# ICPC Contests & Open.Kattis Problem Mapping Report

This report catalogs every ICPC contest with verified problem statements and test data,
providing the official solved.ac archive, Open.Kattis source link, and problem-by-problem Kattis matches.

**Total Contests Cataloged:** 290
**Total Valid Problems Evaluated:** 3389  
**Total Matched on Open.Kattis:** 1922 (56.7%)

---

## Benelux Algorithm Programming Championship (2017)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1783](https://solved.ac/problems/archive/contest/1783)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%202017](https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%202017)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | Amsterdam Distance | [https://open.kattis.com/problems/amsterdamdistance](https://open.kattis.com/problems/amsterdamdistance) |
| `B` | Bearly Made It | [https://open.kattis.com/problems/bearlymadeit](https://open.kattis.com/problems/bearlymadeit) |
| `C` | Collatz Conjecture | [https://open.kattis.com/problems/collatzconjecture](https://open.kattis.com/problems/collatzconjecture) |
| `D` | Detour | [https://open.kattis.com/problems/detour](https://open.kattis.com/problems/detour) |
| `E` | Easter Eggs | [https://open.kattis.com/problems/eastereggs](https://open.kattis.com/problems/eastereggs) |
| `F` | Falling Apart | [https://open.kattis.com/problems/fallingapart](https://open.kattis.com/problems/fallingapart) |
| `G` | Going Dutch | [https://open.kattis.com/problems/goingdutch](https://open.kattis.com/problems/goingdutch) |
| `H` | Hoarse Horses | [https://open.kattis.com/problems/hoarsehorses](https://open.kattis.com/problems/hoarsehorses) |
| `I` | Irrational Division | [https://open.kattis.com/problems/irrationaldivision](https://open.kattis.com/problems/irrationaldivision) |
| `K` | King of the Waves | [https://open.kattis.com/problems/kingofthewaves](https://open.kattis.com/problems/kingofthewaves) |

---

## Benelux Algorithm Programming Championship (2018)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1937](https://solved.ac/problems/archive/contest/1937)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%202018](https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%202018)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `aprizenoonecanwin` | A Prize No One Can Win | [https://open.kattis.com/problems/aprizenoonecanwin](https://open.kattis.com/problems/aprizenoonecanwin) |
| `birthdayboy` | Birthday Boy | [https://open.kattis.com/problems/birthdayboy](https://open.kattis.com/problems/birthdayboy) |
| `cardboardcontainer` | Cardboard Container | [https://open.kattis.com/problems/cardboardcontainer](https://open.kattis.com/problems/cardboardcontainer) |
| `driverdisagreement` | Driver Disagreement | [https://open.kattis.com/problems/driverdisagreement](https://open.kattis.com/problems/driverdisagreement) |
| `entirelyunsortedsequences` | Entirely Unsorted Sequences | [https://open.kattis.com/problems/entirelyunsortedsequences](https://open.kattis.com/problems/entirelyunsortedsequences) |
| `financialplanning` | Financial Planning | [https://open.kattis.com/problems/financialplanning](https://open.kattis.com/problems/financialplanning) |
| `gamenight` | Game Night | [https://open.kattis.com/problems/gamenight](https://open.kattis.com/problems/gamenight) |
| `hamster` | Harry the Hamster | [https://open.kattis.com/problems/hamster](https://open.kattis.com/problems/hamster) |
| `incaseofinvasion` | In Case of an Invasion, Please ... | [https://open.kattis.com/problems/incaseofinvasion](https://open.kattis.com/problems/incaseofinvasion) |
| `janitortroubles` | Janitor Troubles | [https://open.kattis.com/problems/janitortroubles](https://open.kattis.com/problems/janitortroubles) |
| `kingpinescape` | Kingpin Escape | [https://open.kattis.com/problems/kingpinescape](https://open.kattis.com/problems/kingpinescape) |

---

## Benelux Algorithm Programming Championship (2019)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2094](https://solved.ac/problems/archive/contest/2094)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%202019](https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%202019)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | Appeal to the Audience | [https://open.kattis.com/problems/appealtotheaudience](https://open.kattis.com/problems/appealtotheaudience) |
| `B` | Breaking Branches | [https://open.kattis.com/problems/breakingbranches](https://open.kattis.com/problems/breakingbranches) |
| `C` | Conveyor Belts | [https://open.kattis.com/problems/conveyorbelts2](https://open.kattis.com/problems/conveyorbelts2) |
| `D` | Deck Randomisation | [https://open.kattis.com/problems/deckrandomisation](https://open.kattis.com/problems/deckrandomisation) |
| `E` | Efficient Exchange | [https://open.kattis.com/problems/efficientexchange](https://open.kattis.com/problems/efficientexchange) |
| `F` | Find my Family | [https://open.kattis.com/problems/findmyfamily](https://open.kattis.com/problems/findmyfamily) |
| `G` | Gluttonous Goop | [https://open.kattis.com/problems/gluttonousgoop](https://open.kattis.com/problems/gluttonousgoop) |
| `H` | Historic Exhibition | [https://open.kattis.com/problems/historicexhibition](https://open.kattis.com/problems/historicexhibition) |
| `I` | Inquiry II | [https://open.kattis.com/problems/inquiryii](https://open.kattis.com/problems/inquiryii) |
| `J` | Jazz it Up! | [https://open.kattis.com/problems/jazzitup](https://open.kattis.com/problems/jazzitup) |
| `K` | Keep Him Inside | [https://open.kattis.com/problems/keephiminside](https://open.kattis.com/problems/keephiminside) |
| `L` | Lucky Draw | [https://open.kattis.com/problems/luckydraw](https://open.kattis.com/problems/luckydraw) |

---

## Benelux Algorithm Programming Championship (2020)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2360](https://solved.ac/problems/archive/contest/2360)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%202020](https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%202020)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | Aquarium Arrangement | [https://open.kattis.com/problems/aquarium](https://open.kattis.com/problems/aquarium) |
| `B` | Balanced Breakdown | [https://open.kattis.com/problems/bidirectionalcode](https://open.kattis.com/problems/bidirectionalcode) |
| `C` | Corrupted Contest | [https://open.kattis.com/problems/corruptjudge](https://open.kattis.com/problems/corruptjudge) |
| `D` | Destabilized Drone | **UNMATCHED** |
| `E` | Efficiently Elevated | [https://open.kattis.com/problems/elevatorpitch](https://open.kattis.com/problems/elevatorpitch) |
| `F` | Family Fares | [https://open.kattis.com/problems/familyfares](https://open.kattis.com/problems/familyfares) |
| `G` | Generator Grid | [https://open.kattis.com/problems/generators](https://open.kattis.com/problems/generators) |
| `H` | Hungry Henk | [https://open.kattis.com/problems/haughtycuisine](https://open.kattis.com/problems/haughtycuisine) |
| `I` | Incomplete Implementation | [https://open.kattis.com/problems/incompletesort](https://open.kattis.com/problems/incompletesort) |
| `J` | Jigsaw | [https://open.kattis.com/problems/jigsaw](https://open.kattis.com/problems/jigsaw) |
| `K` | Xortest Path | [https://open.kattis.com/problems/kleptocrat](https://open.kattis.com/problems/kleptocrat) |

---

## Benelux Algorithm Programming Championship (2021)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2826](https://solved.ac/problems/archive/contest/2826)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%202021](https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%202021)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `armcoordination` | Arm Coordination | [https://open.kattis.com/problems/armcoordination](https://open.kattis.com/problems/armcoordination) |
| `bnpc` | BnPC | [https://open.kattis.com/problems/bnpc](https://open.kattis.com/problems/bnpc) |
| `cangaroo` | Cangaroo | [https://open.kattis.com/problems/cangaroo](https://open.kattis.com/problems/cangaroo) |
| `decelerating` | Decelerating Jump | [https://open.kattis.com/problems/deceleratingjump](https://open.kattis.com/problems/deceleratingjump) |
| `evolutionaryexcerpt` | Evolutionary Excerpt | [https://open.kattis.com/problems/evolutionaryexcerpt](https://open.kattis.com/problems/evolutionaryexcerpt) |
| `fairplay` | Fair Play | [https://open.kattis.com/problems/fairplay](https://open.kattis.com/problems/fairplay) |
| `gyratingglyphs` | Gyrating Glyphs | [https://open.kattis.com/problems/gyratingglyphs](https://open.kattis.com/problems/gyratingglyphs) |
| `hamiltonpath` | Hamiltooonian Hike | [https://open.kattis.com/problems/hamiltooonianhike](https://open.kattis.com/problems/hamiltooonianhike) |
| `implementationirregularities` | Implementation Irregularities | [https://open.kattis.com/problems/implementationirregularities](https://open.kattis.com/problems/implementationirregularities) |
| `jailorjoyride` | Jail or Joyride | [https://open.kattis.com/problems/jailorjoyride](https://open.kattis.com/problems/jailorjoyride) |
| `kinkingcables` | Kinking Cables | [https://open.kattis.com/problems/kinkingcables](https://open.kattis.com/problems/kinkingcables) |
| `lopsidedlineup` | Lopsided Lineup | [https://open.kattis.com/problems/lopsidedlineup](https://open.kattis.com/problems/lopsidedlineup) |

