser/2009/minesweeper` | `ser/2009/SER 2009 Problem Set.pdf` | - | [4108](https://solved.ac/problems/4108) | | **F** | The Ninja Way | `ser/2009/ninjaway` | `ser/2009/SER 2009 Problem Set.pdf` | - | [4109](https://solved.ac/problems/4109) | | **G** | Pool Table | `ser/2009/pooltable` | `ser/2009/SER 2009 Problem Set.pdf` | - | [4110](https://solved.ac/problems/4110) | | **H** | Robot Challenge | `ser/2009/robotchallenge` | `ser/2009/SER 2009 Problem Set.pdf` | - | [4111](https://solved.ac/problems/4111) | | **I** | Mosaic | `ser/2009/mosaic` | `ser/2009/SER 2009 Problem Set.pdf` | - | [4112](https://solved.ac/problems/4112) | --- ## Southeast USA Regional Contest (2010) - **Contest Slug:** `ser` - **Year:** 2010 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/178) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------- | :--------------------------- | :---------------------------------- | :----: | :-------------------------------------: | | **A** | Balloons | `ser/2010/balloons` | `ser/2010/SER 2010 Problem Set.pdf` | - | [4091](https://solved.ac/problems/4091) | | **B** | Bit Counting | `ser/2010/bitcounting` | `ser/2010/SER 2010 Problem Set.pdf` | - | [4092](https://solved.ac/problems/4092) | | **C** | Data Recovery | `ser/2010/datarecovery` | `ser/2010/SER 2010 Problem Set.pdf` | - | [4093](https://solved.ac/problems/4093) | | **D** | Equal Angles | `ser/2010/equalangles` | `ser/2010/SER 2010 Problem Set.pdf` | - | [4094](https://solved.ac/problems/4094) | | **E** | Maximum Square | `ser/2010/maximumsquare` | `ser/2010/SER 2010 Problem Set.pdf` | - | [4095](https://solved.ac/problems/4095) | | **F** | Palindrometer | `ser/2010/palindrometer` | `ser/2010/SER 2010 Problem Set.pdf` | - | [4096](https://solved.ac/problems/4096) | | **G** | Profits | `ser/2010/profits` | `ser/2010/SER 2010 Problem Set.pdf` | - | [4097](https://solved.ac/problems/4097) | | **H** | Roller Coaster | `ser/2010/rollercoaster` | `ser/2010/SER 2010 Problem Set.pdf` | - | [4098](https://solved.ac/problems/4098) | | **I** | Skyline | `ser/2010/skyline` | `ser/2010/SER 2010 Problem Set.pdf` | - | [4099](https://solved.ac/problems/4099) | | **J** | Underground Cables | `ser/2010/undergroundcables` | `ser/2010/SER 2010 Problem Set.pdf` | - | [4100](https://solved.ac/problems/4100) | --- ## Southeast USA Regional Contest (2011) - **Contest Slug:** `ser` - **Year:** 2011 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/177) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------ | :------------------------- | :---------------------------------- | :----: | :-------------------------------------: | | **A** | Sunday Drive | `ser/2011/sundaydrive` | `ser/2011/SER 2011 Problem Set.pdf` | - | [4081](https://solved.ac/problems/4081) | | **B** | Hexagram | `ser/2011/hexagram` | `ser/2011/SER 2011 Problem Set.pdf` | - | [4082](https://solved.ac/problems/4082) | | **C** | Flooring Tiles | `ser/2011/flooringtiles` | `ser/2011/SER 2011 Problem Set.pdf` | - | [4083](https://solved.ac/problems/4083) | | **D** | Vive la Difference! | `ser/2011/difference` | `ser/2011/SER 2011 Problem Set.pdf` | - | [4084](https://solved.ac/problems/4084) | | **E** | Robot Navigation | `ser/2011/robotnavigation` | `ser/2011/SER 2011 Problem Set.pdf` | - | [4085](https://solved.ac/problems/4085) | | **F** | Folding Game | `ser/2011/folding` | `ser/2011/SER 2011 Problem Set.pdf` | - | [4086](https://solved.ac/problems/4086) | | **G** | Burnout | `ser/2011/burnout` | `ser/2011/SER 2011 Problem Set.pdf` | - | [4087](https://solved.ac/problems/4087) | | **H** | Family Fortune | `ser/2011/family` | `ser/2011/SER 2011 Problem Set.pdf` | - | [4088](https://solved.ac/problems/4088) | | **I** | Moving Points | `ser/2011/movingpoints` | `ser/2011/SER 2011 Problem Set.pdf` | - | [4089](https://solved.ac/problems/4089) | | **J** | Vampire Numbers | `ser/2011/vampirenumbers` | `ser/2011/SER 2011 Problem Set.pdf` | - | [4090](https://solved.ac/problems/4090) | --- ## Southeast USA Regional Contest (2012) - **Contest Slug:** `ser` - **Year:** 2012 - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/176) | [Div 2](https://solved.ac/problems/archive/contest/1760) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------ | :----------------------------- | :------------------------------------------------ | :----: | :---------------------------------------: | | **A** | Candy Store | `ser/2012/candystore` | `ser/2012/SER 2012 Problem Set - Division I.pdf` | - | [4781](https://solved.ac/problems/4781) | | **B** | Collision Detection | `ser/2012/collisiondetection` | `ser/2012/SER 2012 Problem Set - Division I.pdf` | - | [4699](https://solved.ac/problems/4699) | | **C** | Component Testing | `ser/2012/componenttesting` | `ser/2012/SER 2012 Problem Set - Division I.pdf` | - | [4698](https://solved.ac/problems/4698) | | **D** | Do It Wrong, Get It Right | `ser/2012/doitwrong` | `ser/2012/SER 2012 Problem Set - Division I.pdf` | - | [4782](https://solved.ac/problems/4782) | | **E** | Funhouse | `ser/2012/funhouse` | `ser/2012/SER 2012 Problem Set - Division I.pdf` | - | [4702](https://solved.ac/problems/4702) | | **F** | A Terribly Grimm Problem | `ser/2012/grimm` | `ser/2012/SER 2012 Problem Set - Division I.pdf` | - | [4703](https://solved.ac/problems/4703) | | **G** | Heads or Tails | `ser/2012/headsortails` | `ser/2012/SER 2012 Problem Set - Division I.pdf` | - | [4783](https://solved.ac/problems/4783) | | **H** | Tsunami | `ser/2012/tsunami` | `ser/2012/SER 2012 Problem Set - Division I.pdf` | - | [4704](https://solved.ac/problems/4704) | | **I** | Unhappy Numbers | `ser/2012/unhappy` | `ser/2012/SER 2012 Problem Set - Division I.pdf` | - | [4784](https://solved.ac/problems/4784) | | **J** | Walls | `ser/2012/walls` | `ser/2012/SER 2012 Problem Set - Division I.pdf` | - | [4785](https://solved.ac/problems/4785) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------ | :----------------------------- | :------------------------------------------------ | :----: | :---------------------------------------: | | **A** | Candy Store | `ser/2012/candystore` | `ser/2012/SER 2012 Problem Set - Division II.pdf` | - | [4781](https://solved.ac/problems/4781) | | **B** | Collision Detection | `ser/2012/collisiondetection` | `ser/2012/SER 2012 Problem Set - Division II.pdf` | - | [4699](https://solved.ac/problems/4699) | | **C** | Do It Wrong, Get It Right | `ser/2012/doitwrong` | `ser/2012/SER 2012 Problem Set - Division II.pdf` | - | [4782](https://solved.ac/problems/4782) | | **D** | Dueling Philosophers | `ser/2012/duelingphilosophers` | `ser/2012/SER 2012 Problem Set - Division II.pdf` | - | [14757](https://solved.ac/problems/14757) | | **E** | Paint Me | `ser/2012/paintme` | `ser/2012/SER 2012 Problem Set - Division II.pdf` | - | [14758](https://solved.ac/problems/14758) | | **F** | Party Games | `ser/2012/partygames` | `ser/2012/SER 2012 Problem Set - Division II.pdf` | - | [14759](https://solved.ac/problems/14759) | | **G** | Reverse Nonogram | `ser/2012/reversenonogram` | `ser/2012/SER 2012 Problem Set - Division II.pdf` | - | [14760](https://solved.ac/problems/14760) | | **H** | Tsunami | `ser/2012/tsunami` | `ser/2012/SER 2012 Problem Set - Division II.pdf` | - | [4704](https://solved.ac/problems/4704) | | **I** | Unhappy Numbers | `ser/2012/unhappy` | `ser/2012/SER 2012 Problem Set - Division II.pdf` | - | [4784](https://solved.ac/problems/4784) | | **J** | Walls | `ser/2012/walls` | `ser/2012/SER 2012 Problem Set - Division II.pdf` | - | [4785](https://solved.ac/problems/4785) | --- ## Southeast USA Regional Contest (2013) - **Contest Slug:** `ser` - **Year:** 2013 - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/1171) | [Div 2](https://solved.ac/problems/archive/contest/1172) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------- | :--------------------- | :---------------------------------------- | :----: | :-------------------------------------: | | **A** | Beautiful Mountains | `ser/2013/mountains` | `ser/2013/SER-2013-Div-1-Problem-Set.pdf` | - | [9477](https://solved.ac/problems/9477) | | **B** | Nested Palindromes | `ser/2013/nested` | `ser/2013/SER-2013-Div-1-Problem-Set.pdf` | - | [9478](https://solved.ac/problems/9478) | | **C** | Ping! | `ser/2013/ping` | `ser/2013/SER-2013-Div-1-Problem-Set.pdf` | - | [9479](https://solved.ac/problems/9479) | | **D** | Electric Car Rally | `ser/2013/rally` | `ser/2013/SER-2013-Div-1-Problem-Set.pdf` | - | [9480](https://solved.ac/problems/9480) | | **E** | Skyscrapers | `ser/2013/skyscrapers` | `ser/2013/SER-2013-Div-1-Problem-Set.pdf` | - | [9481](https://solved.ac/problems/9481) | | **F** | Star Simulations | `ser/2013/stars` | `ser/2013/SER-2013-Div-1-Problem-Set.pdf` | - | [9482](https://solved.ac/problems/9482) | | **G** | Tandem Repeats | `ser/2013/tandem` | `ser/2013/SER-2013-Div-1-Problem-Set.pdf` | - | [9483](https://solved.ac/problems/9483) | | **H** | Triangles | `ser/2013/triangles` | `ser/2013/SER-2013-Div-1-Problem-Set.pdf` | - | [9484](https://solved.ac/problems/9484) | | **I** | It Takes a Village | `ser/2013/village` | `ser/2013/SER-2013-Div-1-Problem-Set.pdf` | - | [9485](https://solved.ac/problems/9485) | | **J** | You Win! | `ser/2013/youwin` | `ser/2013/SER-2013-Div-1-Problem-Set.pdf` | - | [9486](https://solved.ac/problems/9486) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------- | :--------------------- | :---------------------------------------- | :----: | :-------------------------------------: | | **A** | Cut the Cake | `ser/2013/cake` | `ser/2013/SER-2013-Div-2-Problem-Set.pdf` | - | [9487](https://solved.ac/problems/9487) | | **B** | The n Days of Christmas | `ser/2013/christmas` | `ser/2013/SER-2013-Div-2-Problem-Set.pdf` | - | [9488](https://solved.ac/problems/9488) | | **C** | Ping! | `ser/2013/ping` | `ser/2013/SER-2013-Div-2-Problem-Set.pdf` | - | [9479](https://solved.ac/problems/9479) | | **D** | Electric Car Rally | `ser/2013/rally` | `ser/2013/SER-2013-Div-2-Problem-Set.pdf` | - | [9480](https://solved.ac/problems/9480) | | **E** | Count your Cousins | `ser/2013/cousins` | `ser/2013/SER-2013-Div-2-Problem-Set.pdf` | - | [9489](https://solved.ac/problems/9489) | | **F** | Decimal Representation | `ser/2013/decimal` | `ser/2013/SER-2013-Div-2-Problem-Set.pdf` | - | [9490](https://solved.ac/problems/9490) | | **G** | Politics | `ser/2013/politics` | `ser/2013/SER-2013-Div-2-Problem-Set.pdf` | - | [9491](https://solved.ac/problems/9491) | | **H** | Perfect Shuffle | `ser/2013/shuffle` | `ser/2013/SER-2013-Div-2-Problem-Set.pdf` | - | [9492](https://solved.ac/problems/9492) | | **I** | Speed Can Cost You | `ser/2013/speed` | `ser/2013/SER-2013-Div-2-Problem-Set.pdf` | - | [9493](https://solved.ac/problems/9493) | | **J** | Text Roll | `ser/2013/textroll` | `ser/2013/SER-2013-Div-2-Problem-Set.pdf` | - | [9494](https://solved.ac/problems/9494) | --- ## Southeast USA Regional Contest (2014) - **Contest Slug:** `ser` - **Year:** 2014 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2014%20Southeast%20USA%20Regionals%20Division%201) - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/1388) | [Div 2](https://solved.ac/problems/archive/contest/1389) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------- | :--------------------- | :---------------------------------- | :-------------------------------------------------------------------: | :---------------------------------------: | | **A** | Alchemy | `ser/2014/alchemy` | `ser/2014/SER-2014-D1-Problems.pdf` | [alchemy](https://open.kattis.com/problems/alchemy) | [10558](https://solved.ac/problems/10558) | | **B** | Stained Carpet | `ser/2014/carpet` | `ser/2014/SER-2014-D1-Problems.pdf` | [carpet](https://open.kattis.com/problems/carpet) | [11233](https://solved.ac/problems/11233) | | **C** | Containment | `ser/2014/containment` | `ser/2014/SER-2014-D1-Problems.pdf` | [containment](https://open.kattis.com/problems/containment) | [10559](https://solved.ac/problems/10559) | | **D** | Gold Leaf | `ser/2014/goldleaf` | `ser/2014/SER-2014-D1-Problems.pdf` | [goldleaf](https://open.kattis.com/problems/goldleaf) | [10572](https://solved.ac/problems/10572) | | **E** | Hill Number | `ser/2014/hillnumbers` | `ser/2014/SER-2014-D1-Problems.pdf` | [hillnumbers](https://open.kattis.com/problems/hillnumbers) | [10561](https://solved.ac/problems/10561) | | **F** | Knights | `ser/2014/knights` | `ser/2014/SER-2014-D1-Problems.pdf` | [knights](https://open.kattis.com/problems/knights) | [10562](https://solved.ac/problems/10562) | | **G** | Word Ladder | `ser/2014/ladder` | `ser/2014/SER-2014-D1-Problems.pdf` | [wordladder2](https://open.kattis.com/problems/wordladder2) | [11231](https://solved.ac/problems/11231) | | **H** | Shuffles | `ser/2014/shuffles` | `ser/2014/SER-2014-D1-Problems.pdf` | [shuffles](https://open.kattis.com/problems/shuffles) | [11232](https://solved.ac/problems/11232) | | **I** | Stamp Stamp | `ser/2014/stampstamp` | `ser/2014/SER-2014-D1-Problems.pdf` | [stampstamp](https://open.kattis.com/problems/stampstamp) | [10566](https://solved.ac/problems/10566) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------- | :--------------------- | :---------------------------------- | :-------------------------------------------------------------------: | :---------------------------------------: | | **A** | Stained Carpet | `ser/2014/carpet` | `ser/2014/SER-2014-D2-Problems.pdf` | [carpet](https://open.kattis.com/problems/carpet) | [11233](https://solved.ac/problems/11233) | | **B** | Gold Leaf | `ser/2014/goldleaf` | `ser/2014/SER-2014-D2-Problems.pdf` | [goldleaf](https://open.kattis.com/problems/goldleaf) | [10572](https://solved.ac/problems/10572) | | **C** | Hill Number | `ser/2014/hillnumbers` | `ser/2014/SER-2014-D2-Problems.pdf` | [hillnumbers](https://open.kattis.com/problems/hillnumbers) | [10561](https://solved.ac/problems/10561) | | **D** | Knight Moves | `ser/2014/knightmoves` | `ser/2014/SER-2014-D2-Problems.pdf` | - | [9781](https://solved.ac/problems/9781) | | **E** | Marble Madness | `ser/2014/marbles` | `ser/2014/SER-2014-D2-Problems.pdf` | - | [11234](https://solved.ac/problems/11234) | | **F** | Polling | `ser/2014/polling` | `ser/2014/SER-2014-D2-Problems.pdf` | - | [11235](https://solved.ac/problems/11235) | | **G** | Runes | `ser/2014/runes` | `ser/2014/SER-2014-D2-Problems.pdf` | - | [10557](https://solved.ac/problems/10557) | | **H** | Shuffles | `ser/2014/shuffles` | `ser/2014/SER-2014-D2-Problems.pdf` | [shuffles](https://open.kattis.com/problems/shuffles) | [11232](https://solved.ac/problems/11232) | | **I** | Top 25 | `ser/2014/top25` | `ser/2014/SER-2014-D2-Problems.pdf` | - | [10575](https://solved.ac/problems/10575) | --- ## Southeast USA Regional Contest (2015) - **Contest Slug:** `ser` - **Year:** 2015 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2015%20Southeast%20USA%20Regionals%20Division%201) - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/1429) | [Div 2](https://solved.ac/problems/archive/contest/1430) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------- | :----------------------- | :---------------------------------- | :-------------------------------------------------------------: | :---------------------------------------: | | **A** | Airports | `ser/2015/airports` | `ser/2015/SER-2015-Problems-D1.pdf` | [airports](https://open.kattis.com/problems/airports) | [11593](https://solved.ac/problems/11593) | | **B** | Checkers | `ser/2015/checkers` | `ser/2015/SER-2015-Problems-D1.pdf` | [checkers](https://open.kattis.com/problems/checkers) | [11647](https://solved.ac/problems/11647) | | **C** | Coverage | `ser/2015/coverage` | `ser/2015/SER-2015-Problems-D1.pdf` | [coverage](https://open.kattis.com/problems/coverage) | [11601](https://solved.ac/problems/11601) | | **D** | Gears | `ser/2015/gears` | `ser/2015/SER-2015-Problems-D1.pdf` | [gears2](https://open.kattis.com/problems/gears2) | [11612](https://solved.ac/problems/11612) | | **E** | Grid | `ser/2015/grid` | `ser/2015/SER-2015-Problems-D1.pdf` | [grid](https://open.kattis.com/problems/grid) | [11607](https://solved.ac/problems/11607) | | **F** | Hilbert Sort | `ser/2015/hilbert` | `ser/2015/SER-2015-Problems-D1.pdf` | [hilbertsort](https://open.kattis.com/problems/hilbertsort) | [11600](https://solved.ac/problems/11600) | | **G** | The Magical 3 | `ser/2015/magical3` | `ser/2015/SER-2015-Problems-D1.pdf` | - | [11643](https://solved.ac/problems/11643) | | **H** | Racing Gems | `ser/2015/racinggems` | `ser/2015/SER-2015-Problems-D1.pdf` | [racinggems](https://open.kattis.com/problems/racinggems) | [11599](https://solved.ac/problems/11599) | | **I** | Simplicity | `ser/2015/simplicity` | `ser/2015/SER-2015-Problems-D1.pdf` | [simplicity](https://open.kattis.com/problems/simplicity) | [11608](https://solved.ac/problems/11608) | | **J** | Weightlifting | `ser/2015/weightlifting` | `ser/2015/SER-2015-Problems-D1.pdf` | [weightlifting](https://open.kattis.com/problems/weightlifting) | [11602](https://solved.ac/problems/11602) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------- | :----------------------- | :---------------------------------- | :-------------------------------------------------------------: | :---------------------------------------: | | **A** | Blur | `ser/2015/blur` | `ser/2015/SER-2015-Problems-D2.pdf` | - | [11611](https://solved.ac/problems/11611) | | **B** | A Classy Problem | `ser/2015/classy` | `ser/2015/SER-2015-Problems-D2.pdf` | [classy](https://open.kattis.com/problems/classy) | [11595](https://solved.ac/problems/11595) | | **C** | Egg Drop | `ser/2015/eggdrop` | `ser/2015/SER-2015-Problems-D2.pdf` | - | [11606](https://solved.ac/problems/11606) | | **D** | Excellence | `ser/2015/excellence` | `ser/2015/SER-2015-Problems-D2.pdf` | - | [11597](https://solved.ac/problems/11597) | | **E** | Grid | `ser/2015/grid` | `ser/2015/SER-2015-Problems-D2.pdf` | [grid](https://open.kattis.com/problems/grid) | [11607](https://solved.ac/problems/11607) | | **F** | Hilbert Sort | `ser/2015/hilbert` | `ser/2015/SER-2015-Problems-D2.pdf` | [hilbertsort](https://open.kattis.com/problems/hilbertsort) | [11600](https://solved.ac/problems/11600) | | **G** | The Magical 3 | `ser/2015/magical3` | `ser/2015/SER-2015-Problems-D2.pdf` | - | [11643](https://solved.ac/problems/11643) | | **H** | Persistence | `ser/2015/persistence` | `ser/2015/SER-2015-Problems-D2.pdf` | - | [11648](https://solved.ac/problems/11648) | | **I** | Simplicity | `ser/2015/simplicity` | `ser/2015/SER-2015-Problems-D2.pdf` | [simplicity](https://open.kattis.com/problems/simplicity) | [11608](https://solved.ac/problems/11608) | | **J** | Triangles | `ser/2015/triangles` | `ser/2015/SER-2015-Problems-D2.pdf` | - | [11596](https://solved.ac/problems/11596) | | **K** | Xedni Drawkcab | `ser/2015/xedni` | `ser/2015/SER-2015-Problems-D2.pdf` | - | [11649](https://solved.ac/problems/11649) | --- ## Southeast USA Regional Contest (2016) - **Contest Slug:** `ser` - **Year:** 2016 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2016%20Southeast%20USA%20Regionals%20Division%201) - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/1559) | [Div 2](https://solved.ac/problems/archive/contest/1560) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------- | :---------------------- | :---------------------------------- | :-----------------------------------------------------------------: | :---------------------------------------: | | **A** | Alphabet | `ser/2016/alphabet` | `ser/2016/SER-2016-Problems-D1.pdf` | [alphabet](https://open.kattis.com/problems/alphabet) | [13741](https://solved.ac/problems/13741) | | **B** | Base Sums | `ser/2016/basesums` | `ser/2016/SER-2016-Problems-D1.pdf` | - | [13742](https://solved.ac/problems/13742) | | **C** | Buggy Robot | `ser/2016/buggy` | `ser/2016/SER-2016-Problems-D1.pdf` | [buggyrobot2](https://open.kattis.com/problems/buggyrobot2) | [13734](https://solved.ac/problems/13734) | | **D** | Enclosure | `ser/2016/enclosure` | `ser/2016/SER-2016-Problems-D1.pdf` | [enclosure](https://open.kattis.com/problems/enclosure) | [13743](https://solved.ac/problems/13743) | | **E** | Illumination | `ser/2016/illumination` | `ser/2016/SER-2016-Problems-D1.pdf` | [illumination](https://open.kattis.com/problems/illumination) | [13744](https://solved.ac/problems/13744) | | **F** | InTents | `ser/2016/intents` | `ser/2016/SER-2016-Problems-D1.pdf` | [intents](https://open.kattis.com/problems/intents) | [13745](https://solved.ac/problems/13745) | | **G** | Islands | `ser/2016/islands` | `ser/2016/SER-2016-Problems-D1.pdf` | [islands3](https://open.kattis.com/problems/islands3) | [13746](https://solved.ac/problems/13746) | | **H** | Paint | `ser/2016/paint` | `ser/2016/SER-2016-Problems-D1.pdf` | [paint](https://open.kattis.com/problems/paint) | [13747](https://solved.ac/problems/13747) | | **I** | Periodic Strings | `ser/2016/periodic` | `ser/2016/SER-2016-Problems-D1.pdf` | [periodicstrings](https://open.kattis.com/problems/periodicstrings) | [13748](https://solved.ac/problems/13748) | | **J** | Water | `ser/2016/water` | `ser/2016/SER-2016-Problems-D1.pdf` | [water](https://open.kattis.com/problems/water) | [13749](https://solved.ac/problems/13749) | | **K** | Zigzag | `ser/2016/zigzag` | `ser/2016/SER-2016-Problems-D1.pdf` | [zigzag2](https://open.kattis.com/problems/zigzag2) | [13750](https://solved.ac/problems/13750) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------- | :---------------------- | :---------------------------------- | :-----------------------------------------------------------------: | :---------------------------------------: | | **A** | Barbells | `ser/2016/barbells` | `ser/2016/SER-2016-Problems-D2.pdf` | - | [13751](https://solved.ac/problems/13751) | | **B** | Buggy Robot | `ser/2016/buggy` | `ser/2016/SER-2016-Problems-D2.pdf` | [buggyrobot2](https://open.kattis.com/problems/buggyrobot2) | [13734](https://solved.ac/problems/13734) | | **C** | As Easy as CAB | `ser/2016/cab` | `ser/2016/SER-2016-Problems-D2.pdf` | - | [13731](https://solved.ac/problems/13731) | | **D** | Gravity | `ser/2016/gravity` | `ser/2016/SER-2016-Problems-D2.pdf` | - | [13732](https://solved.ac/problems/13732) | | **E** | Histogram | `ser/2016/histogram` | `ser/2016/SER-2016-Problems-D2.pdf` | - | [13752](https://solved.ac/problems/13752) | | **F** | Islands | `ser/2016/islands` | `ser/2016/SER-2016-Problems-D2.pdf` | [islands3](https://open.kattis.com/problems/islands3) | [13746](https://solved.ac/problems/13746) | | **G** | Project Panoptes | `ser/2016/panoptes` | `ser/2016/SER-2016-Problems-D2.pdf` | - | [13753](https://solved.ac/problems/13753) | | **H** | Periodic Strings | `ser/2016/periodic` | `ser/2016/SER-2016-Problems-D2.pdf` | [periodicstrings](https://open.kattis.com/problems/periodicstrings) | [13748](https://solved.ac/problems/13748) | | **I** | Mismatched Socks | `ser/2016/socks` | `ser/2016/SER-2016-Problems-D2.pdf` | - | [13754](https://solved.ac/problems/13754) | | **J** | It Takes Three | `ser/2016/threesq` | `ser/2016/SER-2016-Problems-D2.pdf` | - | [13755](https://solved.ac/problems/13755) | | **K** | Zigzag | `ser/2016/zigzag` | `ser/2016/SER-2016-Problems-D2.pdf` | [zigzag2](https://open.kattis.com/problems/zigzag2) | [13750](https://solved.ac/problems/13750) | --- ## Southeast USA Regional Contest (2017) - **Contest Slug:** `ser` - **Year:** 2017 - **Open.Kattis Contest:** [Open.Kattis (Mid-Atlantic 2017)](https://open.kattis.com/problem-sources/2017%20ICPC%20Mid-Atlantic%20Regional%20Contest) - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/1793) | [Div 2](https://solved.ac/problems/archive/contest/1794) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------- | :---------------------- | :---------------------------------- | :-------------------------------------------------------------------------: | :---------------------------------------: | | **B** | Flipping Out | `ser/2017/flipping` | `ser/2017/SER-2017-Problems-D1.pdf` | - | [15105](https://solved.ac/problems/15105) | | **C** | Jumping Haybales | `ser/2017/haybales` | `ser/2017/SER-2017-Problems-D1.pdf` | - | [15124](https://solved.ac/problems/15124) | | **D** | Long Long Strings | `ser/2017/longlong` | `ser/2017/SER-2017-Problems-D1.pdf` | [longlongstrings](https://open.kattis.com/problems/longlongstrings) | [15125](https://solved.ac/problems/15125) | | **E** | Move Away | `ser/2017/moveaway` | `ser/2017/SER-2017-Problems-D1.pdf` | - | [15112](https://solved.ac/problems/15112) | | **F** | Rainbow Roads | `ser/2017/rainbow` | `ser/2017/SER-2017-Problems-D1.pdf` | [rainbowroads](https://open.kattis.com/problems/rainbowroads) | [15126](https://solved.ac/problems/15126) | | **G** | Security Badges | `ser/2017/security` | `ser/2017/SER-2017-Problems-D1.pdf` | [securitybadge](https://open.kattis.com/problems/securitybadge) | [15107](https://solved.ac/problems/15107) | | **H** | Star Arrangements | `ser/2017/stars` | `ser/2017/SER-2017-Problems-D1.pdf` | [stararrangements](https://open.kattis.com/problems/stararrangements) | [15110](https://solved.ac/problems/15110) | | **I** | Treasure Map | `ser/2017/treasure` | `ser/2017/SER-2017-Problems-D1.pdf` | - | [15121](https://solved.ac/problems/15121) | | **J** | Unsatisfying | `ser/2017/unsatisfying` | `ser/2017/SER-2017-Problems-D1.pdf` | - | [15127](https://solved.ac/problems/15127) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------- | :---------------------- | :---------------------------------- | :-------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Congruent Numbers | `ser/2017/congruent` | `ser/2017/SER-2017-Problems-D2.pdf` | - | [15128](https://solved.ac/problems/15128) | | **B** | Unloaded Die | `ser/2017/die` | `ser/2017/SER-2017-Problems-D2.pdf` | - | [15120](https://solved.ac/problems/15120) | | **C** | Halfway | `ser/2017/halfway` | `ser/2017/SER-2017-Problems-D2.pdf` | - | [15118](https://solved.ac/problems/15118) | | **D** | Law 11 | `ser/2017/law11` | `ser/2017/SER-2017-Problems-D2.pdf` | - | [15129](https://solved.ac/problems/15129) | | **E** | Long Long Strings | `ser/2017/longlong` | `ser/2017/SER-2017-Problems-D2.pdf` | [longlongstrings](https://open.kattis.com/problems/longlongstrings) | [15112](https://solved.ac/problems/15112) | | **F** | Move Away | `ser/2017/moveaway` | `ser/2017/SER-2017-Problems-D2.pdf` | - | [15126](https://solved.ac/problems/15126) | | **G** | Purple Rain | `ser/2017/purple` | `ser/2017/SER-2017-Problems-D2.pdf` | [purplerain](https://open.kattis.com/problems/purplerain) | [15119](https://solved.ac/problems/15119) | | **H** | Rainbow Roads | `ser/2017/rainbow` | `ser/2017/SER-2017-Problems-D2.pdf` | [rainbowroads](https://open.kattis.com/problems/rainbowroads) | [15107](https://solved.ac/problems/15107) | | **I** | Arithmetic Sequences | `ser/2017/sequences` | `ser/2017/SER-2017-Problems-D2.pdf` | - | [15130](https://solved.ac/problems/15130) | | **J** | Star Arrangements | `ser/2017/stars` | `ser/2017/SER-2017-Problems-D2.pdf` | [stararrangements](https://open.kattis.com/problems/stararrangements) | [15121](https://solved.ac/problems/15121) | | **K** | Treasure Map | `ser/2017/treasure` | `ser/2017/SER-2017-Problems-D2.pdf` | - | [15127](https://solved.ac/problems/15127) | --- ## Southeast USA Regional Contest (2018) - **Contest Slug:** `ser` - **Year:** 2018 - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/1947) | [Div 2](https://solved.ac/problems/archive/contest/1948) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------- | :---------------------- | :---------------------------------- | :----: | :---------------------------------------: | | **B** | Count the Bits | `ser/2018/bits` | `ser/2018/SER-2018-Problems-D1.pdf` | - | [16417](https://solved.ac/problems/16417) | | **C** | Exam | `ser/2018/exam` | `ser/2018/SER-2018-Problems-D1.pdf` | - | [16406](https://solved.ac/problems/16406) | | **D** | Illiteracy | `ser/2018/illiteracy` | `ser/2018/SER-2018-Problems-D1.pdf` | - | [16411](https://solved.ac/problems/16411) | | **E** | Inversions | `ser/2018/inversions` | `ser/2018/SER-2018-Problems-D1.pdf` | - | [16418](https://solved.ac/problems/16418) | | **F** | Knockout | `ser/2018/knockout` | `ser/2018/SER-2018-Problems-D1.pdf` | - | [16419](https://solved.ac/problems/16419) | | **G** | Troop Mobilization | `ser/2018/mobilization` | `ser/2018/SER-2018-Problems-D1.pdf` | - | [16414](https://solved.ac/problems/16414) | | **H** | Paper Strips | `ser/2018/paper` | `ser/2018/SER-2018-Problems-D1.pdf` | - | [16420](https://solved.ac/problems/16420) | | **I** | Rectangles | `ser/2018/rectangles` | `ser/2018/SER-2018-Problems-D1.pdf` | - | [16421](https://solved.ac/problems/16421) | | **J** | Area Rug | `ser/2018/rug` | `ser/2018/SER-2018-Problems-D1.pdf` | - | [16422](https://solved.ac/problems/16422) | | **K** | To Tell the Truth | `ser/2018/truth` | `ser/2018/SER-2018-Problems-D1.pdf` | - | [16423](https://solved.ac/problems/16423) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------- | :---------------------- | :---------------------------------- | :----: | :---------------------------------------: | | **B** | Goat Rope | `ser/2018/goatrope` | `ser/2018/SER-2018-Problems-D2.pdf` | - | [16410](https://solved.ac/problems/16410) | | **C** | Repeating Goldbachs | `ser/2018/goldbach` | `ser/2018/SER-2018-Problems-D2.pdf` | - | [16424](https://solved.ac/problems/16424) | | **D** | Illiteracy | `ser/2018/illiteracy` | `ser/2018/SER-2018-Problems-D2.pdf` | - | [16411](https://solved.ac/problems/16411) | | **E** | Knockout | `ser/2018/knockout` | `ser/2018/SER-2018-Problems-D2.pdf` | - | [16419](https://solved.ac/problems/16419) | | **F** | Rectangles | `ser/2018/rectangles` | `ser/2018/SER-2018-Problems-D2.pdf` | - | [16421](https://solved.ac/problems/16421) | | **G** | Random Index Vectors | `ser/2018/rivs` | `ser/2018/SER-2018-Problems-D2.pdf` | - | [16425](https://solved.ac/problems/16425) | | **H** | Area Rug | `ser/2018/rug` | `ser/2018/SER-2018-Problems-D2.pdf` | - | [16422](https://solved.ac/problems/16422) | | **I** | Sculpture | `ser/2018/sculpture` | `ser/2018/SER-2018-Problems-D2.pdf` | - | [16426](https://solved.ac/problems/16426) | | **J** | Time Limits | `ser/2018/timelimits` | `ser/2018/SER-2018-Problems-D2.pdf` | - | [16427](https://solved.ac/problems/16427) | | **K** | To Tell the Truth | `ser/2018/truth` | `ser/2018/SER-2018-Problems-D2.pdf` | - | [16423](https://solved.ac/problems/16423) | --- ## Southeast USA Regional Contest (2019) - **Contest Slug:** `ser` - **Year:** 2019 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2019%20ICPC%20Southeast%20USA%20Regional%20Programming%20Contest) - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/2113) | [Div 2](https://solved.ac/problems/archive/contest/2114) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------- | :---------------------- | :---------------------------------- | :----: | :---------------------------------------: | | **B** | Computer Cache | `ser/2019/cache` | `ser/2019/2019-SER-D1-Problems.pdf` | - | [17992](https://solved.ac/problems/17992) | | **C** | Elven Efficiency | `ser/2019/elven` | `ser/2019/2019-SER-D1-Problems.pdf` | - | [17993](https://solved.ac/problems/17993) | | **D** | Swap Free | `ser/2019/swapfree` | `ser/2019/2019-SER-D1-Problems.pdf` | - | [17994](https://solved.ac/problems/17994) | | **E** | Fixed Point Permutations | `ser/2019/fixedpoint` | `ser/2019/2019-SER-D1-Problems.pdf` | - | [17995](https://solved.ac/problems/17995) | | **F** | Interstellar Travel | `ser/2019/interstellar` | `ser/2019/2019-SER-D1-Problems.pdf` | - | [17996](https://solved.ac/problems/17996) | | **G** | Jumping Path | `ser/2019/jumping` | `ser/2019/2019-SER-D1-Problems.pdf` | - | [17997](https://solved.ac/problems/17997) | | **H** | Levenshtein Distance | `ser/2019/levenshtein` | `ser/2019/2019-SER-D1-Problems.pdf` | - | [17998](https://solved.ac/problems/17998) | | **I** | Maze Connect | `ser/2019/maze` | `ser/2019/2019-SER-D1-Problems.pdf` | - | [17999](https://solved.ac/problems/17999) | | **J** | One of Each | `ser/2019/oneofeach` | `ser/2019/2019-SER-D1-Problems.pdf` | - | [18000](https://solved.ac/problems/18000) | | **K** | Windmill Pivot | `ser/2019/windmill` | `ser/2019/2019-SER-D1-Problems.pdf` | - | [18001](https://solved.ac/problems/18001) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------- | :---------------------- | :---------------------------------- | :---------------------------------------------------: | :---------------------------------------: | | **B** | Carryless Square Root | `ser/2019/carryless` | `ser/2019/2019-SER-D2-Problems.pdf` | - | [17991](https://solved.ac/problems/17991) | | **C** | Checkerboard | `ser/2019/checkerboard` | `ser/2019/2019-SER-D2-Problems.pdf` | - | [18003](https://solved.ac/problems/18003) | | **D** | From A to B | `ser/2019/atob` | `ser/2019/2019-SER-D2-Problems.pdf` | [fromatob](https://open.kattis.com/problems/fromatob) | [18004](https://solved.ac/problems/18004) | | **E** | Elven Efficiency | `ser/2019/elven` | `ser/2019/2019-SER-D2-Problems.pdf` | - | [17993](https://solved.ac/problems/17993) | | **F** | Even or Odd? | `ser/2019/evenorodd` | `ser/2019/2019-SER-D2-Problems.pdf` | - | [18005](https://solved.ac/problems/18005) | | **G** | Jumping Path | `ser/2019/jumping` | `ser/2019/2019-SER-D2-Problems.pdf` | - | [18006](https://solved.ac/problems/18006) | | **H** | Levenshtein Distance | `ser/2019/levenshtein` | `ser/2019/2019-SER-D2-Problems.pdf` | - | [17997](https://solved.ac/problems/17997) | | **I** | Rainbow Strings | `ser/2019/rainbow` | `ser/2019/2019-SER-D2-Problems.pdf` | - | [17998](https://solved.ac/problems/17998) | | **J** | ReMorse | `ser/2019/remorse` | `ser/2019/2019-SER-D2-Problems.pdf` | - | [18007](https://solved.ac/problems/18007) | --- ## Southeast USA Regional Contest (2020) - **Contest Slug:** `ser` - **Year:** 2020 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2020%20ICPC%20North%20America%20Regionals%20%28March%206%202021%29) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2455) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :----------------------------- | :---------------------- | :----------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Ant Typing | `ser/2020/ant` | `ser/2020/se2020-1.pdf` | [anttyping](https://open.kattis.com/problems/anttyping) | [21134](https://solved.ac/problems/21134) | | **B** | Bad Packing | `ser/2020/badpacking` | `ser/2020/se2020-1.pdf` | [badpacking](https://open.kattis.com/problems/badpacking) | [21135](https://solved.ac/problems/21135) | | **C** | Bitonic Ordering | `ser/2020/bitonicordering` | `ser/2020/se2020-1.pdf` | [bitonicordering](https://open.kattis.com/problems/bitonicordering) | [21136](https://solved.ac/problems/21136) | | **D** | Condorcet | `ser/2020/condorcet` | `ser/2020/se2020-1.pdf` | [condorcet](https://open.kattis.com/problems/condorcet) | [21137](https://solved.ac/problems/21137) | | **E** | Dominating Duos | `ser/2020/diagonaldivision` | `ser/2020/se2020-1.pdf` | [dominatingduos](https://open.kattis.com/problems/dominatingduos) | [21138](https://solved.ac/problems/21138) | | **F** | Exam Manipulation | `ser/2020/exam` | `ser/2020/se2020-1.pdf` | [exammanipulation](https://open.kattis.com/problems/exammanipulation) | [21139](https://solved.ac/problems/21139) | | **G** | Exciting Tournament | `ser/2020/excitingtournament` | `ser/2020/se2020-1.pdf` | [excitingtournament](https://open.kattis.com/problems/excitingtournament) | [21140](https://solved.ac/problems/21140) | | **H** | Kth Subtree | `ser/2020/kthsubtree` | `ser/2020/se2020-1.pdf` | [kthsubtree](https://open.kattis.com/problems/kthsubtree) | [21141](https://solved.ac/problems/21141) | | **I** | Longest Common Subsequence | `ser/2020/lcs` | `ser/2020/se2020-1.pdf` | [longestcommonsubsequence](https://open.kattis.com/problems/longestcommonsubsequence) | [21142](https://solved.ac/problems/21142) | | **J** | Magic Trick | `ser/2020/magic` | `ser/2020/se2020-1.pdf` | [magictrick](https://open.kattis.com/problems/magictrick) | [21143](https://solved.ac/problems/21143) | | **K** | Missing Number | `ser/2020/missing` | `ser/2020/se2020-1.pdf` | [missingnumber](https://open.kattis.com/problems/missingnumber) | [21144](https://solved.ac/problems/21144) | | **L** | Rainbow Numbers | `ser/2020/rainbownumbers` | `ser/2020/se2020-1.pdf` | [rainbownumbers](https://open.kattis.com/problems/rainbownumbers) | [21145](https://solved.ac/problems/21145) | | **M** | Rating Problems | `ser/2020/rating` | `ser/2020/se2020-1.pdf` | [ratingproblems](https://open.kattis.com/problems/ratingproblems) | [21146](https://solved.ac/problems/21146) | | **N** | Triangular Collection | `ser/2020/triangular` | `ser/2020/se2020-1.pdf` | [triangularcollection](https://open.kattis.com/problems/triangularcollection) | [21147](https://solved.ac/problems/21147) | | **O** | TripTik | `ser/2020/atlas1d` | `ser/2020/se2020-1.pdf` | [triptik](https://open.kattis.com/problems/triptik) | [21148](https://solved.ac/problems/21148) | | **P** | Unread Messages | `ser/2020/unread` | `ser/2020/se2020-1.pdf` | [unreadmessages](https://open.kattis.com/problems/unreadmessages) | [21149](https://solved.ac/problems/21149) | --- ## Southeast USA Regional Contest (2021) - **Contest Slug:** `ser` - **Year:** 2021 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2021%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28March%205%202022%29) - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/3522) | [Div 2](https://solved.ac/problems/archive/contest/3523) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------------- | :------------------------------------- | :---------------------- | :---------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Black and White | `ser/2021/blackandwhite` | `ser/2021/se2021d1.pdf` | [blackandwhite](https://open.kattis.com/problems/blackandwhite) | [24604](https://solved.ac/problems/24604) | | **B** | Circle Bounce | `ser/2021/circlebounce` | `ser/2021/se2021d1.pdf` | [circlebounce](https://open.kattis.com/problems/circlebounce) | [24590](https://solved.ac/problems/24590) | | **C** | Diagonals | `ser/2021/diagonals` | `ser/2021/se2021d1.pdf` | [diagonals](https://open.kattis.com/problems/diagonals) | [24598](https://solved.ac/problems/24598) | | **D** | Dorm Room Divide | `ser/2021/dormroomdivide` | `ser/2021/se2021d1.pdf` | [dormroomdivide](https://open.kattis.com/problems/dormroomdivide) | [24601](https://solved.ac/problems/24601) | | **E** | Fail Them All! | `ser/2021/failthemall` | `ser/2021/se2021d1.pdf` | [failthemall](https://open.kattis.com/problems/failthemall) | [24599](https://solved.ac/problems/24599) | | **F** | Hopscotch 500 | `ser/2021/hopscotch500` | `ser/2021/se2021d1.pdf` | [hopscotch500](https://open.kattis.com/problems/hopscotch500) | [24596](https://solved.ac/problems/24596) | | **G** | Shortest Missing Subsequences | `ser/2021/shortestmissingsubsequences` | `ser/2021/se2021d1.pdf` | [shortestmissingsubsequences](https://open.kattis.com/problems/shortestmissingsubsequences) | [24591](https://solved.ac/problems/24591) | | **H** | Tetris Generation | `ser/2021/tetrisgeneration` | `ser/2021/se2021d1.pdf` | [tetrisgeneration](https://open.kattis.com/problems/tetrisgeneration) | [24605](https://solved.ac/problems/24605) | | **I** | Tournament Seeding | `ser/2021/tournamentseeding` | `ser/2021/se2021d1.pdf` | [tournamentseeding](https://open.kattis.com/problems/tournamentseeding) | [24600](https://solved.ac/problems/24600) | | **J** | Tree Hopping | `ser/2021/treehopping` | `ser/2021/se2021d1.pdf` | [treehopping](https://open.kattis.com/problems/treehopping) | [24602](https://solved.ac/problems/24602) | | **K** | XOR Island | `ser/2021/xorisland` | `ser/2021/se2021d1.pdf` | [xorisland](https://open.kattis.com/problems/xorisland) | [24592](https://solved.ac/problems/24592) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------------- | :------------------------------------- | :---------------------- | :-----------------------------------------------------------------: | :---------------------------------------: | | **A** | Average Character | `ser/2021/averagecharacter` | `ser/2021/se2021d2.pdf` | [averagecharacter](https://open.kattis.com/problems/averagecharacter) | [24608](https://solved.ac/problems/24608) | | **B** | Black and White | `ser/2021/blackandwhite` | `ser/2021/se2021d2.pdf` | [blackandwhite](https://open.kattis.com/problems/blackandwhite) | [24604](https://solved.ac/problems/24604) | | **C** | Diagonals | `ser/2021/diagonals` | `ser/2021/se2021d2.pdf` | [diagonals](https://open.kattis.com/problems/diagonals) | [24598](https://solved.ac/problems/24598) | | **D** | Dorm Room Divide | `ser/2021/dormroomdivide` | `ser/2021/se2021d2.pdf` | [dormroomdivide](https://open.kattis.com/problems/dormroomdivide) | [24601](https://solved.ac/problems/24601) | | **E** | Double Password | `ser/2021/doublepassword` | `ser/2021/se2021d2.pdf` | [doublepassword](https://open.kattis.com/problems/doublepassword) | [24606](https://solved.ac/problems/24606) | | **F** | Overdraft | `ser/2021/overdraft` | `ser/2021/se2021d2.pdf` | [overdraft](https://open.kattis.com/problems/overdraft) | [24609](https://solved.ac/problems/24609) | | **G** | Rise and Fall | `ser/2021/riseandfall` | `ser/2021/se2021d2.pdf` | [riseandfall](https://open.kattis.com/problems/riseandfall) | [24595](https://solved.ac/problems/24595) | | **H** | Square Bounce | `ser/2021/squarebounce` | `ser/2021/se2021d2.pdf` | [squarebounce](https://open.kattis.com/problems/squarebounce) | [24607](https://solved.ac/problems/24607) | | **I** | Tetris Generation | `ser/2021/tetrisgeneration` | `ser/2021/se2021d2.pdf` | [tetrisgeneration](https://open.kattis.com/problems/tetrisgeneration) | [24605](https://solved.ac/problems/24605) | | **J** | Tournament Seeding | `ser/2021/tournamentseeding` | `ser/2021/se2021d2.pdf` | [tournamentseeding](https://open.kattis.com/problems/tournamentseeding) | [24600](https://solved.ac/problems/24600) | | **K** | Tree Hopping | `ser/2021/treehopping` | `ser/2021/se2021d2.pdf` | [treehopping](https://open.kattis.com/problems/treehopping) | [24602](https://solved.ac/problems/24602) | | **L** | Who Goes There? | `ser/2021/whogoesthere` | `ser/2021/se2021d2.pdf` | [whogoesthere](https://open.kattis.com/problems/whogoesthere) | [24610](https://solved.ac/problems/24610) | --- ## Southeast USA Regional Contest (2022) - **Contest Slug:** `ser` - **Year:** 2022 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2022%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2025%2C%202023%29) - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/3508) | [Div 2](https://solved.ac/problems/archive/contest/3511) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :---------------------------------- | :--------------------- | :---------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Fading Wind | `ser/2022/fadingwind` | `ser/2022/seusad1.pdf` | [fadingwind](https://open.kattis.com/problems/fadingwind) | [27579](https://solved.ac/problems/27579) | | **B** | Creative Accounting | `ser/2022/creativeaccounting` | `ser/2022/seusad1.pdf` | [creativeaccounting](https://open.kattis.com/problems/creativeaccounting) | [27573](https://solved.ac/problems/27573) | | **C** | Chocolate