---

## Benelux Algorithm Programming Championship (2022)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/3222](https://solved.ac/problems/archive/contest/3222)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%202022](https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%202022)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `adjustedaverage` | Adjusted Average | [https://open.kattis.com/problems/adjustedaverage](https://open.kattis.com/problems/adjustedaverage) |
| `bellevue` | Bellevue | [https://open.kattis.com/problems/bellevue](https://open.kattis.com/problems/bellevue) |
| `crashingcompetitioncomputer` | Crashing Competition Computer | [https://open.kattis.com/problems/crashingcompetitioncomputer](https://open.kattis.com/problems/crashingcompetitioncomputer) |
| `dividingdna` | Dividing DNA | [https://open.kattis.com/problems/dividingdna](https://open.kattis.com/problems/dividingdna) |
| `equalisingaudio` | Equalising Audio | [https://open.kattis.com/problems/equalisingaudio](https://open.kattis.com/problems/equalisingaudio) |
| `failingflagship` | Failing Flagship | [https://open.kattis.com/problems/failingflagship](https://open.kattis.com/problems/failingflagship) |
| `grindinggravel` | Grinding Gravel | [https://open.kattis.com/problems/grindinggravel](https://open.kattis.com/problems/grindinggravel) |
| `housenumbering` | House Numbering | [https://open.kattis.com/problems/housenumbering](https://open.kattis.com/problems/housenumbering) |
| `imperfectimperialunits` | Imperfect Imperial Units | [https://open.kattis.com/problems/imperfectimperialunits](https://open.kattis.com/problems/imperfectimperialunits) |
| `jaggedskyline` | Jagged Skyline | [https://open.kattis.com/problems/jaggedskyline](https://open.kattis.com/problems/jaggedskyline) |
| `kioskconstruction` | Kiosk Construction | [https://open.kattis.com/problems/kioskconstruction](https://open.kattis.com/problems/kioskconstruction) |
| `lowestlatency` | Lowest Latency | **UNMATCHED** |

---

## Benelux Algorithm Programming Championship (2023)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4010](https://solved.ac/problems/archive/contest/4010)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%202023](https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%202023)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `aptupgrade` | APT Upgrade | [https://open.kattis.com/problems/aptupgrade](https://open.kattis.com/problems/aptupgrade) |
| `battlebots` | Battle Bots | [https://open.kattis.com/problems/battlebots](https://open.kattis.com/problems/battlebots) |
| `compressingcommands` | Compressing Commands | [https://open.kattis.com/problems/compressingcommands](https://open.kattis.com/problems/compressingcommands) |
| `democraticnaming` | Democratic Naming | [https://open.kattis.com/problems/democraticnaming](https://open.kattis.com/problems/democraticnaming) |
| `examstudyplanning` | Exam Study Planning | [https://open.kattis.com/problems/examstudyplanning](https://open.kattis.com/problems/examstudyplanning) |
| `funicularfrenzy` | Funicular Frenzy | [https://open.kattis.com/problems/funicularfrenzy](https://open.kattis.com/problems/funicularfrenzy) |
| `geometrygame` | Geometry Game | [https://open.kattis.com/problems/geometrygame](https://open.kattis.com/problems/geometrygame) |
| `hiddenart` | Hidden Art | [https://open.kattis.com/problems/hiddenart](https://open.kattis.com/problems/hiddenart) |
| `internationalirregularities` | International Irregularities | [https://open.kattis.com/problems/internationalirregularities](https://open.kattis.com/problems/internationalirregularities) |
| `junglejob` | Jungle Job | [https://open.kattis.com/problems/junglejob](https://open.kattis.com/problems/junglejob) |
| `kingofthehill` | King of the Hill | [https://open.kattis.com/problems/kingofthehill](https://open.kattis.com/problems/kingofthehill) |
| `lockingdoors` | Locking Doors | [https://open.kattis.com/problems/lockingdoors](https://open.kattis.com/problems/lockingdoors) |

---

## Benelux Algorithm Programming Championship Preliminaries (BAPC Prelims) (2017)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1782](https://solved.ac/problems/archive/contest/1782)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%20preliminaries%202017](https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%20preliminaries%202017)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | Abandoned Animals | [https://open.kattis.com/problems/abandonedanimal](https://open.kattis.com/problems/abandonedanimal) |
| `B` | Booming Business | [https://open.kattis.com/problems/boomingbusiness](https://open.kattis.com/problems/boomingbusiness) |
| `C` | Crowd Control | [https://open.kattis.com/problems/crowdcontrol](https://open.kattis.com/problems/crowdcontrol) |
| `D` | Disastrous Doubling | [https://open.kattis.com/problems/disastrousdoubling](https://open.kattis.com/problems/disastrousdoubling) |
| `E` | Envious Exponents | [https://open.kattis.com/problems/enviousexponents](https://open.kattis.com/problems/enviousexponents) |
| `F` | Fidget Spinner | [https://open.kattis.com/problems/fidgetspinner](https://open.kattis.com/problems/fidgetspinner) |
| `G` | Ghostbusters | [https://open.kattis.com/problems/ghostbusters2](https://open.kattis.com/problems/ghostbusters2) |
| `H` | Horror Film Night | [https://open.kattis.com/problems/horrorfilmnight](https://open.kattis.com/problems/horrorfilmnight) |
| `I` | Intelligence Infection | [https://open.kattis.com/problems/intelligenceinfection](https://open.kattis.com/problems/intelligenceinfection) |
| `J` | Journal Editing | [https://open.kattis.com/problems/journalediting](https://open.kattis.com/problems/journalediting) |
| `K` | Knight Marathon | [https://open.kattis.com/problems/knightsmarathon](https://open.kattis.com/problems/knightsmarathon) |
| `L` | Leapfrog | [https://open.kattis.com/problems/leapfrog](https://open.kattis.com/problems/leapfrog) |

---

## Benelux Algorithm Programming Championship Preliminaries (BAPC Prelims) (2018)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1936](https://solved.ac/problems/archive/contest/1936)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%20preliminaries%202018](https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%20preliminaries%202018)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | Appaling Architecture | [https://open.kattis.com/problems/appallingarchitecture](https://open.kattis.com/problems/appallingarchitecture) |
| `B` | Bee Problem | [https://open.kattis.com/problems/beeproblem](https://open.kattis.com/problems/beeproblem) |
| `C` | Criss-Cross Cables | [https://open.kattis.com/problems/crisscrosscables](https://open.kattis.com/problems/crisscrosscables) |
| `D` | Daily Division | [https://open.kattis.com/problems/dailydivision](https://open.kattis.com/problems/dailydivision) |
| `E` | Eating Everything Efficiently | [https://open.kattis.com/problems/eatingeverything](https://open.kattis.com/problems/eatingeverything) |
| `F` | Floating Points | [https://open.kattis.com/problems/floatingpoints](https://open.kattis.com/problems/floatingpoints) |
| `G` | Green Light | [https://open.kattis.com/problems/greenlight](https://open.kattis.com/problems/greenlight) |
| `H` | H to O | [https://open.kattis.com/problems/htoo](https://open.kattis.com/problems/htoo) |
| `I` | Isomorphic Inversion | [https://open.kattis.com/problems/isomorphicinversion](https://open.kattis.com/problems/isomorphicinversion) |
| `J` | Jurassic Jigsaw | [https://open.kattis.com/problems/jurassicjigsaw](https://open.kattis.com/problems/jurassicjigsaw) |
| `K` | KALLAX Construction | [https://open.kattis.com/problems/kallaxconstruction](https://open.kattis.com/problems/kallaxconstruction) |

---

## Benelux Algorithm Programming Championship Preliminaries (BAPC Prelims) (2019)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2066](https://solved.ac/problems/archive/contest/2066)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%20preliminaries%202019](https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%20preliminaries%202019)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | Architecture | [https://open.kattis.com/problems/architecture](https://open.kattis.com/problems/architecture) |
| `B` | Bracket Sequence | [https://open.kattis.com/problems/bracketsequence](https://open.kattis.com/problems/bracketsequence) |
| `C` | Canyon Crossing | [https://open.kattis.com/problems/canyoncrossing](https://open.kattis.com/problems/canyoncrossing) |
| `D` | Deceptive Dice | [https://open.kattis.com/problems/deceptivedice](https://open.kattis.com/problems/deceptivedice) |
| `E` | Exits in Excess | [https://open.kattis.com/problems/exitsinexcess](https://open.kattis.com/problems/exitsinexcess) |
| `F` | Floor Plan | [https://open.kattis.com/problems/floorplan](https://open.kattis.com/problems/floorplan) |
| `G` | Greetings! | [https://open.kattis.com/problems/greetings2](https://open.kattis.com/problems/greetings2) |
| `H` | Hexagonal Rooks | [https://open.kattis.com/problems/hexagonalrooks](https://open.kattis.com/problems/hexagonalrooks) |
| `I` | Inquiry I | [https://open.kattis.com/problems/inquiryi](https://open.kattis.com/problems/inquiryi) |
| `J` | Jumbled Journey | [https://open.kattis.com/problems/jumbledjourney](https://open.kattis.com/problems/jumbledjourney) |
| `K` | Knapsack Packing | [https://open.kattis.com/problems/knapsackpacking](https://open.kattis.com/problems/knapsackpacking) |
| `L` | Lifeguards | [https://open.kattis.com/problems/lifeguards](https://open.kattis.com/problems/lifeguards) |

---

## Benelux Algorithm Programming Championship Preliminaries (BAPC Prelims) (2022)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/3221](https://solved.ac/problems/archive/contest/3221)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%20preliminaries%202022](https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%20preliminaries%202022)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `abbreviatedaliases` | Abbreviated Aliases | [https://open.kattis.com/problems/abbreviatedaliases](https://open.kattis.com/problems/abbreviatedaliases) |
| `bubblebubblesort` | Bubble-bubble Sort | [https://open.kattis.com/problems/bubblebubblesort](https://open.kattis.com/problems/bubblebubblesort) |
| `cookbookcomposition` | Cookbook Composition | [https://open.kattis.com/problems/cookbookcomposition](https://open.kattis.com/problems/cookbookcomposition) |
| `dimensionaldebugging` | Dimensional Debugging | [https://open.kattis.com/problems/dimensionaldebugging](https://open.kattis.com/problems/dimensionaldebugging) |
| `extendedbraille` | Extended Braille | [https://open.kattis.com/problems/extendedbraille](https://open.kattis.com/problems/extendedbraille) |
| `fastestestfunction` | Fastestest Function | [https://open.kattis.com/problems/fastestestfunction](https://open.kattis.com/problems/fastestestfunction) |
| `guessingprimes` | Guessing Primes | [https://open.kattis.com/problems/guessingprimes](https://open.kattis.com/problems/guessingprimes) |
| `heavyhauling` | Heavy Hauling | [https://open.kattis.com/problems/heavyhauling](https://open.kattis.com/problems/heavyhauling) |
| `inkedinscriptions` | Inked Inscriptions | [https://open.kattis.com/problems/inkedinscriptions](https://open.kattis.com/problems/inkedinscriptions) |
| `jabbingjets` | Jabbing Jets | [https://open.kattis.com/problems/jabbingjets](https://open.kattis.com/problems/jabbingjets) |
| `knittingpatterns` | Knitting Patterns | [https://open.kattis.com/problems/knittingpatterns](https://open.kattis.com/problems/knittingpatterns) |
| `lotsofliquid` | Lots of Liquid | [https://open.kattis.com/problems/lotsofliquid](https://open.kattis.com/problems/lotsofliquid) |

---

## Benelux Algorithm Programming Championship Preliminaries (BAPC Prelims) (2023)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/3987](https://solved.ac/problems/archive/contest/3987)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%20preliminaries%202023](https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%20preliminaries%202023)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `antitetris` | Anti-Tetris | [https://open.kattis.com/problems/antitetris](https://open.kattis.com/problems/antitetris) |
| `betterdice` | Better Dice | [https://open.kattis.com/problems/betterdice](https://open.kattis.com/problems/betterdice) |
| `cheapflying` | Cheap Flying | [https://open.kattis.com/problems/cheapflying](https://open.kattis.com/problems/cheapflying) |
| `determiningduos` | Determining Duos | [https://open.kattis.com/problems/determiningduos](https://open.kattis.com/problems/determiningduos) |
| `exceedinglimits` | Exceeding Limits | [https://open.kattis.com/problems/exceedinglimits](https://open.kattis.com/problems/exceedinglimits) |
| `findingforks` | Finding Forks | [https://open.kattis.com/problems/findingforks](https://open.kattis.com/problems/findingforks) |
| `gatheringsearchresults` | Gathering Search Results | [https://open.kattis.com/problems/gatheringsearchresults](https://open.kattis.com/problems/gatheringsearchresults) |
| `hackyordering` | Hacky Ordering | [https://open.kattis.com/problems/hackyordering](https://open.kattis.com/problems/hackyordering) |
| `idleterminal` | Idle Terminal | [https://open.kattis.com/problems/idleterminal](https://open.kattis.com/problems/idleterminal) |
| `justajoystick` | Just a Joystick | [https://open.kattis.com/problems/justajoystick](https://open.kattis.com/problems/justajoystick) |
| `kingskeep` | King | [https://open.kattis.com/problems/kingskeep](https://open.kattis.com/problems/kingskeep) |
| `losingleaves` | Losing Leaves | [https://open.kattis.com/problems/losingleaves](https://open.kattis.com/problems/losingleaves) |
| `monorail` | Monorail | [https://open.kattis.com/problems/monorail](https://open.kattis.com/problems/monorail) |

---

## Benelux Algorithm Programming Championship Preliminaries (BAPC Prelims) (2024)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4313](https://solved.ac/problems/archive/contest/4313)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%20preliminaries%202024](https://open.kattis.com/problem-sources/Benelux%20Algorithm%20Programming%20Contest%20%28BAPC%29%20preliminaries%202024)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `awkwardauction` | Awkward Auction | [https://open.kattis.com/problems/awkwardauction](https://open.kattis.com/problems/awkwardauction) |
| `battleofnieuwpoort` | Battle of Nieuwpoort | [https://open.kattis.com/problems/battleofnieuwpoort](https://open.kattis.com/problems/battleofnieuwpoort) |
| `chaoticcables` | Chaotic Cables | [https://open.kattis.com/problems/chaoticcables](https://open.kattis.com/problems/chaoticcables) |
| `diallingdigits` | Dialling Digits | [https://open.kattis.com/problems/diallingdigits](https://open.kattis.com/problems/diallingdigits) |
| `expectederror` | Expected Error | [https://open.kattis.com/problems/expectederror](https://open.kattis.com/problems/expectederror) |
| `fractalarea` | Fractal Area | **UNMATCHED** |
| `giganotosaurusgame` | Giganotosaurus Game | [https://open.kattis.com/problems/giganotosaurusgame](https://open.kattis.com/problems/giganotosaurusgame) |
| `humanpyramid` | Human Pyramid | [https://open.kattis.com/problems/humanpyramid](https://open.kattis.com/problems/humanpyramid) |
| `investmentinvestigation` | Investment Investigation | [https://open.kattis.com/problems/investmentinvestigation](https://open.kattis.com/problems/investmentinvestigation) |
| `joppiesausjailbreak` | Joppiesaus Jailbreak | [https://open.kattis.com/problems/joppiesausjailbreak](https://open.kattis.com/problems/joppiesausjailbreak) |
| `kitchensofkonigsberg` | Kitchens of Königsberg | **UNMATCHED** |
| `lawfullimits` | Lawful Limits | [https://open.kattis.com/problems/lawfullimits](https://open.kattis.com/problems/lawfullimits) |

---

## Central Europe Regional Contest (2007)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/36](https://solved.ac/problems/archive/contest/36)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `billboard` | Strange Billboard | **UNMATCHED** |
| `cell` | Phone Cell | **UNMATCHED** |
| `hexagon` | Hexagonal Parcels | **UNMATCHED** |
| `keys` | Key Task | **UNMATCHED** |
| `logic` | Gates of Logic | **UNMATCHED** |
| `numbers` | Weird Numbers | **UNMATCHED** |
| `polygon` | Rectangular Polygons | **UNMATCHED** |
| `roshambo` | Reaux! Sham! Beaux! | **UNMATCHED** |
| `sort` | Robotic Sort | **UNMATCHED** |
| `water` | Tough Water Level | **UNMATCHED** |

---

## Central Europe Regional Contest (2012)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/33](https://solved.ac/problems/archive/contest/33)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Central%20Europe%20Regional%20Contest%20%28CERC%29%202012](https://open.kattis.com/problem-sources/Central%20Europe%20Regional%20Contest%20%28CERC%29%202012)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `a` | Kingdoms | [https://open.kattis.com/problems/kingdoms](https://open.kattis.com/problems/kingdoms) |
| `b` | Who wants to live forever? | [https://open.kattis.com/problems/whowantstoliveforever](https://open.kattis.com/problems/whowantstoliveforever) |
| `c` | Chemist’s vows | [https://open.kattis.com/problems/chemistsvows](https://open.kattis.com/problems/chemistsvows) |
| `d` | Non-boring sequences | [https://open.kattis.com/problems/nonboringsequences](https://open.kattis.com/problems/nonboringsequences) |
| `e` | Word equations | [https://open.kattis.com/problems/wordequations](https://open.kattis.com/problems/wordequations) |
| `f` | Farm and factory | **UNMATCHED** |
| `g` | Jewel heist | [https://open.kattis.com/problems/jewelheist](https://open.kattis.com/problems/jewelheist) |
| `h` | Darts | [https://open.kattis.com/problems/dartscores](https://open.kattis.com/problems/dartscores) |
| `i` | The Dragon and the knights | [https://open.kattis.com/problems/thedragonandtheknights](https://open.kattis.com/problems/thedragonandtheknights) |
| `j` | Conservation | [https://open.kattis.com/problems/conservation](https://open.kattis.com/problems/conservation) |
| `k` | Graphic Madness | [https://open.kattis.com/problems/graphicmadness](https://open.kattis.com/problems/graphicmadness) |