Chip Fabrication | `ser/2022/chocolatechipfabrication` | `ser/2022/seusad1.pdf` | [chocolatechipfabrication](https://open.kattis.com/problems/chocolatechipfabrication) | [27570](https://solved.ac/problems/27570) | | **D** | Counting Satellites | `ser/2022/countingsatellites` | `ser/2022/seusad1.pdf` | [countingsatellites](https://open.kattis.com/problems/countingsatellites) | [27572](https://solved.ac/problems/27572) | | **E** | Exponent Exchange | `ser/2022/exponentexchange` | `ser/2022/seusad1.pdf` | [exponentexchange](https://open.kattis.com/problems/exponentexchange) | [27578](https://solved.ac/problems/27578) | | **F** | Family Visits | `ser/2022/familyvisits` | `ser/2022/seusad1.pdf` | [familyvisits](https://open.kattis.com/problems/familyvisits) | [27580](https://solved.ac/problems/27580) | | **G** | Eroding Pillars | `ser/2022/erodingpillars` | `ser/2022/seusad1.pdf` | [erodingpillars](https://open.kattis.com/problems/erodingpillars) | [27576](https://solved.ac/problems/27576) | | **H** | Triangle Containment | `ser/2022/trianglecontainment` | `ser/2022/seusad1.pdf` | [trianglecontainment](https://open.kattis.com/problems/trianglecontainment) | [27592](https://solved.ac/problems/27592) | | **I** | Color Tubes | `ser/2022/colortubes` | `ser/2022/seusad1.pdf` | [colortubes](https://open.kattis.com/problems/colortubes) | [27571](https://solved.ac/problems/27571) | | **J** | Three Dice | `ser/2022/threedice` | `ser/2022/seusad1.pdf` | [threedice](https://open.kattis.com/problems/threedice) | [27591](https://solved.ac/problems/27591) | | **K** | Lone Knight | `ser/2022/loneknight` | `ser/2022/seusad1.pdf` | [loneknight](https://open.kattis.com/problems/loneknight) | [27585](https://solved.ac/problems/27585) | | **L** | Branch Manager | `ser/2022/branchmanager` | `ser/2022/seusad1.pdf` | [branchmanager](https://open.kattis.com/problems/branchmanager) | [27568](https://solved.ac/problems/27568) | | **M** | Alchemy | `ser/2022/alchemy` | `ser/2022/seusad1.pdf` | [alchemy2](https://open.kattis.com/problems/alchemy2) | [27565](https://solved.ac/problems/27565) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :------------------------------------ | :----------------------- | :---------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Blueberry Waffle | `ser/2022/blueberrywaffle` | `ser/2022/seusad2.pdf` | [blueberrywaffle](https://open.kattis.com/problems/blueberrywaffle) | [27566](https://solved.ac/problems/27566) | | **B** | Fading Wind | `ser/2022/fadingwind` | `ser/2022/seusad2.pdf` | [fadingwind](https://open.kattis.com/problems/fadingwind) | [27579](https://solved.ac/problems/27579) | | **C** | Creative Accounting | `ser/2022/creativeaccounting` | `ser/2022/seusad2.pdf` | [creativeaccounting](https://open.kattis.com/problems/creativeaccounting) | [27573](https://solved.ac/problems/27573) | | **D** | Chocolate Chip Fabrication | `ser/2022/chocolatechipfabrication` | `ser/2022/seusad2.pdf` | [chocolatechipfabrication](https://open.kattis.com/problems/chocolatechipfabrication) | [27570](https://solved.ac/problems/27570) | | **E** | Everything Is A Nail | `ser/2022/everythingisanail` | `ser/2022/seusad2.pdf` | [everythingisanail](https://open.kattis.com/problems/everythingisanail) | [27577](https://solved.ac/problems/27577) | | **F** | Family Visits | `ser/2022/familyvisits` | `ser/2022/seusad2.pdf` | [familyvisits](https://open.kattis.com/problems/familyvisits) | [27580](https://solved.ac/problems/27580) | | **G** | Streets Ahead | `ser/2022/streetsahead` | `ser/2022/seusad2.pdf` | [streetsahead](https://open.kattis.com/problems/streetsahead) | [27589](https://solved.ac/problems/27589) | | **H** | Sun and Moon | `ser/2022/sunandmoon` | `ser/2022/seusad2.pdf` | [sunandmoon](https://open.kattis.com/problems/sunandmoon) | [27590](https://solved.ac/problems/27590) | | **I** | Color Tubes | `ser/2022/colortubes` | `ser/2022/seusad2.pdf` | [colortubes](https://open.kattis.com/problems/colortubes) | [27571](https://solved.ac/problems/27571) | | **J** | Three Dice | `ser/2022/threedice` | `ser/2022/seusad2.pdf` | [threedice](https://open.kattis.com/problems/threedice) | [27591](https://solved.ac/problems/27591) | | **K** | Food Processor | `ser/2022/foodprocessor` | `ser/2022/seusad2.pdf` | [foodprocessor](https://open.kattis.com/problems/foodprocessor) | [27581](https://solved.ac/problems/27581) | | **L** | Branch Manager | `ser/2022/branchmanager` | `ser/2022/seusad2.pdf` | [branchmanager](https://open.kattis.com/problems/branchmanager) | [27568](https://solved.ac/problems/27568) | | **M** | Alchemy | `ser/2022/alchemy` | `ser/2022/seusad2.pdf` | [alchemy2](https://open.kattis.com/problems/alchemy2) | [27565](https://solved.ac/problems/27565) | --- ## Southeast USA Regional Contest (2023) - **Contest Slug:** `ser` - **Year:** 2023 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2023%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2024%2C%202024%29) - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/4163) | [Div 2](https://solved.ac/problems/archive/contest/4164) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------ | :--------------------------------------- | :----------------------- | :---------------------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | ABC String | `ser/2023/abcstring` | `ser/2023/seusad1.pdf` | [abcstring](https://open.kattis.com/problems/abcstring) | [31506](https://solved.ac/problems/31506) | | **B** | Balanced Tree Path | `ser/2023/balancedtreepath` | `ser/2023/seusad1.pdf` | [balancedtreepath](https://open.kattis.com/problems/balancedtreepath) | [31523](https://solved.ac/problems/31523) | | **C** | Cramming for Finals | `ser/2023/crammingforfinals` | `ser/2023/seusad1.pdf` | [crammingforfinals](https://open.kattis.com/problems/crammingforfinals) | [31509](https://solved.ac/problems/31509) | | **D** | Ordered Problem Set | `ser/2023/orderedproblemset` | `ser/2023/seusad1.pdf` | [orderedproblemset](https://open.kattis.com/problems/orderedproblemset) | [31522](https://solved.ac/problems/31522) | | **E** | Eccentric Excursion | `ser/2023/eccentricexcursion` | `ser/2023/seusad1.pdf` | [eccentricexcursion](https://open.kattis.com/problems/eccentricexcursion) | [31510](https://solved.ac/problems/31510) | | **F** | Matrix Fraud | `ser/2023/matrixfraud` | `ser/2023/seusad1.pdf` | [matrixfraud](https://open.kattis.com/problems/matrixfraud) | [31512](https://solved.ac/problems/31512) | | **G** | On-Call Team | `ser/2023/oncallteam` | `ser/2023/seusad1.pdf` | [oncallteam](https://open.kattis.com/problems/oncallteam) | [31513](https://solved.ac/problems/31513) | | **H** | Range Editing | `ser/2023/rangeediting` | `ser/2023/seusad1.pdf` | [rangeediting](https://open.kattis.com/problems/rangeediting) | [31514](https://solved.ac/problems/31514) | | **I** | Item Selection | `ser/2023/itemselection` | `ser/2023/seusad1.pdf` | [itemselection](https://open.kattis.com/problems/itemselection) | [31511](https://solved.ac/problems/31511) | | **J** | Sequence Guessing | `ser/2023/sequenceguessing` | `ser/2023/seusad1.pdf` | [sequenceguessing](https://open.kattis.com/problems/sequenceguessing) | [31516](https://solved.ac/problems/31516) | | **K** | Streets Behind | `ser/2023/streetsbehind` | `ser/2023/seusad1.pdf` | [streetsbehind](https://open.kattis.com/problems/streetsbehind) | [31525](https://solved.ac/problems/31525) | | **L** | Segment Drawing | `ser/2023/segmentdrawing` | `ser/2023/seusad1.pdf` | [segmentdrawing](https://open.kattis.com/problems/segmentdrawing) | [31515](https://solved.ac/problems/31515) | | **M** | Champernowne Verification | `ser/2023/champernowneverification` | `ser/2023/seusad1.pdf` | [champernowneverification](https://open.kattis.com/problems/champernowneverification) | [31520](https://solved.ac/problems/31520) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------ | :--------------------------------------- | :----------------------- | :---------------------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | ABC String | `ser/2023/abcstring` | `ser/2023/seusad2-3.pdf` | [abcstring](https://open.kattis.com/problems/abcstring) | [31506](https://solved.ac/problems/31506) | | **B** | Balanced Tree Path | `ser/2023/balancedtreepath` | `ser/2023/seusad2-3.pdf` | [balancedtreepath](https://open.kattis.com/problems/balancedtreepath) | [31523](https://solved.ac/problems/31523) | | **C** | A Cappella Recording | `ser/2023/acappellarecording` | `ser/2023/seusad2-3.pdf` | [acappellarecording](https://open.kattis.com/problems/acappellarecording) | [31519](https://solved.ac/problems/31519) | | **D** | Ordered Problem Set | `ser/2023/orderedproblemset` | `ser/2023/seusad2-3.pdf` | [orderedproblemset](https://open.kattis.com/problems/orderedproblemset) | [31522](https://solved.ac/problems/31522) | | **E** | Acceptable Seating Arrangements | `ser/2023/acceptableseatingarrangements` | `ser/2023/seusad2-3.pdf` | [acceptableseatingarrangements](https://open.kattis.com/problems/acceptableseatingarrangements) | [31507](https://solved.ac/problems/31507) | | **F** | Four Die Rolls | `ser/2023/fourdierolls` | `ser/2023/seusad2-3.pdf` | [fourdierolls](https://open.kattis.com/problems/fourdierolls) | [31521](https://solved.ac/problems/31521) | | **G** | Rampant Growth | `ser/2023/rampantgrowth` | `ser/2023/seusad2-3.pdf` | [rampantgrowth](https://open.kattis.com/problems/rampantgrowth) | [31526](https://solved.ac/problems/31526) | | **H** | Triple Sevens | `ser/2023/triplesevens` | `ser/2023/seusad2-3.pdf` | [triplesevens](https://open.kattis.com/problems/triplesevens) | [31518](https://solved.ac/problems/31518) | | **I** | Item Selection | `ser/2023/itemselection` | `ser/2023/seusad2-3.pdf` | [itemselection](https://open.kattis.com/problems/itemselection) | [31511](https://solved.ac/problems/31511) | | **J** | Sequence Guessing | `ser/2023/sequenceguessing` | `ser/2023/seusad2-3.pdf` | [sequenceguessing](https://open.kattis.com/problems/sequenceguessing) | [31516](https://solved.ac/problems/31516) | | **K** | Streets Behind | `ser/2023/streetsbehind` | `ser/2023/seusad2-3.pdf` | [streetsbehind](https://open.kattis.com/problems/streetsbehind) | [31525](https://solved.ac/problems/31525) | | **L** | Training | `ser/2023/training` | `ser/2023/seusad2-3.pdf` | [training](https://open.kattis.com/problems/training) | [31517](https://solved.ac/problems/31517) | | **M** | Champernowne Verification | `ser/2023/champernowneverification` | `ser/2023/seusad2-3.pdf` | [champernowneverification](https://open.kattis.com/problems/champernowneverification) | [31520](https://solved.ac/problems/31520) | --- ## Southeast USA Regional Contest (2024) - **Contest Slug:** `ser` - **Year:** 2024 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2024%20ICPC%20South%20Central%2C%20South%20East%20and%20Mid%20Atlantic%20Regional%20%28November%2016%2C%202024%29) - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/4349) | [Div 2](https://solved.ac/problems/archive/contest/4350) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------- | :---------------------------------- | :----------------------- | :-----------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Welcome Sign | `ser/2024/welcomesign` | `ser/2024/seusad1-2.pdf` | [welcomesign](https://open.kattis.com/problems/welcomesign) | [32841](https://solved.ac/problems/32841) | | **B** | Triangles of a Square | `ser/2024/trianglesofasquare` | `ser/2024/seusad1-2.pdf` | [trianglesofasquare](https://open.kattis.com/problems/trianglesofasquare) | [32842](https://solved.ac/problems/32842) | | **C** | City Bike | `ser/2024/citybike` | `ser/2024/seusad1-2.pdf` | [citybike](https://open.kattis.com/problems/citybike) | [32843](https://solved.ac/problems/32843) | | **D** | Duel of Cards | `ser/2024/duelofcards` | `ser/2024/seusad1-2.pdf` | [duelofcards](https://open.kattis.com/problems/duelofcards) | [32844](https://solved.ac/problems/32844) | | **E** | Elevated Rails | `ser/2024/elevatedrails` | `ser/2024/seusad1-2.pdf` | [elevatedrails](https://open.kattis.com/problems/elevatedrails) | [32845](https://solved.ac/problems/32845) | | **F** | Finding Keys | `ser/2024/findingkeys` | `ser/2024/seusad1-2.pdf` | [findingkeys](https://open.kattis.com/problems/findingkeys) | [32846](https://solved.ac/problems/32846) | | **G** | Intergalactic Team | `ser/2024/intergalacticteam` | `ser/2024/seusad1-2.pdf` | [intergalacticteam](https://open.kattis.com/problems/intergalacticteam) | [32847](https://solved.ac/problems/32847) | | **H** | Herb Mixing | `ser/2024/herbmixing` | `ser/2024/seusad1-2.pdf` | [herbmixing](https://open.kattis.com/problems/herbmixing) | [32848](https://solved.ac/problems/32848) | | **I** | Island Memories | `ser/2024/islandmemories` | `ser/2024/seusad1-2.pdf` | [islandmemories](https://open.kattis.com/problems/islandmemories) | [32849](https://solved.ac/problems/32849) | | **J** | Perfect Squares | `ser/2024/perfectsquares` | `ser/2024/seusad1-2.pdf` | [perfectsquares](https://open.kattis.com/problems/perfectsquares) | [32850](https://solved.ac/problems/32850) | | **K** | Optimized Cheating | `ser/2024/optimizedcheating` | `ser/2024/seusad1-2.pdf` | [optimizedcheating](https://open.kattis.com/problems/optimizedcheating) | [32851](https://solved.ac/problems/32851) | | **L** | Pianissimo | `ser/2024/pianissimo` | `ser/2024/seusad1-2.pdf` | [pianissimo](https://open.kattis.com/problems/pianissimo) | [32852](https://solved.ac/problems/32852) | | **M** | Virtual Reality Playspace | `ser/2024/virtualrealityplayspace` | `ser/2024/seusad1-2.pdf` | [vrplayspace](https://open.kattis.com/problems/vrplayspace) | [32853](https://solved.ac/problems/32853) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------- | :---------------------------------- | :----------------------- | :-----------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Welcome Sign | `ser/2024/welcomesign` | `ser/2024/seusad2-4.pdf` | [welcomesign](https://open.kattis.com/problems/welcomesign) | [32841](https://solved.ac/problems/32841) | | **B** | Triangles of a Square | `ser/2024/trianglesofasquare` | `ser/2024/seusad2-4.pdf` | [trianglesofasquare](https://open.kattis.com/problems/trianglesofasquare) | [32842](https://solved.ac/problems/32842) | | **C** | Traffic Lights | `ser/2024/trafficlights` | `ser/2024/seusad2-4.pdf` | [trafficlights](https://open.kattis.com/problems/trafficlights) | [32854](https://solved.ac/problems/32854) | | **D** | Duel