---

## Central Europe Regional Contest (2013)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1176](https://solved.ac/problems/archive/contest/1176)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Central%20Europe%20Regional%20Contest%20%28CERC%29%202013](https://open.kattis.com/problem-sources/Central%20Europe%20Regional%20Contest%20%28CERC%29%202013)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `a` | Rubik’s Rectangle | [https://open.kattis.com/problems/rubikrectangle](https://open.kattis.com/problems/rubikrectangle) |
| `b` | What does the fox say? | [https://open.kattis.com/problems/whatdoesthefoxsay](https://open.kattis.com/problems/whatdoesthefoxsay) |
| `c` | Magical GCD | [https://open.kattis.com/problems/magicalgcd](https://open.kattis.com/problems/magicalgcd) |
| `d` | Subway | [https://open.kattis.com/problems/subway3](https://open.kattis.com/problems/subway3) |
| `e` | Escape | [https://open.kattis.com/problems/escape](https://open.kattis.com/problems/escape) |
| `f` | Draughts | [https://open.kattis.com/problems/draughts](https://open.kattis.com/problems/draughts) |
| `g` | History course | **UNMATCHED** |
| `h` | Chain & Co. | [https://open.kattis.com/problems/chainco](https://open.kattis.com/problems/chainco) |
| `i` | Crane | [https://open.kattis.com/problems/crane2](https://open.kattis.com/problems/crane2) |
| `j` | Captain Obvious and the Rabbit-Man | [https://open.kattis.com/problems/captainobvious](https://open.kattis.com/problems/captainobvious) |
| `k` | Digraphs | [https://open.kattis.com/problems/digraphs](https://open.kattis.com/problems/digraphs) |
| `l` | Bus | [https://open.kattis.com/problems/bus](https://open.kattis.com/problems/bus) |

---

## Central Europe Regional Contest (2014)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1310](https://solved.ac/problems/archive/contest/1310)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Central%20Europe%20Regional%20Contest%20%28CERC%29%202014](https://open.kattis.com/problem-sources/Central%20Europe%20Regional%20Contest%20%28CERC%29%202014)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `a` | Parades | [https://open.kattis.com/problems/parades](https://open.kattis.com/problems/parades) |
| `b` | Mountainous landscape | [https://open.kattis.com/problems/mountainouslandscape](https://open.kattis.com/problems/mountainouslandscape) |
| `c` | Sums | [https://open.kattis.com/problems/consecutivesums](https://open.kattis.com/problems/consecutivesums) |
| `d` | Wheels | [https://open.kattis.com/problems/wheels](https://open.kattis.com/problems/wheels) |
| `e` | Can’t stop playing | [https://open.kattis.com/problems/cantstopplaying](https://open.kattis.com/problems/cantstopplaying) |
| `f` | Vocabulary | [https://open.kattis.com/problems/vocabulary](https://open.kattis.com/problems/vocabulary) |
| `g` | Virus synthesis | [https://open.kattis.com/problems/virussynthesis](https://open.kattis.com/problems/virussynthesis) |
| `h` | Good morning! | [https://open.kattis.com/problems/goodmorning](https://open.kattis.com/problems/goodmorning) |
| `i` | Bricks | [https://open.kattis.com/problems/brickpartition](https://open.kattis.com/problems/brickpartition) |
| `j` | Pork barrel | [https://open.kattis.com/problems/porkbarrel](https://open.kattis.com/problems/porkbarrel) |
| `k` | The Imp | [https://open.kattis.com/problems/theimp](https://open.kattis.com/problems/theimp) |
| `l` | Outer space invaders | [https://open.kattis.com/problems/spaceinvaders](https://open.kattis.com/problems/spaceinvaders) |

---

## Central Europe Regional Contest (2015)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1426](https://solved.ac/problems/archive/contest/1426)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Central%20Europe%20Regional%20Contest%20%28CERC%29%202015](https://open.kattis.com/problem-sources/Central%20Europe%20Regional%20Contest%20%28CERC%29%202015)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `cowconfinement` | Cow Confinement | **UNMATCHED** |

---

## Central Europe Regional Contest (2018)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1978](https://solved.ac/problems/archive/contest/1978)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `abcd` | The ABCD Murderer | **UNMATCHED** |
| `bridge` | The Bridge on the River Kawaii | **UNMATCHED** |
| `clockwork` | Clockwork ––ange | **UNMATCHED** |
| `dog` | Reservoir Dog | **UNMATCHED** |
| `gump` | Trees Gump | **UNMATCHED** |
| `hull` | Incredible Hull | **UNMATCHED** |
| `island` | Shooter Island | **UNMATCHED** |
| `king` | The Lord of the Kings | **UNMATCHED** |
| `lamps` | The Silence of the Lamps | **UNMATCHED** |
| `matrice` | Matrice | **UNMATCHED** |
| `report` | Mirrority Report | **UNMATCHED** |
| `stones` | Game of Stones | **UNMATCHED** |

---

## Central Europe Regional Contest (2019)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2133](https://solved.ac/problems/archive/contest/2133)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `abb` | ABB | **UNMATCHED** |
| `begeeks` | Be Geeks! | **UNMATCHED** |
| `bob` | Bob in Wonderland | **UNMATCHED** |
| `crimson` | Crimson Sexy Jalapeños | **UNMATCHED** |
| `deep` | Deep800080 | **UNMATCHED** |
| `garden` | Zeldain Garden | **UNMATCHED** |
| `hindenburg` | Light Emitting Hindenburg | **UNMATCHED** |
| `kequalss` | K==S | **UNMATCHED** |
| `ponk` | Ponk Warshall | **UNMATCHED** |
| `saba` | Saba1000kg | **UNMATCHED** |
| `screamers` | Screamers in the Storm | **UNMATCHED** |
| `thebugs` | The Bugs | **UNMATCHED** |

---

## Central Europe Regional Contest (2020)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2795](https://solved.ac/problems/archive/contest/2795)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `art` | Art Transaction | **UNMATCHED** |
| `bank` | Bank Robbery | **UNMATCHED** |
| `collectors` | Pizzo Collectors | **UNMATCHED** |
| `excavation` | Excavation | **UNMATCHED** |
| `growing` | Tobacco Growing | **UNMATCHED** |
| `mission` | Rescue Mission | **UNMATCHED** |
| `offices` | Offices | **UNMATCHED** |
| `pickpockets` | Pickpockets | **UNMATCHED** |
| `roof` | Roof Escape | **UNMATCHED** |
| `screamers` | Screamers | **UNMATCHED** |

---

## Central Europe Regional Contest (2021)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/3108](https://solved.ac/problems/archive/contest/3108)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A-airline` | Airline | **UNMATCHED** |
| `B-dark-side` | Dark Side | **UNMATCHED** |
| `C-cactuscutting` | Cactuscutting | **UNMATCHED** |
| `D-djdarko` | Djdarko | **UNMATCHED** |
| `E-fishing` | Fishing | **UNMATCHED** |
| `F-letters` | Letters | **UNMATCHED** |
| `G-unique-lines` | Unique Lines | **UNMATCHED** |
| `H-radar` | Radar | **UNMATCHED** |
| `I-regional` | Regional | **UNMATCHED** |
| `J-repetitions` | Repetitions | **UNMATCHED** |
| `K-vlaka` | Vlaka | **UNMATCHED** |
| `L-systematic_salesman` | Systematic Salesman | **UNMATCHED** |

---

## Central Europe Regional Contest (2022)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/3238](https://solved.ac/problems/archive/contest/3238)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A-bandits` | Bandits | **UNMATCHED** |
| `B-locks` | Locks | **UNMATCHED** |
| `C-constellations` | Constellations | **UNMATCHED** |
| `D-deforestation` | Deforestation | **UNMATCHED** |
| `E-normalization` | Normalization | **UNMATCHED** |
| `F-differences` | Differences | **UNMATCHED** |
| `G-drawers` | Drawers | **UNMATCHED** |
| `H-insertions` | Insertions | **UNMATCHED** |
| `I-money_laundering` | Money Laundering | **UNMATCHED** |
| `J-mortgage` | Mortgage | **UNMATCHED** |
| `K-pills` | Pills | **UNMATCHED** |
| `L-game` | Game | **UNMATCHED** |

---

## Central Europe Regional Contest (2023)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4073](https://solved.ac/problems/archive/contest/4073)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `attendance` | Attendance | **UNMATCHED** |
| `ball-passing` | Ball Passing | **UNMATCHED** |
| `cakes` | Cakes | **UNMATCHED** |
| `human-resources` | Human Resources | **UNMATCHED** |
| `interactive-reconstruction` | Interactive Reconstruction | **UNMATCHED** |
| `jumbled-stacks` | Jumbled Stacks | **UNMATCHED** |
| `keys` | Keys | **UNMATCHED** |
| `labelled-paths` | Labelled Paths | **UNMATCHED** |
| `laundry` | Laundry | **UNMATCHED** |
| `moon` | Moon | **UNMATCHED** |
| `phylogenetics` | Phylogenetics | **UNMATCHED** |
| `schedules` | Schedules | **UNMATCHED** |

---

## Duke Qualification Contest (2025)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | # $% | **UNMATCHED** |
| `B` | Seven Kingdoms | **UNMATCHED** |
| `C` | D • Recursively Palindromic Partitions | **UNMATCHED** |
| `D` | Fuel Stops | **UNMATCHED** |
| `E` | Cutting Brownies | **UNMATCHED** |
| `F` | Painter | **UNMATCHED** |
| `I` | Sum and Product | **UNMATCHED** |
| `J` | Problem A: | **UNMATCHED** |

---

## East Central North America Regional Contest (2000)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/886](https://solved.ac/problems/archive/contest/886)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | Picnic Planning | **UNMATCHED** |
| `B` | Poly-polygonal Numbers | **UNMATCHED** |
| `C` | Rational Approximation | **UNMATCHED** |
| `D` | Stacking Cubes | **UNMATCHED** |
| `E` | Checker's Check | **UNMATCHED** |
| `F` | To Bet or Not To Bet | **UNMATCHED** |
| `G` | BSP Trees | **UNMATCHED** |

---

## East Central North America Regional Contest (2001)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/885](https://solved.ac/problems/archive/contest/885)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | A | **UNMATCHED** |
| `B` | B | **UNMATCHED** |
| `C` | C | **UNMATCHED** |
| `D` | Trees Made to Order | **UNMATCHED** |
| `E` | E | **UNMATCHED** |
| `F` | F | **UNMATCHED** |
| `G` | G | **UNMATCHED** |
| `H` | Square I e | **UNMATCHED** |

---

## East Central North America Regional Contest (2002)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/124](https://solved.ac/problems/archive/contest/124)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | A | **UNMATCHED** |
| `B` | B | **UNMATCHED** |
| `C` | C | **UNMATCHED** |
| `D` | D | **UNMATCHED** |
| `E` | E | **UNMATCHED** |
| `F` | F | **UNMATCHED** |
| `G` | G | **UNMATCHED** |
| `H` | H | **UNMATCHED** |

---

## East Central North America Regional Contest (2003)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/123](https://solved.ac/problems/archive/contest/123)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | A | **UNMATCHED** |
| `B` | B | **UNMATCHED** |
| `C` | C | **UNMATCHED** |
| `D` | D | **UNMATCHED** |
| `E` | E | **UNMATCHED** |
| `F` | F | **UNMATCHED** |
| `G` | G | **UNMATCHED** |
| `H` | H | **UNMATCHED** |

---

## East Central North America Regional Contest (2004)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/122](https://solved.ac/problems/archive/contest/122)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | A | **UNMATCHED** |
| `B` | B | **UNMATCHED** |
| `C` | C | **UNMATCHED** |
| `D` | D | **UNMATCHED** |
| `E` | E | **UNMATCHED** |
| `F` | F | **UNMATCHED** |
| `G` | G | **UNMATCHED** |
| `H` | H | **UNMATCHED** |

---

## East Central North America Regional Contest (2005)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/121](https://solved.ac/problems/archive/contest/121)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | A | **UNMATCHED** |
| `B` | B | **UNMATCHED** |
| `C` | C | **UNMATCHED** |
| `D` | Queens, Knights and Pawns | **UNMATCHED** |
| `E` | E | **UNMATCHED** |
| `F` | F | **UNMATCHED** |
| `G` | G | **UNMATCHED** |
| `H` | H | **UNMATCHED** |

---

## East Central North America Regional Contest (2006)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/120](https://solved.ac/problems/archive/contest/120)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | A | **UNMATCHED** |
| `B` | B | **UNMATCHED** |
| `C` | C | **UNMATCHED** |
| `D` | D | **UNMATCHED** |
| `E` | E | **UNMATCHED** |
| `F` | F | **UNMATCHED** |
| `G` | G | **UNMATCHED** |
| `H` | H | **UNMATCHED** |

---

## East Central North America Regional Contest (2007)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/119](https://solved.ac/problems/archive/contest/119)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | CIVIC DILL MIX | **UNMATCHED** |
| `B` | A Foldy but a Goody | **UNMATCHED** |
| `C` | C | **UNMATCHED** |
| `D` | Lemmings, Lemmings Everywhere. But Not For Long. | **UNMATCHED** |
| `E` | Once Around the Lock | **UNMATCHED** |
| `F` | F | **UNMATCHED** |
| `G` | G | **UNMATCHED** |
| `H` | Target Practice | **UNMATCHED** |

---

## East Central North America Regional Contest (2008)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/118](https://solved.ac/problems/archive/contest/118)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | A | **UNMATCHED** |
| `B` | B | **UNMATCHED** |
| `C` | C | **UNMATCHED** |
| `D` | D | **UNMATCHED** |
| `E` | Su-Su-Sudoku | **UNMATCHED** |
| `F` | F | **UNMATCHED** |
| `G` | The Worm Turns | **UNMATCHED** |
| `H` | H | **UNMATCHED** |
| `I` | I | **UNMATCHED** |

---

## East Central North America Regional Contest (2009)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/117](https://solved.ac/problems/archive/contest/117)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | A | **UNMATCHED** |
| `B` | B | **UNMATCHED** |
| `C` | Decompressing in a GIF | **UNMATCHED** |
| `D` | D | **UNMATCHED** |
| `E` | E | **UNMATCHED** |
| `F` | F | **UNMATCHED** |
| `G` | G | **UNMATCHED** |
| `H` | H | **UNMATCHED** |
| `I` | I | **UNMATCHED** |

---

## East Central North America Regional Contest (2010)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/116](https://solved.ac/problems/archive/contest/116)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | A | **UNMATCHED** |
| `B` | B | **UNMATCHED** |
| `C` | Maze | **UNMATCHED** |
| `D` | D | **UNMATCHED** |
| `E` | Polar Bear | **UNMATCHED** |
| `F` | F | **UNMATCHED** |
| `G` | Vampires! | **UNMATCHED** |
| `H` | We’ve Got Chemistry, Babe | **UNMATCHED** |
| `I` | I | **UNMATCHED** |

---

## East Central North America Regional Contest (2011)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/115](https://solved.ac/problems/archive/contest/115)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | A | **UNMATCHED** |
| `B` | B | **UNMATCHED** |
| `C` | C | **UNMATCHED** |
| `D` | D | **UNMATCHED** |
| `E` | E | **UNMATCHED** |
| `F` | F | **UNMATCHED** |
| `G` | G | **UNMATCHED** |
| `H` | H | **UNMATCHED** |
| `I` | I | **UNMATCHED** |

---

## East Central North America Regional Contest (2012)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/114](https://solved.ac/problems/archive/contest/114)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | A | **UNMATCHED** |
| `B` | B | **UNMATCHED** |
| `C` | C | **UNMATCHED** |
| `D` | D | **UNMATCHED** |
| `E` | E | **UNMATCHED** |
| `F` | F | **UNMATCHED** |
| `G` | G | **UNMATCHED** |
| `H` | H | **UNMATCHED** |
| `I` | I | **UNMATCHED** |

---

## East Central North America Regional Contest (2013)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1214](https://solved.ac/problems/archive/contest/1214)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | A | **UNMATCHED** |
| `B` | B | **UNMATCHED** |
| `C` | C | **UNMATCHED** |
| `D` | D | **UNMATCHED** |
| `E` | E | **UNMATCHED** |
| `F` | F | **UNMATCHED** |
| `G` | G | **UNMATCHED** |
| `H` | H | **UNMATCHED** |
| `I` | I | **UNMATCHED** |

---

## East Central North America Regional Contest (2014)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1296](https://solved.ac/problems/archive/contest/1296)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | Con + | **UNMATCHED** |
| `B` | B | **UNMATCHED** |
| `C` | C | **UNMATCHED** |
| `D` | D | **UNMATCHED** |
| `E` | E | **UNMATCHED** |
| `F` | F | **UNMATCHED** |
| `G` | G | **UNMATCHED** |
| `H` | H | **UNMATCHED** |
| `I` | I | **UNMATCHED** |

---

## East Central North America Regional Contest (2015)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1441](https://solved.ac/problems/archive/contest/1441)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2015%20ICPC%20East-Central%20NA%20Regional%20Contest](https://open.kattis.com/problem-sources/2015%20ICPC%20East-Central%20NA%20Regional%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `deletethis` | Delete This! | [https://open.kattis.com/problems/deletethis](https://open.kattis.com/problems/deletethis) |
| `grille` | What | [https://open.kattis.com/problems/grille](https://open.kattis.com/problems/grille) |
| `kenken` | KenKen You Do It? | **UNMATCHED** |
| `rings2` | Rings | [https://open.kattis.com/problems/rings2](https://open.kattis.com/problems/rings2) |
| `solarly` | Being Solarly Systematic | [https://open.kattis.com/problems/solarly](https://open.kattis.com/problems/solarly) |
| `squawk` | Squawk Virus | [https://open.kattis.com/problems/squawk](https://open.kattis.com/problems/squawk) |
| `transportation` | Transportation Delegation | [https://open.kattis.com/problems/transportation](https://open.kattis.com/problems/transportation) |
| `tray` | Tray Bien | [https://open.kattis.com/problems/tray](https://open.kattis.com/problems/tray) |
| `trickshot` | Trick Shot | [https://open.kattis.com/problems/trickshot](https://open.kattis.com/problems/trickshot) |