of Cards | `ser/2024/duelofcards` | `ser/2024/seusad2-4.pdf` | [duelofcards](https://open.kattis.com/problems/duelofcards) | [32844](https://solved.ac/problems/32844) | | **E** | Which One is Larger | `ser/2024/whichoneislarger` | `ser/2024/seusad2-4.pdf` | [whichoneislarger](https://open.kattis.com/problems/whichoneislarger) | [32855](https://solved.ac/problems/32855) | | **F** | Office Building | `ser/2024/officebuilding` | `ser/2024/seusad2-4.pdf` | [officebuilding](https://open.kattis.com/problems/officebuilding) | [32856](https://solved.ac/problems/32856) | | **G** | Intergalactic Team | `ser/2024/intergalacticteam` | `ser/2024/seusad2-4.pdf` | [intergalacticteam](https://open.kattis.com/problems/intergalacticteam) | [32847](https://solved.ac/problems/32847) | | **H** | Herb Mixing | `ser/2024/herbmixing` | `ser/2024/seusad2-4.pdf` | [herbmixing](https://open.kattis.com/problems/herbmixing) | [32848](https://solved.ac/problems/32848) | | **I** | Island Memories | `ser/2024/islandmemories` | `ser/2024/seusad2-4.pdf` | [islandmemories](https://open.kattis.com/problems/islandmemories) | [32849](https://solved.ac/problems/32849) | | **J** | Perfect Squares | `ser/2024/perfectsquares` | `ser/2024/seusad2-4.pdf` | [perfectsquares](https://open.kattis.com/problems/perfectsquares) | [32850](https://solved.ac/problems/32850) | | **K** | Optimized Cheating | `ser/2024/optimizedcheating` | `ser/2024/seusad2-4.pdf` | [optimizedcheating](https://open.kattis.com/problems/optimizedcheating) | [32851](https://solved.ac/problems/32851) | | **L** | Pianissimo | `ser/2024/pianissimo` | `ser/2024/seusad2-4.pdf` | [pianissimo](https://open.kattis.com/problems/pianissimo) | [32852](https://solved.ac/problems/32852) | | **M** | Memories of Passport Stamps | `ser/2024/memoriesofpassportstamps` | `ser/2024/seusad2-4.pdf` | [memoriesofpassportstamps](https://open.kattis.com/problems/memoriesofpassportstamps) | [32857](https://solved.ac/problems/32857) | --- ## Southeast USA Regional Contest (2025) - **Contest Slug:** `ser` - **Year:** 2025 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/2025%20ICPC%20South%20Central%2C%20South%20East%20and%20Mid%20Atlantic%20Regional%20%28November%208%2C%202025%29) - **solved.ac Archive:** [Div 1](https://solved.ac/problems/archive/contest/4679) | [Div 2](https://solved.ac/problems/archive/contest/4680) ### Division 1 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------------- | :----------------------------------- | :---------------------- | :-------------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Orchard Fence | `ser/2025/orchardfence` | `ser/2025/scdiv1-1.pdf` | [orchardfence](https://open.kattis.com/problems/orchardfence) | [35354](https://solved.ac/problems/35354) | | **B** | Blind Bottles | `ser/2025/blindbottles` | `ser/2025/scdiv1-1.pdf` | [blindbottles](https://open.kattis.com/problems/blindbottles) | [35355](https://solved.ac/problems/35355) | | **C** | One Way Only | `ser/2025/onewayonly` | `ser/2025/scdiv1-1.pdf` | [onewayonly](https://open.kattis.com/problems/onewayonly) | [35356](https://solved.ac/problems/35356) | | **D** | GUID Generator | `ser/2025/guidgenerator` | `ser/2025/scdiv1-1.pdf` | [guidgenerator](https://open.kattis.com/problems/guidgenerator) | [35357](https://solved.ac/problems/35357) | | **E** | Photo Encoding | `ser/2025/photoencoding` | `ser/2025/scdiv1-1.pdf` | [photoencoding](https://open.kattis.com/problems/photoencoding) | [35358](https://solved.ac/problems/35358) | | **F** | Meeting Free Fridays | `ser/2025/meetingfreefridays` | `ser/2025/scdiv1-1.pdf` | [meetingfreefridays](https://open.kattis.com/problems/meetingfreefridays) | [35359](https://solved.ac/problems/35359) | | **G** | Galaxy Governance | `ser/2025/galaxygovernance` | `ser/2025/scdiv1-1.pdf` | [galaxygovernance](https://open.kattis.com/problems/galaxygovernance) | [35360](https://solved.ac/problems/35360) | | **H** | Rows of Stars | `ser/2025/rowsofstars` | `ser/2025/scdiv1-1.pdf` | [rowsofstars](https://open.kattis.com/problems/rowsofstars) | [35361](https://solved.ac/problems/35361) | | **I** | Manhattan Interference | `ser/2025/manhattaninterference` | `ser/2025/scdiv1-1.pdf` | [manhattaninterference](https://open.kattis.com/problems/manhattaninterference) | [35362](https://solved.ac/problems/35362) | | **J** | Game of Nines | `ser/2025/gameofnines` | `ser/2025/scdiv1-1.pdf` | [gameofnines](https://open.kattis.com/problems/gameofnines) | [35363](https://solved.ac/problems/35363) | | **K** | Swap for Palindrome | `ser/2025/swapforpalindrome` | `ser/2025/scdiv1-1.pdf` | [swapforpalindrome](https://open.kattis.com/problems/swapforpalindrome) | [35364](https://solved.ac/problems/35364) | | **L** | Tree Racing | `ser/2025/treeracing` | `ser/2025/scdiv1-1.pdf` | [treeracing](https://open.kattis.com/problems/treeracing) | [35365](https://solved.ac/problems/35365) | | **M** | Much Room for Mushrooms | `ser/2025/muchroomformushrooms` | `ser/2025/scdiv1-1.pdf` | [muchroomformushrooms](https://open.kattis.com/problems/muchroomformushrooms) | [35366](https://solved.ac/problems/35366) | ### Division 2 | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------------- | :----------------------------------- | :---------------------- | :-------------------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Snakey String | `ser/2025/snakeystring` | `ser/2025/scdiv2-1.pdf` | [snakeystring](https://open.kattis.com/problems/snakeystring) | [35367](https://solved.ac/problems/35367) | | **B** | Blind Bottles | `ser/2025/blindbottles` | `ser/2025/scdiv2-1.pdf` | [blindbottles](https://open.kattis.com/problems/blindbottles) | [35355](https://solved.ac/problems/35355) | | **C** | One Way Only | `ser/2025/onewayonly` | `ser/2025/scdiv2-1.pdf` | [onewayonly](https://open.kattis.com/problems/onewayonly) | [35356](https://solved.ac/problems/35356) | | **D** | GUID Generator | `ser/2025/guidgenerator` | `ser/2025/scdiv2-1.pdf` | [guidgenerator](https://open.kattis.com/problems/guidgenerator) | [35357](https://solved.ac/problems/35357) | | **E** | Photo Encoding | `ser/2025/photoencoding` | `ser/2025/scdiv2-1.pdf` | [photoencoding](https://open.kattis.com/problems/photoencoding) | [35358](https://solved.ac/problems/35358) | | **F** | Breakout | `ser/2025/breakout` | `ser/2025/scdiv2-1.pdf` | [breakout2](https://open.kattis.com/problems/breakout2) | [35368](https://solved.ac/problems/35368) | | **G** | Shinjuku Station | `ser/2025/shinjukustation` | `ser/2025/scdiv2-1.pdf` | [shinjukustation](https://open.kattis.com/problems/shinjukustation) | [35369](https://solved.ac/problems/35369) | | **H** | Memories of Passport Control | `ser/2025/memoriesofpassportcontrol` | `ser/2025/scdiv2-1.pdf` | [memoriesofpassportcontrol](https://open.kattis.com/problems/memoriesofpassportcontrol) | [35370](https://solved.ac/problems/35370) | | **I** | Inazuma Cube Device | `ser/2025/inazumacubedevice` | `ser/2025/scdiv2-1.pdf` | [inazumacubedevice](https://open.kattis.com/problems/inazumacubedevice) | [35371](https://solved.ac/problems/35371) | | **J** | Game of Nines | `ser/2025/gameofnines` | `ser/2025/scdiv2-1.pdf` | [gameofnines](https://open.kattis.com/problems/gameofnines) | [35363](https://solved.ac/problems/35363) | | **K** | Swap for Palindrome | `ser/2025/swapforpalindrome` | `ser/2025/scdiv2-1.pdf` | [swapforpalindrome](https://open.kattis.com/problems/swapforpalindrome) | [35364](https://solved.ac/problems/35364) | | **L** | Moonlit Time Machine | `ser/2025/moonlittimemachine` | `ser/2025/scdiv2-1.pdf` | [moonlittimemachine](https://open.kattis.com/problems/moonlittimemachine) | [35372](https://solved.ac/problems/35372) | | **M** | Much Room for Mushrooms | `ser/2025/muchroomformushrooms` | `ser/2025/scdiv2-1.pdf` | [muchroomformushrooms](https://open.kattis.com/problems/muchroomformushrooms) | [35366](https://solved.ac/problems/35366) | --- ## Seoul Regional Contest (2023) - **Contest Slug:** `soeul` - **Year:** 2023 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4058) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------- | :-------------------------------------- | :-------------------------- | :----: | :---------------------------------------: | | **A** | Apricot Seeds | `soeul/2023/regional/A_ApricotSeeds` | `soeul/2023/problemset.pdf` | - | [30852](https://solved.ac/problems/30852) | | **B** | Black Box | `soeul/2023/regional/B_BlackBox` | `soeul/2023/problemset.pdf` | - | [30853](https://solved.ac/problems/30853) | | **C** | Farm | `soeul/2023/regional/C_Farm` | `soeul/2023/problemset.pdf` | - | [30854](https://solved.ac/problems/30854) | | **D** | Fraction | `soeul/2023/regional/D_Fraction` | `soeul/2023/problemset.pdf` | - | [30855](https://solved.ac/problems/30855) | | **E** | Lottery | `soeul/2023/regional/E_KLottery` | `soeul/2023/problemset.pdf` | - | [30856](https://solved.ac/problems/30856) | | **F** | Lucky Draws | `soeul/2023/regional/F_LuckyDraws` | `soeul/2023/problemset.pdf` | - | [30857](https://solved.ac/problems/30857) | | **G** | Magic Cards | `soeul/2023/regional/G_MagicCards` | `soeul/2023/problemset.pdf` | - | [30858](https://solved.ac/problems/30858) | | **H** | S. I. S. | `soeul/2023/regional/H_MSIS` | `soeul/2023/problemset.pdf` | - | [30859](https://solved.ac/problems/30859) | | **I** | Product Delivery | `soeul/2023/regional/I_ProductDelivery` | `soeul/2023/problemset.pdf` | - | [30860](https://solved.ac/problems/30860) | | **J** | Special Numbers | `soeul/2023/regional/J_SpecialNumbers` | `soeul/2023/problemset.pdf` | - | [30861](https://solved.ac/problems/30861) | | **K** | Tandem Copy | `soeul/2023/regional/K_TandemCopy` | `soeul/2023/problemset.pdf` | - | [30862](https://solved.ac/problems/30862) | | **L** | Walk Swapping | `soeul/2023/regional/L_WalkSwapping` | `soeul/2023/problemset.pdf` | - | [30863](https://solved.ac/problems/30863) | --- ## Southwestern Europe Regional Contest (2010) - **Contest Slug:** `swerc` - **Year:** 2010 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Southwestern%20Europe%20Regional%20Contest%20%28SWERC%29%202010) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/59) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------- | :---------------- | :------------------------- | :-------------------------------------------------------------------: | :-------------------------------------: | | **A** | Lawn mower | `swerc/2010/A` | `swerc/2010/SWERC-set.pdf` | [lawnmower](https://open.kattis.com/problems/lawnmower) | [3845](https://solved.ac/problems/3845) | | **B** | Periodic points | `swerc/2010/B` | `swerc/2010/SWERC-set.pdf` | [periodicpoints](https://open.kattis.com/problems/periodicpoints) | [3846](https://solved.ac/problems/3846) | | **C** | Comparing answers | `swerc/2010/C` | `swerc/2010/SWERC-set.pdf` | [comparinganswers](https://open.kattis.com/problems/comparinganswers) | [3847](https://solved.ac/problems/3847) | | **D** | Fake scoreboard | `swerc/2010/D` | `swerc/2010/SWERC-set.pdf` | [fakescoreboard](https://open.kattis.com/problems/fakescoreboard) | [3848](https://solved.ac/problems/3848) | | **E** | Palindromic DNA | `swerc/2010/E` | `swerc/2010/SWERC-set.pdf` | [palindromicdna](https://open.kattis.com/problems/palindromicdna) | [3849](https://solved.ac/problems/3849) | | **F** | Jumping monkey | `swerc/2010/F` | `swerc/2010/SWERC-set.pdf` | [jumpingmonkey](https://open.kattis.com/problems/jumpingmonkey) | [3850](https://solved.ac/problems/3850) | | **G** | Sensor network | `swerc/2010/G` | `swerc/2010/SWERC-set.pdf` | [sensornetwork](https://open.kattis.com/problems/sensornetwork) | [3851](https://solved.ac/problems/3851) | | **H** | Assembly line | `swerc/2010/H` | `swerc/2010/SWERC-set.pdf` | [assemblyline](https://open.kattis.com/problems/assemblyline) | [3852](https://solved.ac/problems/3852) | | **I** | Locks and keys | `swerc/2010/I` | `swerc/2010/SWERC-set.pdf` | - | [3853](https://solved.ac/problems/3853) | | **J** | 3-sided dice | `swerc/2010/J` | `swerc/2010/SWERC-set.pdf` | [3sideddice](https://open.kattis.com/problems/3sideddice) | [3854](https://solved.ac/problems/3854) | --- ## Southwestern Europe Regional Contest (2014) - **Contest Slug:** `swerc` - **Year:** 2014 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Southwestern%20Europe%20Regional%20Contest%20%28SWERC%29%202014) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1313) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------- | :---------------- | :-------------------------- | :-----------------------------------------------------------------------: | :---------------------------------------: | | **A** | GREAT + SWERC = PORTO | `swerc/2014/a` | `swerc/2014/problemset.pdf` | [greatswercporto](https://open.kattis.com/problems/greatswercporto) | [10529](https://solved.ac/problems/10529) | | **B** | Flowery Trails | `swerc/2014/b` | `swerc/2014/problemset.pdf` | [flowerytrails](https://open.kattis.com/problems/flowerytrails) | [10530](https://solved.ac/problems/10530) | | **C** | Golf Bot | `swerc/2014/c` | `swerc/2014/problemset.pdf` | [golfbot](https://open.kattis.com/problems/golfbot) | [10531](https://solved.ac/problems/10531) | | **D** | Book Club | `swerc/2014/d` | `swerc/2014/problemset.pdf` | [bookclub](https://open.kattis.com/problems/bookclub) | [10532](https://solved.ac/problems/10532) | | **E** | Ricochet Robots | `swerc/2014/e` | `swerc/2014/problemset.pdf` | [ricochetrobots](https://open.kattis.com/problems/ricochetrobots) | [10533](https://solved.ac/problems/10533) | | **F** | City Park | `swerc/2014/f` | `swerc/2014/problemset.pdf` | [citypark](https://open.kattis.com/problems/citypark) | [10534](https://solved.ac/problems/10534) | | **G** | Playing with Geometry | `swerc/2014/g` | `swerc/2014/problemset.pdf` | [geometry](https://open.kattis.com/problems/geometry) | [10535](https://solved.ac/problems/10535) | | **H** | Money Transfers | `swerc/2014/h` | `swerc/2014/problemset.pdf` | [moneytransfers](https://open.kattis.com/problems/moneytransfers) | [10536](https://solved.ac/problems/10536) | | **I** | The Safe Secret | `swerc/2014/i` | `swerc/2014/problemset.pdf` | [safesecret](https://open.kattis.com/problems/safesecret) | [10537](https://solved.ac/problems/10537) | | **J** | The Big Painting | `swerc/2014/j` | `swerc/2014/problemset.pdf` | [bigpainting](https://open.kattis.com/problems/bigpainting) | [10538](https://solved.ac/problems/10538) | --- ## Southwestern Europe Regional