---

## East Central North America Regional Contest (2016)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1788](https://solved.ac/problems/archive/contest/1788)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2016%20ICPC%20East-Central%20NA%20Regional%20Contest](https://open.kattis.com/problem-sources/2016%20ICPC%20East-Central%20NA%20Regional%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `champagne` | Champagne Towers | **UNMATCHED** |
| `foosball` | Foosball Dynasty | [https://open.kattis.com/problems/foosball](https://open.kattis.com/problems/foosball) |
| `key` | The Key to Cryptography | [https://open.kattis.com/problems/keytocrypto](https://open.kattis.com/problems/keytocrypto) |
| `lost` | Lost in Translation | [https://open.kattis.com/problems/lost](https://open.kattis.com/problems/lost) |
| `redrover` | Red Rover | [https://open.kattis.com/problems/redrover](https://open.kattis.com/problems/redrover) |
| `removalgame` | Removal Game | [https://open.kattis.com/problems/removalgame](https://open.kattis.com/problems/removalgame) |
| `thathanoi` | That | [https://open.kattis.com/problems/thathanoi](https://open.kattis.com/problems/thathanoi) |
| `vin` | Vin Diagrams | [https://open.kattis.com/problems/vindiagrams](https://open.kattis.com/problems/vindiagrams) |
| `waif` | Waif Until Dark | [https://open.kattis.com/problems/waif](https://open.kattis.com/problems/waif) |
| `yesyes` | Yes, Yes, It | [https://open.kattis.com/problems/yesyes](https://open.kattis.com/problems/yesyes) |

---

## East Central North America Regional Contest (2017)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1789](https://solved.ac/problems/archive/contest/1789)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2017%20ICPC%20East-Central%20NA%20Regional%20Contest](https://open.kattis.com/problem-sources/2017%20ICPC%20East-Central%20NA%20Regional%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `abstractart` | Abstract Art | [https://open.kattis.com/problems/abstractart](https://open.kattis.com/problems/abstractart) |
| `amoebas` | Sheba | [https://open.kattis.com/problems/amoebas](https://open.kattis.com/problems/amoebas) |
| `craters` | Craters | [https://open.kattis.com/problems/craters](https://open.kattis.com/problems/craters) |
| `drmmessages` | DRM Messages | [https://open.kattis.com/problems/drmmessages](https://open.kattis.com/problems/drmmessages) |
| `ingestion` | A Question of Ingestion | [https://open.kattis.com/problems/ingestion](https://open.kattis.com/problems/ingestion) |
| `isahasa` | Is-A? Has-A? Who Knowz-A? | [https://open.kattis.com/problems/isahasa](https://open.kattis.com/problems/isahasa) |
| `ontrack` | Keeping On Track | [https://open.kattis.com/problems/ontrack](https://open.kattis.com/problems/ontrack) |
| `throwns` | Game of Throwns | [https://open.kattis.com/problems/throwns](https://open.kattis.com/problems/throwns) |
| `twentyfour` | Twenty Four, Again | [https://open.kattis.com/problems/twentyfour](https://open.kattis.com/problems/twentyfour) |
| `workout` | Workout For a Dumbbell | [https://open.kattis.com/problems/workout](https://open.kattis.com/problems/workout) |

---

## East Central North America Regional Contest (2018)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2001](https://solved.ac/problems/archive/contest/2001)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2018%20ICPC%20East-Central%20NA%20Regional%20Practice%20Contest](https://open.kattis.com/problem-sources/2018%20ICPC%20East-Central%20NA%20Regional%20Practice%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `carvet` | Car Vet | **UNMATCHED** |
| `difference` | Difference | **UNMATCHED** |
| `pearwise` | Pear-wise Voting | **UNMATCHED** |
| `pizzacutting` | Pizza Cutting | **UNMATCHED** |
| `punctiliouscruciverbalist` | The Punctilious Cruciverbalist | **UNMATCHED** |
| `randomproblem` | A Random Problem | **UNMATCHED** |
| `romanholidays` | Roman Holidays | **UNMATCHED** |
| `sequentialyahtzee` | Sequential Yahtzee | **UNMATCHED** |
| `toursdesalesforce` | Tours de Sales Force | **UNMATCHED** |
| `watchyourstep` | Watch Where You Step | **UNMATCHED** |

---

## East Central North America Regional Contest (2019)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2098](https://solved.ac/problems/archive/contest/2098)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2019%20ICPC%20East-Central%20NA%20Regional%20Contest](https://open.kattis.com/problem-sources/2019%20ICPC%20East-Central%20NA%20Regional%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `biotrip` | Bio Trip | [https://open.kattis.com/problems/biotrip](https://open.kattis.com/problems/biotrip) |
| `cheeseifyouplease` | Cheese If You Please | [https://open.kattis.com/problems/cheeseifyouplease](https://open.kattis.com/problems/cheeseifyouplease) |
| `followthebouncingball` | Follow the Bouncing Ball | [https://open.kattis.com/problems/followthebouncingball](https://open.kattis.com/problems/followthebouncingball) |
| `justpassingthrough` | Just Passing Through | [https://open.kattis.com/problems/justpassingthrough](https://open.kattis.com/problems/justpassingthrough) |
| `musicalchairs` | Musical Chairs | [https://open.kattis.com/problems/musicalchairs](https://open.kattis.com/problems/musicalchairs) |
| `outofsorts` | Binary Botch | [https://open.kattis.com/problems/outofsorts](https://open.kattis.com/problems/outofsorts) |
| `remainderreminder` | Remainder Reminder | [https://open.kattis.com/problems/remainderreminder](https://open.kattis.com/problems/remainderreminder) |
| `retribution` | Retribution! | [https://open.kattis.com/problems/retribution](https://open.kattis.com/problems/retribution) |
| `squarerooms` | Squares | [https://open.kattis.com/problems/squarerooms](https://open.kattis.com/problems/squarerooms) |
| `taxededitor` | Taxed Editor | [https://open.kattis.com/problems/taxededitor](https://open.kattis.com/problems/taxededitor) |
| `wherehaveyoubin` | Where Have You Bin | [https://open.kattis.com/problems/wherehaveyoubin](https://open.kattis.com/problems/wherehaveyoubin) |

---

## East Central North America Regional Contest (2020)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2456](https://solved.ac/problems/archive/contest/2456)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2020%20ICPC%20East-Central%20NA%20Regional%20Contest](https://open.kattis.com/problem-sources/2020%20ICPC%20East-Central%20NA%20Regional%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `allinthefamily` | All in the Family | [https://open.kattis.com/problems/allinthefamily](https://open.kattis.com/problems/allinthefamily) |
| `kinkywordsearch` | Kinky Word Search | [https://open.kattis.com/problems/kinkywordsearch](https://open.kattis.com/problems/kinkywordsearch) |
| `mathtrade` | Math Trade | [https://open.kattis.com/problems/mathtrade](https://open.kattis.com/problems/mathtrade) |
| `oreperationsresearch` | Oreperations Research | [https://open.kattis.com/problems/oreperationsresearch](https://open.kattis.com/problems/oreperationsresearch) |
| `overthehill1` | Over The Hill 1 | [https://open.kattis.com/problems/overthehill1](https://open.kattis.com/problems/overthehill1) |
| `overthehill2` | Over The Hill 2 | [https://open.kattis.com/problems/overthehill2](https://open.kattis.com/problems/overthehill2) |
| `rankproblem` | A Rank Problem | [https://open.kattis.com/problems/rankproblem](https://open.kattis.com/problems/rankproblem) |
| `restroommonitor` | Restroom Monitor | [https://open.kattis.com/problems/restroommonitor](https://open.kattis.com/problems/restroommonitor) |
| `scholarslawn` | Scholar | [https://open.kattis.com/problems/scholarslawn](https://open.kattis.com/problems/scholarslawn) |
| `simplysudoku` | Simply Sudoku | [https://open.kattis.com/problems/simplysudoku](https://open.kattis.com/problems/simplysudoku) |
| `weightytomes` | Weighty Tomes | [https://open.kattis.com/problems/weightytomes](https://open.kattis.com/problems/weightytomes) |
| `workers` | Workers of the World Unite! Just Not Too Close. | [https://open.kattis.com/problems/workers](https://open.kattis.com/problems/workers) |

---

## East Central North America Regional Contest (2021)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/3033](https://solved.ac/problems/archive/contest/3033)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2021%20ICPC%20East-Central%20NA%20Regional%20Contest](https://open.kattis.com/problem-sources/2021%20ICPC%20East-Central%20NA%20Regional%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `1sforall` | 1s For All | [https://open.kattis.com/problems/1sforall](https://open.kattis.com/problems/1sforall) |
| `abridgedreading` | Abridged Reading | [https://open.kattis.com/problems/abridgedreading](https://open.kattis.com/problems/abridgedreading) |
| `ballofwhacks` | Ball of Whacks | [https://open.kattis.com/problems/ballofwhacks](https://open.kattis.com/problems/ballofwhacks) |
| `downsizing` | Downsizing | [https://open.kattis.com/problems/downsizing](https://open.kattis.com/problems/downsizing) |
| `gamblinggame` | Gambling Game | [https://open.kattis.com/problems/gamblinggame](https://open.kattis.com/problems/gamblinggame) |
| `growingsomeoobleck` | Growing Some Oobleck | [https://open.kattis.com/problems/growingsomeoobleck](https://open.kattis.com/problems/growingsomeoobleck) |
| `noonerizedspumbers` | Noonerized Spumbers | [https://open.kattis.com/problems/noonerizedspumbers](https://open.kattis.com/problems/noonerizedspumbers) |
| `numble` | Numble | [https://open.kattis.com/problems/numble](https://open.kattis.com/problems/numble) |
| `pinnedfiles` | Pinned Files | [https://open.kattis.com/problems/pinnedfiles](https://open.kattis.com/problems/pinnedfiles) |
| `recycling` | Recycling | [https://open.kattis.com/problems/recycling](https://open.kattis.com/problems/recycling) |
| `stabletable` | Stable Table | [https://open.kattis.com/problems/stabletable](https://open.kattis.com/problems/stabletable) |
| `statues` | Statues | [https://open.kattis.com/problems/statues](https://open.kattis.com/problems/statues) |
| `tombhater` | Tomb Hater | [https://open.kattis.com/problems/tombhater](https://open.kattis.com/problems/tombhater) |