Contest (2016) - **Contest Slug:** `swerc` - **Year:** 2016 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Southwestern%20Europe%20Regional%20Contest%20%28SWERC%29%202016) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1581) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------------------- | :---------------- | :-------------------------- | :---------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Within Arm's Reach | `swerc/2016/A` | `swerc/2016/problemset.pdf` | [withinarmsreach](https://open.kattis.com/problems/withinarmsreach) | [13957](https://solved.ac/problems/13957) | | **B** | Bribing Eve | `swerc/2016/B` | `swerc/2016/problemset.pdf` | [bribingeve](https://open.kattis.com/problems/bribingeve) | [13958](https://solved.ac/problems/13958) | | **C** | Candle Box | `swerc/2016/C` | `swerc/2016/problemset.pdf` | [candlebox](https://open.kattis.com/problems/candlebox) | [13959](https://solved.ac/problems/13959) | | **D** | Dinner Bet | `swerc/2016/D` | `swerc/2016/problemset.pdf` | [dinnerbet](https://open.kattis.com/problems/dinnerbet) | [13960](https://solved.ac/problems/13960) | | **E** | Passwords | `swerc/2016/E` | `swerc/2016/problemset.pdf` | [passwords](https://open.kattis.com/problems/passwords) | [13961](https://solved.ac/problems/13961) | | **F** | Performance Review | `swerc/2016/F` | `swerc/2016/problemset.pdf` | [review](https://open.kattis.com/problems/review) | [13962](https://solved.ac/problems/13962) | | **G** | Cairo Corridor | `swerc/2016/G` | `swerc/2016/problemset.pdf` | [cairocorridor](https://open.kattis.com/problems/cairocorridor) | [13963](https://solved.ac/problems/13963) | | **H** | Pascal's Hyper-Pyramids | `swerc/2016/H` | `swerc/2016/problemset.pdf` | [hyperpyramids](https://open.kattis.com/problems/hyperpyramids) | [13964](https://solved.ac/problems/13964) | | **I** | The White Rabbit Pocket Watch | `swerc/2016/I` | `swerc/2016/problemset.pdf` | [whiterabbit](https://open.kattis.com/problems/whiterabbit) | [13965](https://solved.ac/problems/13965) | | **J** | Risky Lottery | `swerc/2016/J` | `swerc/2016/problemset.pdf` | [riskylottery](https://open.kattis.com/problems/riskylottery) | [13966](https://solved.ac/problems/13966) | | **K** | Balls and Needles | `swerc/2016/K` | `swerc/2016/problemset.pdf` | [ballsandneedles](https://open.kattis.com/problems/ballsandneedles) | [13967](https://solved.ac/problems/13967) | --- ## Southwestern Europe Regional Contest (2017) - **Contest Slug:** `swerc` - **Year:** 2017 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/Southwestern%20Europe%20Regional%20Contest%20%28SWERC%29%202017) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1826) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------- | :---------------------------------- | :---------------------------------------------- | :-----------------------------------------------------------------: | :---------------------------------------: | | **A** | Cakey McCakeFace | `swerc/2017/cakeymccakeface` | `swerc/2017/swerc.pdf` | [cakeymccakeface](https://open.kattis.com/problems/cakeymccakeface) | [15410](https://solved.ac/problems/15410) | | **B** | Table | `swerc/2017/table` | `swerc/2017/swerc.pdf` | [table](https://open.kattis.com/problems/table) | [15411](https://solved.ac/problems/15411) | | **C** | Macarons | `swerc/2017/macarons` | `swerc/2017/swerc.pdf` | [macarons](https://open.kattis.com/problems/macarons) | [15412](https://solved.ac/problems/15412) | | **D** | Candy Chain | `swerc/2017/candychain` | `swerc/2017/swerc.pdf` | [candychain](https://open.kattis.com/problems/candychain) | [15413](https://solved.ac/problems/15413) | | **E** | Ingredients | `swerc/2017/ingredients` | `swerc/2017/swerc.pdf` | [ingredients](https://open.kattis.com/problems/ingredients) | [15414](https://solved.ac/problems/15414) | | **F** | Shattered Cake | `swerc/2017/shatteredcake` | `swerc/2017/swerc.pdf` | [shatteredcake](https://open.kattis.com/problems/shatteredcake) | [15415](https://solved.ac/problems/15415) | | **G** | Cordon Bleu | `swerc/2017/cordonbleu` | `swerc/2017/swerc.pdf` | [cordonbleu](https://open.kattis.com/problems/cordonbleu) | [15416](https://solved.ac/problems/15416) | | **H** | Kabobs | `swerc/2017/kabobs` | `swerc/2017/swerc.pdf` | [kabobs](https://open.kattis.com/problems/kabobs) | [15417](https://solved.ac/problems/15417) | | **I** | Burglary | `swerc/2017/burglary` | `swerc/2017/swerc.pdf` | [burglary](https://open.kattis.com/problems/burglary) | [15418](https://solved.ac/problems/15418) | | **J** | Frosting on the Cake | `swerc/2017/frosting` | `swerc/2017/swerc.pdf` | [frosting](https://open.kattis.com/problems/frosting) | [15419](https://solved.ac/problems/15419) | | **K** | Blowing Candles | `swerc/2017/blowingcandles` | `swerc/2017/swerc.pdf` | [blowingcandles](https://open.kattis.com/problems/blowingcandles) | [15420](https://solved.ac/problems/15420) | ### Practice Session | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------- | :---------------------------------- | :---------------------------------------------- | :-----------------------------------------------------------------: | :---------------------------------------: | | **A** | Majestic Gourmet University | `swerc/2017/practice/majestic` | `swerc/2017/practice/majestic/problem.pdf` | - | - | | **B** | French Dinner | `swerc/2017/practice/frenchdinner` | `swerc/2017/practice/frenchdinner/problem.pdf` | - | - | | **C** | Check the Check | `swerc/2017/practice/checkthecheck` | `swerc/2017/practice/checkthecheck/problem.pdf` | - | - | | **D** | Menu Tour | `swerc/2017/practice/menutour` | `swerc/2017/practice/menutour/problem.pdf` | - | - | | **E** | How to Eat at a Buffet | `swerc/2017/practice/buffet` | `swerc/2017/practice/buffet/problem.pdf` | - | - | --- ## Southwestern Europe Regional Contest (2018) - **Contest Slug:** `swerc` - **Year:** 2018 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2067) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------- | :--------------------------- | :--------------------- | :----: | :---------------------------------------: | | **A** | City of Lights | `swerc/2018/citylights` | `swerc/2018/swerc.pdf` | - | [17554](https://solved.ac/problems/17554) | | **B** | Blurred Pictures | `swerc/2018/blurredpictures` | `swerc/2018/swerc.pdf` | - | [17555](https://solved.ac/problems/17555) | | **C** | Crosswords | `swerc/2018/crosswords` | `swerc/2018/swerc.pdf` | - | [17556](https://solved.ac/problems/17556) | | **D** | Monument Tour | `swerc/2018/monumenttour` | `swerc/2018/swerc.pdf` | - | [17557](https://solved.ac/problems/17557) | | **E** | Rounding | `swerc/2018/rounding` | `swerc/2018/swerc.pdf` | - | [17558](https://solved.ac/problems/17558) | | **F** | Paris by Night | `swerc/2018/parisbynight` | `swerc/2018/swerc.pdf` | - | [17559](https://solved.ac/problems/17559) | | **G** | Strings | `swerc/2018/strings` | `swerc/2018/swerc.pdf` | - | [17560](https://solved.ac/problems/17560) | | **H** | Travel Guide | `swerc/2018/travelguide` | `swerc/2018/swerc.pdf` | - | [17561](https://solved.ac/problems/17561) | | **I** | Mason's Mark | `swerc/2018/masonsmark` | `swerc/2018/swerc.pdf` | - | [17562](https://solved.ac/problems/17562) | | **J** | Mona Lisa | `swerc/2018/monalisa` | `swerc/2018/swerc.pdf` | - | [17563](https://solved.ac/problems/17563) | | **K** | Dishonest Driver | `swerc/2018/dishonestdriver` | `swerc/2018/swerc.pdf` | - | [17564](https://solved.ac/problems/17564) | --- ## Southwestern Europe Regional Contest (2019) - **Contest Slug:** `swerc` - **Year:** 2019 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2148) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------------- | :------------------------- | :--------------------- | :----: | :---------------------------------------: | | **A** | Environment-Friendly Travel | `swerc/2019/travel` | `swerc/2019/swerc.pdf` | - | [18293](https://solved.ac/problems/18293) | | **B** | Biodiversity | `swerc/2019/biodiversity` | `swerc/2019/swerc.pdf` | - | [18294](https://solved.ac/problems/18294) | | **C** | Ants | `swerc/2019/ants` | `swerc/2019/swerc.pdf` | - | [18295](https://solved.ac/problems/18295) | | **D** | Gnalcats | `swerc/2019/gnalcats` | `swerc/2019/swerc.pdf` | - | [18296](https://solved.ac/problems/18296) | | **E** | Pixels | `swerc/2019/pixels` | `swerc/2019/swerc.pdf` | - | [18297](https://solved.ac/problems/18297) | | **F** | Icebergs | `swerc/2019/icebergs` | `swerc/2019/swerc.pdf` | - | [18298](https://solved.ac/problems/18298) | | **G** | Swapping Places | `swerc/2019/commutation` | `swerc/2019/swerc.pdf` | - | [18299](https://solved.ac/problems/18299) | | **H** | Pseudo-Random Number Generator | `swerc/2019/prng` | `swerc/2019/swerc.pdf` | - | [18300](https://solved.ac/problems/18300) | | **I** | Rats | `swerc/2019/rats` | `swerc/2019/swerc.pdf` | - | [18301](https://solved.ac/problems/18301) | | **J** | Counting Trees | `swerc/2019/countingtrees` | `swerc/2019/swerc.pdf` | - | [18302](https://solved.ac/problems/18302) | | **K** | Bird Watching | `swerc/2019/birdwatching` | `swerc/2019/swerc.pdf` | - | [18303](https://solved.ac/problems/18303) | | **L** | River Game | `swerc/2019/rivergame` | `swerc/2019/swerc.pdf` | - | [18304](https://solved.ac/problems/18304) | --- ## Southwestern Europe Regional Contest (2020) - **Contest Slug:** `swerc` - **Year:** 2020 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2465) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :---------------- | :---------------------------- | :--------------------- | :----: | :---------------------------------------: | | **A** | Gratitude | `swerc/2020/gratitude` | `swerc/2020/swerc.pdf` | - | [21208](https://solved.ac/problems/21208) | | **B** | Rule 110 | `swerc/2020/rule110` | `swerc/2020/swerc.pdf` | - | [21209](https://solved.ac/problems/21209) | | **C** | Safe Distance | `swerc/2020/safedistance` | `swerc/2020/swerc.pdf` | - | [21210](https://solved.ac/problems/21210) | | **D** | Jogging | `swerc/2020/jogging` | `swerc/2020/swerc.pdf` | - | [21211](https://solved.ac/problems/21211) | | **E** | Cakes | `swerc/2020/cakes` | `swerc/2020/swerc.pdf` | - | [21212](https://solved.ac/problems/21212) | | **F** | Mentors | `swerc/2020/hierarchy` | `swerc/2020/swerc.pdf` | - | [21213](https://solved.ac/problems/21213) | | **G** | Decoration | `swerc/2020/decoration` | `swerc/2020/swerc.pdf` | - | [21214](https://solved.ac/problems/21214) | | **H** | Figurines | `swerc/2020/sets` | `swerc/2020/swerc.pdf` | - | [21215](https://solved.ac/problems/21215) | | **I** | Emails | `swerc/2020/emails` | `swerc/2020/swerc.pdf` | - | [21216](https://solved.ac/problems/21216) | | **J** | Daisy's Mazes | `swerc/2020/daisysMazes` | `swerc/2020/swerc.pdf` | - | [21217](https://solved.ac/problems/21217) | | **K** | Unique Activities | `swerc/2020/uniqueactivities` | `swerc/2020/swerc.pdf` | - | [21218](https://solved.ac/problems/21218) | | **L** | Restaurants | `swerc/2020/restaurants` | `swerc/2020/swerc.pdf` | - | [21219](https://solved.ac/problems/21219) | | **M** | Fantasmagorie | `swerc/2020/fantasmagorie` | `swerc/2020/swerc.pdf` | - | [21220](https://solved.ac/problems/21220) | --- ## Southwestern Europe Regional Contest (2021) - **Contest Slug:** `swerc` - **Year:** 2021 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/3100) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------- | :---------------- | :-------------------------------- | :----: | :---------------------------------------: | | **A** | Organizing SWERC | `swerc/2021/A` | `swerc/2021/A_swerc2021_2022.pdf` | - | [25053](https://solved.ac/problems/25053) | | **B** | Drone Photo | `swerc/2021/B` | `swerc/2021/B_swerc2021_2022.pdf` | - | [25054](https://solved.ac/problems/25054) | | **C** | Il Derby della Madonnina | `swerc/2021/C` | `swerc/2021/C_swerc2021_2022.pdf` | - | [25055](https://solved.ac/problems/25055) | | **D** | Ice Cream Shop | `swerc/2021/D` | `swerc/2021/D_swerc2021_2022.pdf` | - | [25056](https://solved.ac/problems/25056) | | **E** | Evolution of Weasels | `swerc/2021/E` | `swerc/2021/E_swerc2021_2022.pdf` | - | [25057](https://solved.ac/problems/25057) | | **F** | Bottle Arrangements | `swerc/2021/F` | `swerc/2021/F_swerc2021_2022.pdf` | - | [25058](https://solved.ac/problems/25058) | | **G** | Round Table | `swerc/2021/G` | `swerc/2021/G_swerc2021_2022.pdf` | - | [25059](https://solved.ac/problems/25059) | | **H** | Pandemic Restrictions | `swerc/2021/H` | `swerc/2021/H_swerc2021_2022.pdf` | - | [25060](https://solved.ac/problems/25060) | | **I** | Antennas | `swerc/2021/I` | `swerc/2021/I_swerc2021_2022.pdf` | - | [25061](https://solved.ac/problems/25061) | | **J** | Boundary | `swerc/2021/J` | `swerc/2021/J_swerc2021_2022.pdf` | - | [25062](https://solved.ac/problems/25062) | | **K** | Gastronomic Event | `swerc/2021/K` | `swerc/2021/K_swerc2021_2022.pdf` | - | [25063](https://solved.ac/problems/25063) | | **L** | Circular Maze | `swerc/2021/L` | `swerc/2021/L_swerc2021_2022.pdf` | - | [25064](https://solved.ac/problems/25064) | --- ## Southwestern Europe Regional Contest (2022) - **Contest Slug:** `swerc` - **Year:** 2022 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/3518) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------------------ | :---------------- | :----------------------------------------- | :----: | :---------------------------------------: | | **A** | Walking Boy | `swerc/2022/A` | `swerc/2022/problemset_swerc2022_2023.pdf` | - | [27593](https://solved.ac/problems/27593) | | **B** | Uniform Chemistry | `swerc/2022/B` | `swerc/2022/problemset_swerc2022_2023.pdf` | - | [27594](https://solved.ac/problems/27594) | | **C** | Another Wine Tasting Event | `swerc/2022/C` | `swerc/2022/problemset_swerc2022_2023.pdf` | - | [27595](https://solved.ac/problems/27595) | | **D** | Crossing the Railways | `swerc/2022/D` | `swerc/2022/problemset_swerc2022_2023.pdf` | - | [27596](https://solved.ac/problems/27596) | | **E** | Spinach Pizza | `swerc/2022/E` | `swerc/2022/problemset_swerc2022_2023.pdf` | - | [27597](https://solved.ac/problems/27597) | | **F** | Beppa and SwerChat | `swerc/2022/F` | `swerc/2022/problemset_swerc2022_2023.pdf` | - | [27598](https://solved.ac/problems/27598) | | **G** | Parmigiana With Seafood | `swerc/2022/G` | `swerc/2022/problemset_swerc2022_2023.pdf` | - | [27599](https://solved.ac/problems/27599) | | **H** | Controllers | `swerc/2022/H` | `swerc/2022/problemset_swerc2022_2023.pdf` | - | [27600](https://solved.ac/problems/27600) | | **I** | Library game | `swerc/2022/I` | `swerc/2022/problemset_swerc2022_2023.pdf` | - | [27601](https://solved.ac/problems/27601) | | **J** | Italian Data Centers | `swerc/2022/J` | `swerc/2022/problemset_swerc2022_2023.pdf` | - | [27602](https://solved.ac/problems/27602) | | **K** | Train Splitting | `swerc/2022/K` | `swerc/2022/problemset_swerc2022_2023.pdf` | - | [27603](https://solved.ac/problems/27603) | | **L** | Vittorio Plays with LEGO Bricks | `swerc/2022/L` | `swerc/2022/problemset_swerc2022_2023.pdf` | - | [27604](https://solved.ac/problems/27604) | --- ## Southwestern Europe Regional Contest (2023) - **Contest Slug:** `swerc` - **Year:** 2023 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4151) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------------------- | :---------------- | :-------------------------------- | :----: | :---------------------------------------: | | **A** | Card game | `swerc/2023/A` | `swerc/2023/contest-problems.pdf` | - | [31482](https://solved.ac/problems/31482) | | **B** | Supporting everyone | `swerc/2023/B` | `swerc/2023/contest-problems.pdf` | - | [31483](https://solved.ac/problems/31483) | | **C** | Metro quiz | `swerc/2023/C` | `swerc/2023/contest-problems.pdf` | - | [31484](https://solved.ac/problems/31484) | | **D** | Flag performance | `swerc/2023/D` | `swerc/2023/contest-problems.pdf` | - | [31485](https://solved.ac/problems/31485) | | **E** | Nicest view | `swerc/2023/E` | `swerc/2023/contest-problems.pdf` | - | [31486](https://solved.ac/problems/31486) | | **F** | Programming-trampoline-athlon! | `swerc/2023/F` | `swerc/2023/contest-problems.pdf` | - | [31487](https://solved.ac/problems/31487) | | **G** | Favourite dish | `swerc/2023/G` | `swerc/2023/contest-problems.pdf` | - | [31488](https://solved.ac/problems/31488) | | **H** | Break a leg! | `swerc/2023/H` | `swerc/2023/contest-problems.pdf` | - | [31489](https://solved.ac/problems/31489) | | **I** | Throwing dice | `swerc/2023/I` | `swerc/2023/contest-problems.pdf` | - | [31490](https://solved.ac/problems/31490) | | **J** | Olympic goodies | `swerc/2023/J` | `swerc/2023/contest-problems.pdf` | - | [31491](https://solved.ac/problems/31491) | | **K** | Team selection | `swerc/2023/K` | `swerc/2023/contest-problems.pdf` | - | [31492](https://solved.ac/problems/31492) | | **L** | Broken trophy | `swerc/2023/L` | `swerc/2023/contest-problems.pdf` | - | [31493](https://solved.ac/problems/31493) | | **M** | In-order | `swerc/2023/M` | `swerc/2023/contest-problems.pdf` | - | [31494](https://solved.ac/problems/31494) | --- ## United Kingdom & Ireland Evening Programming Contest (2015) - **Contest Slug:** `ukiepc` - **Year:** 2015 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/United%20Kingdom%20and%20Ireland%20Programming%20Contest%20%28UKIEPC%29%202015) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1412) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------- | :------------------------- | :---------------------------------------- | :-------------------------------------------------------------------: | :---------------------------------------: | | **A** | Aqueduct Construction | `ukiepc/2015/aqueducts` | `ukiepc/2015/UKIEPC-2015-problem-set.pdf` | [aqueducts](https://open.kattis.com/problems/aqueducts) | [11480](https://solved.ac/problems/11480) | | **B** | Mountain Biking | `ukiepc/2015/bikers` | `ukiepc/2015/UKIEPC-2015-problem-set.pdf` | [mountainbiking](https://open.kattis.com/problems/mountainbiking) | [11481](https://solved.ac/problems/11481) | | **C** | Conversation Log | `ukiepc/2015/conversation` | `ukiepc/2015/UKIEPC-2015-problem-set.pdf` | [conversationlog](https://open.kattis.com/problems/conversationlog) | [11482](https://solved.ac/problems/11482) | | **D** | Slant Drilling | `ukiepc/2015/drilling` | `ukiepc/2015/UKIEPC-2015-problem-set.pdf` | [slantdrilling](https://open.kattis.com/problems/slantdrilling) | [11483](https://solved.ac/problems/11483) | | **E** | Rainfall | `ukiepc/2015/rain` | `ukiepc/2015/UKIEPC-2015-problem-set.pdf` | [rainfall](https://open.kattis.com/problems/rainfall) | [11484](https://solved.ac/problems/11484) | | **F** | Physiognomy | `ukiepc/2015/lamps` | `ukiepc/2015/UKIEPC-2015-problem-set.pdf` | [physiognomy](https://open.kattis.com/problems/physiognomy) | [11485](https://solved.ac/problems/11485) | | **G** | Drink Responsibly | `ukiepc/2015/beer` | `ukiepc/2015/UKIEPC-2015-problem-set.pdf` | [drinkresponsibly](https://open.kattis.com/problems/drinkresponsibly) | [11486](https://solved.ac/problems/11486) | | **H** | Sunlight | `ukiepc/2015/sunlight` | `ukiepc/2015/UKIEPC-2015-problem-set.pdf` | [sunlight](https://open.kattis.com/problems/sunlight) | [11487](https://solved.ac/problems/11487) | | **I** | Nimionese | `ukiepc/2015/nimionese` | `ukiepc/2015/UKIEPC-2015-problem-set.pdf` | [nimionese](https://open.kattis.com/problems/nimionese) | [11488](https://solved.ac/problems/11488) | | **J** | Jelly Raid | `ukiepc/2015/jelly` | `ukiepc/2015/UKIEPC-2015-problem-set.pdf` | [jellyraid](https://open.kattis.com/problems/jellyraid) | [11489](https://solved.ac/problems/11489) | | **K** | Call a Cab | `ukiepc/2015/cabs` | `ukiepc/2015/UKIEPC-2015-problem-set.pdf` | [callacab](https://open.kattis.com/problems/callacab) | [11490](https://solved.ac/problems/11490) | | **L** | Telescope | `ukiepc/2015/telescope` | `ukiepc/2015/UKIEPC-2015-problem-set.pdf` | [telescope](https://open.kattis.com/problems/telescope) | [11491](https://solved.ac/problems/11491) | | **M** | Milestone Counter | `ukiepc/2015/milestones` | `ukiepc/2015/UKIEPC-2015-problem-set.pdf` | [milestones](https://open.kattis.com/problems/milestones) | [11492](https://solved.ac/problems/11492) | --- ## United Kingdom & Ireland Evening Programming Contest (2016) - **Contest Slug:** `ukiepc` - **Year:** 2016 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/United%20Kingdom%20and%20Ireland%20Programming%20Contest%20%28UKIEPC%29%202016) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1542) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------- | :------------------------- | :---------------------------------- | :-----------------------------------------------------------: | :---------------------------------------: | | **A** | Taxing Problem | `ukiepc/2016/taxing` | `ukiepc/2016/ukiepc-statements.pdf` | [taxing](https://open.kattis.com/problems/taxing) | [13520](https://solved.ac/problems/13520) | | **B** | Build a Boat | `ukiepc/2016/boat` | `ukiepc/2016/ukiepc-statements.pdf` | [buildboat](https://open.kattis.com/problems/buildboat) | [13521](https://solved.ac/problems/13521) | | **C** | Compiler | `ukiepc/2016/compiler` | `ukiepc/2016/ukiepc-statements.pdf` | [compiler](https://open.kattis.com/problems/compiler) | [13522](https://solved.ac/problems/13522) | | **D** | The Darkness | `ukiepc/2016/darkness` | `ukiepc/2016/ukiepc-statements.pdf` | [darkness](https://open.kattis.com/problems/darkness) | [13523](https://solved.ac/problems/13523) | | **E** | Elegant Showroom | `ukiepc/2016/showroom` | `ukiepc/2016/ukiepc-statements.pdf` | [showroom](https://open.kattis.com/problems/showroom) | [13524](https://solved.ac/problems/13524) | | **F** | Fridge | `ukiepc/2016/fridge` | `ukiepc/2016/ukiepc-statements.pdf` | [fridge](https://open.kattis.com/problems/fridge) | [13525](https://solved.ac/problems/13525) | | **G** | Gondolas | `ukiepc/2016/gondola` | `ukiepc/2016/ukiepc-statements.pdf` | [gondolas](https://open.kattis.com/problems/gondolas) | [13526](https://solved.ac/problems/13526) | | **H** | Rhyming Slang | `ukiepc/2016/rhyming` | `ukiepc/2016/ukiepc-statements.pdf` | [rhyming](https://open.kattis.com/problems/rhyming) | [13527](https://solved.ac/problems/13527) | | **I** | Grass Seed Inc. | `ukiepc/2016/grass` | `ukiepc/2016/ukiepc-statements.pdf` | [grassseed](https://open.kattis.com/problems/grassseed) | [13528](https://solved.ac/problems/13528) | | **J** | Jack and the Beanbag | `ukiepc/2016/beanbag` | `ukiepc/2016/ukiepc-statements.pdf` | [beanbag](https://open.kattis.com/problems/beanbag) | [13529](https://solved.ac/problems/13529) | | **K** | Compensation | `ukiepc/2016/compensation` | `ukiepc/2016/ukiepc-statements.pdf` | [compensation](https://open.kattis.com/problems/compensation) | [13530](https://solved.ac/problems/13530) | | **L** | Secret Santa | `ukiepc/2016/santa` | `ukiepc/2016/ukiepc-statements.pdf` | [secretsanta](https://open.kattis.com/problems/secretsanta) | [13531](https://solved.ac/problems/13531) | --- ## United Kingdom & Ireland Evening Programming Contest (2017) - **Contest Slug:** `ukiepc` - **Year:** 2017 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/United%20Kingdom%20and%20Ireland%20Programming%20Contest%20%28UKIEPC%29%202017) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/1785) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :------------------ | :------------------------- | :------------------------------------- | :-----------------------------------------------------------------------: | :---------------------------------------: | | **A** | Alien Sunset | `ukiepc/2017/sunset` | `ukiepc/2017/UKIEPC 2017 Problems.pdf` | [aliensunset](https://open.kattis.com/problems/aliensunset) | [15027](https://solved.ac/problems/15027) | | **B** | Breaking Biscuits | `ukiepc/2017/biscuit` | `ukiepc/2017/UKIEPC 2017 Problems.pdf` | [breakingbiscuits](https://open.kattis.com/problems/breakingbiscuits) | [15028](https://solved.ac/problems/15028) | | **C** | Cued In | `ukiepc/2017/snooker` | `ukiepc/2017/UKIEPC 2017 Problems.pdf` | [cuedin](https://open.kattis.com/problems/cuedin) | [15029](https://solved.ac/problems/15029) | | **D** | Deranging Hat | `ukiepc/2017/disarray` | `ukiepc/2017/UKIEPC 2017 Problems.pdf` | [deranginghat](https://open.kattis.com/problems/deranginghat) | [15030](https://solved.ac/problems/15030) | | **E** | Education | `ukiepc/2017/rooms` | `ukiepc/2017/UKIEPC 2017 Problems.pdf` | [education](https://open.kattis.com/problems/education) | [15031](https://solved.ac/problems/15031) | | **F** | Flipping Coins | `ukiepc/2017/coinflip` | `ukiepc/2017/UKIEPC 2017 Problems.pdf` | [flippingcoins](https://open.kattis.com/problems/flippingcoins) | [15032](https://solved.ac/problems/15032) | | **G** | GentleBots | `ukiepc/2017/gentlerobots` | `ukiepc/2017/UKIEPC 2017 Problems.pdf` | - | [15033](https://solved.ac/problems/15033) | | **H** | Hiker Safety | `ukiepc/2017/hiking` | `ukiepc/2017/UKIEPC 2017 Problems.pdf` | [hikersafety](https://open.kattis.com/problems/hikersafety) | [15034](https://solved.ac/problems/15034) | | **I** | I Work All Day | `ukiepc/2017/chop` | `ukiepc/2017/UKIEPC 2017 Problems.pdf` | [iworkallday](https://open.kattis.com/problems/iworkallday) | [15035](https://solved.ac/problems/15035) | | **J** | Just A Minim | `ukiepc/2017/music` | `ukiepc/2017/UKIEPC 2017 Problems.pdf` | [justaminim](https://open.kattis.com/problems/justaminim) | [15036](https://solved.ac/problems/15036) | | **K** | Knightsbridge Rises | `ukiepc/2017/cranes` | `ukiepc/2017/UKIEPC 2017 Problems.pdf` | [knightsbridgerises](https://open.kattis.com/problems/knightsbridgerises) | [15037](https://solved.ac/problems/15037) | | **L** | Lounge Lizards | `ukiepc/2017/lounge` | `ukiepc/2017/UKIEPC 2017 Problems.pdf` | [loungelizards](https://open.kattis.com/problems/loungelizards) | [15038](https://solved.ac/problems/15038) | --- ## United Kingdom & Ireland Evening Programming Contest (2018) - **Contest Slug:** `ukiepc` - **Year:** 2018 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/United%20Kingdom%20and%20Ireland%20Programming%20Contest%20%28UKIEPC%29%202018) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2068) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :--------------------- | :-------------------------- | :------------------------------------- | :---------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Analogue Cluster | `ukiepc/2018/analogue` | `ukiepc/2018/UKIEPC 2018 Problems.pdf` | [analoguecluster](https://open.kattis.com/problems/analoguecluster) | [17565](https://solved.ac/problems/17565) | | **B** | Bus Logic | `ukiepc/2018/bus` | `ukiepc/2018/UKIEPC 2018 Problems.pdf` | [buslogic](https://open.kattis.com/problems/buslogic) | [17566](https://solved.ac/problems/17566) | | **C** | Code Word | `ukiepc/2018/codeword` | `ukiepc/2018/UKIEPC 2018 Problems.pdf` | [codeword](https://open.kattis.com/problems/codeword) | [17567](https://solved.ac/problems/17567) | | **D** | Dynamo Wheel | `ukiepc/2018/dynamo` | `ukiepc/2018/UKIEPC 2018 Problems.pdf` | [dynamowheel](https://open.kattis.com/problems/dynamowheel) | [17568](https://solved.ac/problems/17568) | | **E** | Evenly Divided | `ukiepc/2018/evenly` | `ukiepc/2018/UKIEPC 2018 Problems.pdf` | [evenlydivided](https://open.kattis.com/problems/evenlydivided) | [17569](https://solved.ac/problems/17569) | | **F** | Fibonacci Compression | `ukiepc/2018/fibonacci` | `ukiepc/2018/UKIEPC 2018 Problems.pdf` | [fibonaccicompression](https://open.kattis.com/problems/fibonaccicompression) | [17570](https://solved.ac/problems/17570) | | **G** | Garden Variety Vampire | `ukiepc/2018/gardenvampire` | `ukiepc/2018/UKIEPC 2018 Problems.pdf` | [gardenvarietyvampire](https://open.kattis.com/problems/gardenvarietyvampire) | [17571](https://solved.ac/problems/17571) | | **H** | Hamster Ball | `ukiepc/2018/hamster` | `ukiepc/2018/UKIEPC 2018 Problems.pdf` | [hamsterball](https://open.kattis.com/problems/hamsterball) | [17572](https://solved.ac/problems/17572) | | **I** | Internet Upload | `ukiepc/2018/internet` | `ukiepc/2018/UKIEPC 2018 Problems.pdf` | [internetupload](https://open.kattis.com/problems/internetupload) | [17573](https://solved.ac/problems/17573) | | **J** | Jackpot | `ukiepc/2018/jackpot` | `ukiepc/2018/UKIEPC 2018 Problems.pdf` | [jackpot2](https://open.kattis.com/problems/jackpot2) | [17574](https://solved.ac/problems/17574) | | **K** | Kings | `ukiepc/2018/kings` | `ukiepc/2018/UKIEPC 2018 Problems.pdf` | [kings](https://open.kattis.com/problems/kings) | [17575](https://solved.ac/problems/17575) | | **L** | Last Word | `ukiepc/2018/lastword` | `ukiepc/2018/UKIEPC 2018 Problems.pdf` | [lastword](https://open.kattis.com/problems/lastword) | [17576](https://solved.ac/problems/17576) | --- ## United Kingdom & Ireland Evening Programming Contest (2019) - **Contest Slug:** `ukiepc` - **Year:** 2019 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/United%20Kingdom%20and%20Ireland%20Programming%20Contest%20%28UKIEPC%29%202019) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2095) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------- | :-------------------------------- | :------------------------------------- | :-------------------------------------------------------------------------: | :---------------------------------------: | | **A** | Automatic Accountant | `ukiepc/2019/automaticaccountant` | `ukiepc/2019/UKIEPC 2019 Problems.pdf` | [automaticaccountant](https://open.kattis.com/problems/automaticaccountant) | [17794](https://solved.ac/problems/17794) | | **B** | Ballpark Estimate | `ukiepc/2019/ballpark` | `ukiepc/2019/UKIEPC 2019 Problems.pdf` | [ballparkestimate](https://open.kattis.com/problems/ballparkestimate) | [17795](https://solved.ac/problems/17795) | | **C** | Crooked Dealing | `ukiepc/2019/crookeddealing` | `ukiepc/2019/UKIEPC 2019 Problems.pdf` | [crookeddealing](https://open.kattis.com/problems/crookeddealing) | [17796](https://solved.ac/problems/17796) | | **D** | Dome Construction | `ukiepc/2019/dome` | `ukiepc/2019/UKIEPC 2019 Problems.pdf` | [domeconstruction](https://open.kattis.com/problems/domeconstruction) | [17797](https://solved.ac/problems/17797) | | **E** | Estate Agent | `ukiepc/2019/estateagent` | `ukiepc/2019/UKIEPC 2019 Problems.pdf` | [estateagent](https://open.kattis.com/problems/estateagent) | [17798](https://solved.ac/problems/17798) | | **F** | Feeding Seals | `ukiepc/2019/feedingseals` | `ukiepc/2019/UKIEPC 2019 Problems.pdf` | [feedingseals](https://open.kattis.com/problems/feedingseals) | [17799](https://solved.ac/problems/17799) | | **G** | Grand Central Station | `ukiepc/2019/grandcentral` | `ukiepc/2019/UKIEPC 2019 Problems.pdf` | [grandcentralstation](https://open.kattis.com/problems/grandcentralstation) | [17800](https://solved.ac/problems/17800) | | **H** | Hat Stand | `ukiepc/2019/hatstand` | `ukiepc/2019/UKIEPC 2019 Problems.pdf` | [hatstand](https://open.kattis.com/problems/hatstand) | [17801](https://solved.ac/problems/17801) | | **I** | Integral Pyramid | `ukiepc/2019/integralpyramid` | `ukiepc/2019/UKIEPC 2019 Problems.pdf` | [integralpyramid](https://open.kattis.com/problems/integralpyramid) | [17802](https://solved.ac/problems/17802) | | **J** | Jammed Gym | `ukiepc/2019/jammedgym` | `ukiepc/2019/UKIEPC 2019 Problems.pdf` | [jammedgym](https://open.kattis.com/problems/jammedgym) | [17803](https://solved.ac/problems/17803) | | **K** | Knocked Ink | `ukiepc/2019/knockedink` | `ukiepc/2019/UKIEPC 2019 Problems.pdf` | [knockedink](https://open.kattis.com/problems/knockedink) | [17804](https://solved.ac/problems/17804) | | **L** | Low Effort League | `ukiepc/2019/loweffortleague` | `ukiepc/2019/UKIEPC 2019 Problems.pdf` | [loweffortleague](https://open.kattis.com/problems/loweffortleague) | [17805](https://solved.ac/problems/17805) | | **M** | Mosaic Mansion | `ukiepc/2019/mosaic` | `ukiepc/2019/UKIEPC 2019 Problems.pdf` | [mosaicmansion](https://open.kattis.com/problems/mosaicmansion) | [17806](https://solved.ac/problems/17806) | --- ## United Kingdom & Ireland Evening Programming Contest (2020) - **Contest Slug:** `ukiepc` - **Year:** 2020 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/United%20Kingdom%20and%20Ireland%20Programming%20Contest%20%28UKIEPC%29%202020) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/2358) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------- | :------------------------------------- | :------------------------------------- | :-----------------------------------------------------------: | :---------------------------------------: | | **A** | Aquarium | `ukiepc/2020/aquariumarrangement` | `ukiepc/2020/UKIEPC 2020 Problems.pdf` | - | [20329](https://solved.ac/problems/20329) | | **B** | Bidirectional Code | `ukiepc/2020/balancedbreakdown` | `ukiepc/2020/UKIEPC 2020 Problems.pdf` | - | [20330](https://solved.ac/problems/20330) | | **C** | Corrupt Judge | `ukiepc/2020/corruptedcontest` | `ukiepc/2020/UKIEPC 2020 Problems.pdf` | - | [20331](https://solved.ac/problems/20331) | | **D** | Divvying Up | `ukiepc/2020/divvyingup` | `ukiepc/2020/UKIEPC 2020 Problems.pdf` | [divvyingup](https://open.kattis.com/problems/divvyingup) | [20332](https://solved.ac/problems/20332) | | **E** | Elevator Pitch | `ukiepc/2020/efficientlyelevated` | `ukiepc/2020/UKIEPC 2020 Problems.pdf` | - | [20333](https://solved.ac/problems/20333) | | **F** | Family Fares | `ukiepc/2020/familyfares` | `ukiepc/2020/UKIEPC 2020 Problems.pdf` | - | [20334](https://solved.ac/problems/20334) | | **G** | Generators | `ukiepc/2020/generatorgrid` | `ukiepc/2020/UKIEPC 2020 Problems.pdf` | - | [20335](https://solved.ac/problems/20335) | | **H** | Haughty Cuisine | `ukiepc/2020/hungryhenk` | `ukiepc/2020/UKIEPC 2020 Problems.pdf` | - | [20336](https://solved.ac/problems/20336) | | **I** | Incomplete Sort | `ukiepc/2020/incompleteimplementation` | `ukiepc/2020/UKIEPC 2020 Problems.pdf` | - | [20337](https://solved.ac/problems/20337) | | **J** | Jigsaw | `ukiepc/2020/jigsaw` | `ukiepc/2020/UKIEPC 2020 Problems.pdf` | - | [20338](https://solved.ac/problems/20338) | | **K** | Kleptocrat | `ukiepc/2020/kleptocrat` | `ukiepc/2020/UKIEPC 2020 Problems.pdf` | - | [20339](https://solved.ac/problems/20339) | | **L** | Lost Map | `ukiepc/2020/lostmap` | `ukiepc/2020/UKIEPC 2020 Problems.pdf` | [lostmap2](https://open.kattis.com/problems/lostmap2) | [20340](https://solved.ac/problems/20340) | | **M** | Moderate Pace | `ukiepc/2020/moderatepace` | `ukiepc/2020/UKIEPC 2020 Problems.pdf` | [moderatepace](https://open.kattis.com/problems/moderatepace) | [20341](https://solved.ac/problems/20341) | --- ## United Kingdom & Ireland Evening Programming Contest (2023) - **Contest Slug:** `ukiepc` - **Year:** 2023 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/United%20Kingdom%20and%20Ireland%20Programming%20Contest%20%28UKIEPC%29%202023) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4017) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------- | :-------------------------- | :-------------------------------------- | :---------------------------------------------------------------------: | :---------------------------------------: | | **A** | Assessment Disruption | `ukiepc/2023/assessment` | `ukiepc/2023/UKIEPC2023-ProblemSet.pdf` | [assessment](https://open.kattis.com/problems/assessment) | [30558](https://solved.ac/problems/30558) | | **B** | Boat Commuter | `ukiepc/2023/boat` | `ukiepc/2023/UKIEPC2023-ProblemSet.pdf` | [boatcommuterline](https://open.kattis.com/problems/boatcommuterline) | [30559](https://solved.ac/problems/30559) | | **C** | Clearing Space | `ukiepc/2023/clearing` | `ukiepc/2023/UKIEPC2023-ProblemSet.pdf` | [clearing](https://open.kattis.com/problems/clearing) | [30560](https://solved.ac/problems/30560) | | **D** | Delivery Forces | `ukiepc/2023/delivery` | `ukiepc/2023/UKIEPC2023-ProblemSet.pdf` | [deliveryforces](https://open.kattis.com/problems/deliveryforces) | [30561](https://solved.ac/problems/30561) | | **E** | Enchanted Fortress | `ukiepc/2023/enchanted` | `ukiepc/2023/UKIEPC2023-ProblemSet.pdf` | [enchantedfortress](https://open.kattis.com/problems/enchantedfortress) | [30562](https://solved.ac/problems/30562) | | **F** | Fast Forward | `ukiepc/2023/fastforward` | `ukiepc/2023/UKIEPC2023-ProblemSet.pdf` | [fastforward](https://open.kattis.com/problems/fastforward) | [30563](https://solved.ac/problems/30563) | | **G** | Glacier Travel | `ukiepc/2023/glaciertravel` | `ukiepc/2023/UKIEPC2023-ProblemSet.pdf` | [glaciertravel](https://open.kattis.com/problems/glaciertravel) | [30564](https://solved.ac/problems/30564) | | **H** | History in Numbers | `ukiepc/2023/history` | `ukiepc/2023/UKIEPC2023-ProblemSet.pdf` | [historyinnumbers](https://open.kattis.com/problems/historyinnumbers) | [30565](https://solved.ac/problems/30565) | | **I** | International Travel | `ukiepc/2023/international` | `ukiepc/2023/UKIEPC2023-ProblemSet.pdf` | [international](https://open.kattis.com/problems/international) | [30566](https://solved.ac/problems/30566) | | **J** | Journey of Recovery | `ukiepc/2023/journey` | `ukiepc/2023/UKIEPC2023-ProblemSet.pdf` | [journey](https://open.kattis.com/problems/journey) | [30567](https://solved.ac/problems/30567) | | **K** | Kernel Scheduler | `ukiepc/2023/kernel` | `ukiepc/2023/UKIEPC2023-ProblemSet.pdf` | [kernelscheduler](https://open.kattis.com/problems/kernelscheduler) | [30568](https://solved.ac/problems/30568) | | **L** | Last One Standing | `ukiepc/2023/lastone` | `ukiepc/2023/UKIEPC2023-ProblemSet.pdf` | [lastone](https://open.kattis.com/problems/lastone) | [30569](https://solved.ac/problems/30569) | | **M** | Mini-Tetris 3023 | `ukiepc/2023/minitetris` | `ukiepc/2023/UKIEPC2023-ProblemSet.pdf` | [minitetris3023](https://open.kattis.com/problems/minitetris3023) | [30570](https://solved.ac/problems/30570) | | **N** | Naming Wine Bottles | `ukiepc/2023/namingwine` | `ukiepc/2023/UKIEPC2023-ProblemSet.pdf` | [namingwine](https://open.kattis.com/problems/namingwine) | [30571](https://solved.ac/problems/30571) | --- ## United Kingdom & Ireland Evening Programming Contest (2024) - **Contest Slug:** `ukiepc` - **Year:** 2024 - **Open.Kattis Contest:** [Open.Kattis](https://open.kattis.com/problem-sources/United%20Kingdom%20and%20Ireland%20Programming%20Contest%20%28UKIEPC%29%202024) - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4316) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :-------------------------- | :---------------------------- | :------------------------------------- | :-----------------------------------------------------------------: | :---------------------------------------: | | **A** | Amalgram | `ukiepc/2024/amalgram` | `ukiepc/2024/UKIEPC 2024 Problems.pdf` | [amalgram](https://open.kattis.com/problems/amalgram) | [32560](https://solved.ac/problems/32560) | | **B** | Budget Analysis | `ukiepc/2024/budget` | `ukiepc/2024/UKIEPC 2024 Problems.pdf` | [budget3](https://open.kattis.com/problems/budget3) | [32561](https://solved.ac/problems/32561) | | **C** | Cross Country | `ukiepc/2024/crosscountry` | `ukiepc/2024/UKIEPC 2024 Problems.pdf` | [crosscountry2](https://open.kattis.com/problems/crosscountry2) | [32562](https://solved.ac/problems/32562) | | **D** | Drone Control | `ukiepc/2024/drone` | `ukiepc/2024/UKIEPC 2024 Problems.pdf` | [drone](https://open.kattis.com/problems/drone) | [32563](https://solved.ac/problems/32563) | | **E** | Eradication Sort | `ukiepc/2024/eradication` | `ukiepc/2024/UKIEPC 2024 Problems.pdf` | [eradication](https://open.kattis.com/problems/eradication) | [32564](https://solved.ac/problems/32564) | | **F** | Finding Suspicious Proteins | `ukiepc/2024/findingproteins` | `ukiepc/2024/UKIEPC 2024 Problems.pdf` | [findingproteins](https://open.kattis.com/problems/findingproteins) | [32565](https://solved.ac/problems/32565) | | **G** | Word Search | `ukiepc/2024/gridsearch` | `ukiepc/2024/UKIEPC 2024 Problems.pdf` | [gridsearch](https://open.kattis.com/problems/gridsearch) | [32566](https://solved.ac/problems/32566) | | **H** | Hedge Topiary | `ukiepc/2024/hedge` | `ukiepc/2024/UKIEPC 2024 Problems.pdf` | [hedge](https://open.kattis.com/problems/hedge) | [32567](https://solved.ac/problems/32567) | | **I** | Inconsistent Patterns | `ukiepc/2024/inconsistent` | `ukiepc/2024/UKIEPC 2024 Problems.pdf` | [inconsistent](https://open.kattis.com/problems/inconsistent) | [32568](https://solved.ac/problems/32568) | | **J** | Jabber Network | `ukiepc/2024/jabbernetwork` | `ukiepc/2024/UKIEPC 2024 Problems.pdf` | [jabbernetwork](https://open.kattis.com/problems/jabbernetwork) | [32569](https://solved.ac/problems/32569) | | **K** | Knitting | `ukiepc/2024/knitting` | `ukiepc/2024/UKIEPC 2024 Problems.pdf` | [knitting](https://open.kattis.com/problems/knitting) | [32570](https://solved.ac/problems/32570) | | **L** | Leg Day | `ukiepc/2024/legday` | `ukiepc/2024/UKIEPC 2024 Problems.pdf` | [legday](https://open.kattis.com/problems/legday) | [32571](https://solved.ac/problems/32571) | --- ## United Kingdom & Ireland Evening Programming Contest (2025) - **Contest Slug:** `ukiepc` - **Year:** 2025 - **solved.ac Archive:** [solved.ac](https://solved.ac/problems/archive/contest/4655) ### Official Contest | Letter | Problem Name | Problem Directory | Statement PDF Location | Kattis | solved.ac | | :----: | :----------------- | :------------------------ | :------------------------------------- | :----: | :---------------------------------------: | | **A** | Arboreal Challenge | `ukiepc/2025/arboreal` | `ukiepc/2025/UKIEPC 2025 Problems.pdf` | - | [35239](https://solved.ac/problems/35239) | | **B** | Brickwork | `ukiepc/2025/bricks` | `ukiepc/2025/UKIEPC 2025 Problems.pdf` | - | [35240](https://solved.ac/problems/35240) | | **C** | Colourful Captcha | `ukiepc/2025/colour` | `ukiepc/2025/UKIEPC 2025 Problems.pdf` | - | [35241](https://solved.ac/problems/35241) | | **D** | Depot | `ukiepc/2025/depot` | `ukiepc/2025/UKIEPC 2025 Problems.pdf` | - | [35242](https://solved.ac/problems/35242) | | **E** | Enclosure | `ukiepc/2025/enclosure` | `ukiepc/2025/UKIEPC 2025 Problems.pdf` | - | [35243](https://solved.ac/problems/35243) | | **F** | Fell Walking | `ukiepc/2025/fellwalking` | `ukiepc/2025/UKIEPC 2025 Problems.pdf` | - | [35244](https://solved.ac/problems/35244) | | **G** | Get Good | `ukiepc/2025/getgood` | `ukiepc/2025/UKIEPC 2025 Problems.pdf` | - | [35245](https://solved.ac/problems/35245) | | **H** | Hybrid Search | `ukiepc/2025/hybrid` | `ukiepc/2025/UKIEPC 2025 Problems.pdf` | - | [35246](https://solved.ac/problems/35246) | | **I** | Itsy Bits | `ukiepc/2025/itsybits` | `ukiepc/2025/UKIEPC 2025 Problems.pdf` | - | [35247](https://solved.ac/problems/35247) | | **J** | Joust Sort | `ukiepc/2025/joust` | `ukiepc/2025/UKIEPC 2025 Problems.pdf` | - | [35248](https://solved.ac/problems/35248) | | **K** | Klaus | `ukiepc/2025/klaus` | `ukiepc/2025/UKIEPC 2025 Problems.pdf` | - | [35249](https://solved.ac/problems/35249) | | **L** | Last Orders | `ukiepc/2025/lastorders` | `ukiepc/2025/UKIEPC 2025 Problems.pdf` | - | [35250](https://solved.ac/problems/35250) | | **M** | Motorway Stops | `ukiepc/2025/motorway` | `ukiepc/2025/UKIEPC 2025 Problems.pdf` | - | [35251](https://solved.ac/problems/35251) | ---