---

## East Central North America Regional Contest (2022)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/3521](https://solved.ac/problems/archive/contest/3521)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2022%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2025%2C%202023%29](https://open.kattis.com/problem-sources/2022%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2025%2C%202023%29)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `amazingpuzzle` | A-Mazing Puzzle | **UNMATCHED** |
| `amusicalquestion` | A Musical Question | **UNMATCHED** |
| `cribbageonsteroids` | Cribbage On Steroids | **UNMATCHED** |
| `hilbertshedgemaze` | Hilbert’s Hedge Maze | **UNMATCHED** |
| `itsabouttime` | It | **UNMATCHED** |
| `nucleotides` | Determining Nucleotide Assortments | **UNMATCHED** |
| `peapattern` | Pea Pattern | **UNMATCHED** |
| `pickingupsteam` | Picking Up Steam | **UNMATCHED** |
| `roadtosavings` | Road to Savings | **UNMATCHED** |
| `simplesolitaire` | Simple Solitaire | **UNMATCHED** |
| `twochartsbecomeone` | Two Charts Become One | **UNMATCHED** |
| `whichwarehouse` | Which Warehouse | **UNMATCHED** |

---

## East Central North America Regional Contest (2023)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4011](https://solved.ac/problems/archive/contest/4011)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2023%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2024%2C%202024%29](https://open.kattis.com/problem-sources/2023%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2024%2C%202024%29)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `apivotalquestion` | A Pivotal Question | **UNMATCHED** |
| `basehilo` | Base Hi-Lo Game | **UNMATCHED** |
| `broadband` | B Road Band | **UNMATCHED** |
| `coltype` | Prof. Fumblemore and the Collatz Conjecture | **UNMATCHED** |
| `convexhullextension` | Convex Hull Extension | **UNMATCHED** |
| `cornhusker` | Cornhusker | **UNMATCHED** |
| `doubleup` | Double Up | **UNMATCHED** |
| `forestforthetrees` | Forest for the Trees | **UNMATCHED** |
| `impartialstrings` | Impartial Strings | **UNMATCHED** |
| `isbnconversion` | ISBN Conversion | **UNMATCHED** |
| `morsepal` | Make Your Own Morse Code Palindrome | **UNMATCHED** |
| `pearls` | Pearls | **UNMATCHED** |
| `plusminusfoursq` | Plus Minus Four Squares | **UNMATCHED** |
| `splitdecisions` | Split Decisions | **UNMATCHED** |
| `walkinthewoods` | Walkinthewoods | **UNMATCHED** |

---

## East Central North America Regional Contest (2024)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4341](https://solved.ac/problems/archive/contest/4341)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2024%20ICPC%20East-Central%20NA%20Regional%20Contest](https://open.kattis.com/problem-sources/2024%20ICPC%20East-Central%20NA%20Regional%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `astackofgold` | A Stack of Gold | **UNMATCHED** |
| `averagesubstringvalue` | Average Substring Value | **UNMATCHED** |
| `balancingart` | Balancing Art | **UNMATCHED** |
| `brownianbears` | Brownian Bears | **UNMATCHED** |
| `fencesmakegoodneighbors` | Fences Make Good Neighbors | **UNMATCHED** |
| `leapfrogencryption` | Leapfrog Encryption | **UNMATCHED** |
| `letterballoons` | Letter Balloons | **UNMATCHED** |
| `marchingorders` | Marching Orders | **UNMATCHED** |
| `ooohisee` | Oooh I See | **UNMATCHED** |
| `pascalmeetsboole` | Pascal Meets Boole | **UNMATCHED** |
| `ponylessexpress` | Pony-less Express | **UNMATCHED** |
| `repetitiveroutes` | Repetitive Routes | **UNMATCHED** |
| `smartpasswordvalidation` | Smart Password Validation | **UNMATCHED** |

---

## East Central North America Regional Contest (2025)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4685](https://solved.ac/problems/archive/contest/4685)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2025%20North%20America%20East%20Division%20Contest](https://open.kattis.com/problem-sources/2025%20North%20America%20East%20Division%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A-Alittleleftoverpizza` | A - A Little Leftover Pizza | [https://open.kattis.com/problems/alittleleftoverpizza](https://open.kattis.com/problems/alittleleftoverpizza) |
| `B-Andor` | B - Andor Strikes Again | [https://open.kattis.com/problems/andor](https://open.kattis.com/problems/andor) |
| `C-Arod` | C - AROD | [https://open.kattis.com/problems/arod](https://open.kattis.com/problems/arod) |
| `D-Butiwanttowin` | D - But I Want to Win | [https://open.kattis.com/problems/butiwanttowin](https://open.kattis.com/problems/butiwanttowin) |
| `E-Chesssolitaire` | E - Chess Solitaire | [https://open.kattis.com/problems/chesssolitaire](https://open.kattis.com/problems/chesssolitaire) |
| `F-Fractionalsequence` | F - Fractional Sequence | [https://open.kattis.com/problems/fractionalsequence](https://open.kattis.com/problems/fractionalsequence) |
| `G-Howmanyballs` | G - How Many Balls? | [https://open.kattis.com/problems/howmanyballs](https://open.kattis.com/problems/howmanyballs) |
| `H-Moveitslowpoke` | H - Move It, Slowpoke! | [https://open.kattis.com/problems/moveitslowpoke](https://open.kattis.com/problems/moveitslowpoke) |
| `I-Numberpyramid` | I - Number Pyramid | [https://open.kattis.com/problems/numberpyramid](https://open.kattis.com/problems/numberpyramid) |
| `J-Polyominotiling` | J - Polyomino Tiling | [https://open.kattis.com/problems/polyominotiling](https://open.kattis.com/problems/polyominotiling) |
| `K-Triptych` | K - Triptych | [https://open.kattis.com/problems/triptych](https://open.kattis.com/problems/triptych) |
| `L-Valleygulls` | L - Valley Gulls | [https://open.kattis.com/problems/valleygulls](https://open.kattis.com/problems/valleygulls) |

---

## ICPC World Finals (2011)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2](https://solved.ac/problems/archive/contest/2)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `addmul` | Addmul | **UNMATCHED** |
| `affine` | Affine | **UNMATCHED** |
| `ancient` | Ancient | **UNMATCHED** |
| `chips` | Chips | **UNMATCHED** |
| `coffee` | Coffee | **UNMATCHED** |
| `magicsticks` | Magic Sticks | **UNMATCHED** |
| `mining` | Mining | **UNMATCHED** |
| `mummy` | Mummy | **UNMATCHED** |
| `pyramids` | Pyramids | **UNMATCHED** |
| `trash` | Trash | **UNMATCHED** |
| `works` | Works | **UNMATCHED** |

---

## ICPC World Finals (2012)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2806](https://solved.ac/problems/archive/contest/2806)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/International%20Collegiate%20Programming%20Contest%20%28ACM-ICPC%29%20World%20Finals%202012](https://open.kattis.com/problem-sources/International%20Collegiate%20Programming%20Contest%20%28ACM-ICPC%29%20World%20Finals%202012)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `asteroids` | Asteroids | [https://open.kattis.com/problems/rangers](https://open.kattis.com/problems/rangers) |
| `bottle` | Bottle | **UNMATCHED** |
| `bustour` | Bus Tour | [https://open.kattis.com/problems/bustour](https://open.kattis.com/problems/bustour) |
| `fibonacci` | Fibonacci | [https://open.kattis.com/problems/fibonacci](https://open.kattis.com/problems/fibonacci) |
| `infiltration` | Infiltration | [https://open.kattis.com/problems/infiltration2](https://open.kattis.com/problems/infiltration2) |
| `keys` | Keys | [https://open.kattis.com/problems/keys](https://open.kattis.com/problems/keys) |
| `minflow` | Minflow | [https://open.kattis.com/problems/minflow](https://open.kattis.com/problems/minflow) |
| `room` | Room | [https://open.kattis.com/problems/roomservice](https://open.kattis.com/problems/roomservice) |
| `safe` | Safe | [https://open.kattis.com/problems/safebet](https://open.kattis.com/problems/safebet) |
| `shortest` | Shortest | [https://open.kattis.com/problems/flightpath](https://open.kattis.com/problems/flightpath) |
| `stacking` | Stacking | [https://open.kattis.com/problems/stacking](https://open.kattis.com/problems/stacking) |
| `takeover` | Takeover | [https://open.kattis.com/problems/takeover](https://open.kattis.com/problems/takeover) |

---

## ICPC World Finals (2013)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1059](https://solved.ac/problems/archive/contest/1059)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/International%20Collegiate%20Programming%20Contest%20%28ACM-ICPC%29%20World%20Finals%202013](https://open.kattis.com/problem-sources/International%20Collegiate%20Programming%20Contest%20%28ACM-ICPC%29%20World%20Finals%202013)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `assembly` | Assembly | [https://open.kattis.com/problems/assembly](https://open.kattis.com/problems/assembly) |
| `bettor` | Bettor | [https://open.kattis.com/problems/bettor](https://open.kattis.com/problems/bettor) |
| `congest` | Congest | [https://open.kattis.com/problems/congest](https://open.kattis.com/problems/congest) |
| `factors` | Factors | [https://open.kattis.com/problems/factors](https://open.kattis.com/problems/factors) |
| `harvard` | Harvard | [https://open.kattis.com/problems/harvard](https://open.kattis.com/problems/harvard) |
| `low` | Low | [https://open.kattis.com/problems/low](https://open.kattis.com/problems/low) |
| `maptiles` | Map Tiles | [https://open.kattis.com/problems/maptiles](https://open.kattis.com/problems/maptiles) |
| `matryoshka` | Matryoshka | [https://open.kattis.com/problems/matryoshka](https://open.kattis.com/problems/matryoshka) |
| `pirate` | Pirate | [https://open.kattis.com/problems/pirate](https://open.kattis.com/problems/pirate) |
| `pollution` | Pollution | [https://open.kattis.com/problems/pollution](https://open.kattis.com/problems/pollution) |
| `tree` | Tree | [https://open.kattis.com/problems/tree](https://open.kattis.com/problems/tree) |

---

## ICPC World Finals (2014)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1250](https://solved.ac/problems/archive/contest/1250)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/International%20Collegiate%20Programming%20Contest%20%28ACM-ICPC%29%20World%20Finals%202014](https://open.kattis.com/problem-sources/International%20Collegiate%20Programming%20Contest%20%28ACM-ICPC%29%20World%20Finals%202014)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `baggage` | Baggage | [https://open.kattis.com/problems/baggage](https://open.kattis.com/problems/baggage) |
| `buffet` | Buffet | [https://open.kattis.com/problems/buffet](https://open.kattis.com/problems/buffet) |
| `crane` | Crane | [https://open.kattis.com/problems/crane](https://open.kattis.com/problems/crane) |
| `game` | Game | [https://open.kattis.com/problems/game](https://open.kattis.com/problems/game) |
| `maze` | Maze | [https://open.kattis.com/problems/maze](https://open.kattis.com/problems/maze) |
| `messenger` | Messenger | [https://open.kattis.com/problems/messenger](https://open.kattis.com/problems/messenger) |
| `metal` | Metal | [https://open.kattis.com/problems/metal](https://open.kattis.com/problems/metal) |
| `pachinko` | Pachinko | [https://open.kattis.com/problems/pachinko](https://open.kattis.com/problems/pachinko) |
| `sensor` | Sensor | [https://open.kattis.com/problems/sensor](https://open.kattis.com/problems/sensor) |
| `skiing` | Skiing | [https://open.kattis.com/problems/skiing](https://open.kattis.com/problems/skiing) |
| `surveillance` | Surveillance | [https://open.kattis.com/problems/surveillance](https://open.kattis.com/problems/surveillance) |
| `wires` | Wires | [https://open.kattis.com/problems/wire](https://open.kattis.com/problems/wire) |

---

## ICPC World Finals (2015)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1347](https://solved.ac/problems/archive/contest/1347)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/International%20Collegiate%20Programming%20Contest%20%28ACM-ICPC%29%20World%20Finals%202015](https://open.kattis.com/problem-sources/International%20Collegiate%20Programming%20Contest%20%28ACM-ICPC%29%20World%20Finals%202015)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `artichoke` | Artichoke | [https://open.kattis.com/problems/artichoke](https://open.kattis.com/problems/artichoke) |
| `asteroids` | Asteroids | [https://open.kattis.com/problems/asteroids](https://open.kattis.com/problems/asteroids) |
| `catering` | Catering | [https://open.kattis.com/problems/catering](https://open.kattis.com/problems/catering) |
| `cheese` | Cheese | [https://open.kattis.com/problems/cheese](https://open.kattis.com/problems/cheese) |
| `evolution` | Evolution | [https://open.kattis.com/problems/evolution](https://open.kattis.com/problems/evolution) |
| `keyboard` | Keyboard | [https://open.kattis.com/problems/keyboard](https://open.kattis.com/problems/keyboard) |
| `pipe` | Pipe | [https://open.kattis.com/problems/pipe](https://open.kattis.com/problems/pipe) |
| `qanat` | Qanat | [https://open.kattis.com/problems/qanat](https://open.kattis.com/problems/qanat) |
| `ship` | Ship | [https://open.kattis.com/problems/ship](https://open.kattis.com/problems/ship) |
| `tiles` | Tiles | [https://open.kattis.com/problems/tiles](https://open.kattis.com/problems/tiles) |
| `tours` | Tours | [https://open.kattis.com/problems/tours](https://open.kattis.com/problems/tours) |
| `weather` | Weather | [https://open.kattis.com/problems/weather](https://open.kattis.com/problems/weather) |
| `windows` | Windows | [https://open.kattis.com/problems/windows](https://open.kattis.com/problems/windows) |

---

## ICPC World Finals (2016)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1490](https://solved.ac/problems/archive/contest/1490)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/International%20Collegiate%20Programming%20Contest%20%28ACM-ICPC%29%20World%20Finals%202016](https://open.kattis.com/problem-sources/International%20Collegiate%20Programming%20Contest%20%28ACM-ICPC%29%20World%20Finals%202016)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `balanceddiet` | Balanced Diet | [https://open.kattis.com/problems/balanceddiet2](https://open.kattis.com/problems/balanceddiet2) |
| `branch` | Branch | [https://open.kattis.com/problems/branch](https://open.kattis.com/problems/branch) |
| `ceiling` | Ceiling | [https://open.kattis.com/problems/ceiling](https://open.kattis.com/problems/ceiling) |
| `clock` | Clock | [https://open.kattis.com/problems/clock](https://open.kattis.com/problems/clock) |
| `foreveryoung` | Forever Young | [https://open.kattis.com/problems/foreveryoung](https://open.kattis.com/problems/foreveryoung) |
| `mars` | Mars | [https://open.kattis.com/problems/mars](https://open.kattis.com/problems/mars) |
| `oil` | Oil | [https://open.kattis.com/problems/oil2](https://open.kattis.com/problems/oil2) |
| `puzzle` | Puzzle | [https://open.kattis.com/problems/puzzle2](https://open.kattis.com/problems/puzzle2) |
| `rivers` | Rivers | [https://open.kattis.com/problems/rivers](https://open.kattis.com/problems/rivers) |
| `roadtimes` | Road Times | [https://open.kattis.com/problems/roadtimes](https://open.kattis.com/problems/roadtimes) |
| `spin` | Spin | [https://open.kattis.com/problems/spin](https://open.kattis.com/problems/spin) |
| `string` | String | [https://open.kattis.com/problems/string](https://open.kattis.com/problems/string) |
| `swapspace` | Swap Space | [https://open.kattis.com/problems/swapspace](https://open.kattis.com/problems/swapspace) |

---

## ICPC World Finals (2017)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1747](https://solved.ac/problems/archive/contest/1747)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/International%20Collegiate%20Programming%20Contest%20%28ACM-ICPC%29%20World%20Finals%202017](https://open.kattis.com/problem-sources/International%20Collegiate%20Programming%20Contest%20%28ACM-ICPC%29%20World%20Finals%202017)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A-airport` | Airport | [https://open.kattis.com/problems/airport](https://open.kattis.com/problems/airport) |
| `B-clue` | Clue | [https://open.kattis.com/problems/clue](https://open.kattis.com/problems/clue) |
| `C-improbable` | Improbable | [https://open.kattis.com/problems/improbable](https://open.kattis.com/problems/improbable) |
| `D-money` | Money | [https://open.kattis.com/problems/money](https://open.kattis.com/problems/money) |
| `E-speed` | Speed | [https://open.kattis.com/problems/speed](https://open.kattis.com/problems/speed) |
| `F-posterize` | Posterize | [https://open.kattis.com/problems/posterize](https://open.kattis.com/problems/posterize) |
| `G-replicate` | Replicate | [https://open.kattis.com/problems/replicate](https://open.kattis.com/problems/replicate) |
| `H-scenery` | Scenery | [https://open.kattis.com/problems/scenery](https://open.kattis.com/problems/scenery) |
| `I-secretchamber` | Secretchamber | [https://open.kattis.com/problems/secretchamber](https://open.kattis.com/problems/secretchamber) |
| `J-sonofpipestream` | Sonofpipestream | [https://open.kattis.com/problems/sonofpipestream](https://open.kattis.com/problems/sonofpipestream) |
| `K-tarotshamboast` | Tarotshamboast | [https://open.kattis.com/problems/tarotshamboast](https://open.kattis.com/problems/tarotshamboast) |
| `L-visual` | Visual | [https://open.kattis.com/problems/visual](https://open.kattis.com/problems/visual) |

---

## ICPC World Finals (2018)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1859](https://solved.ac/problems/archive/contest/1859)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/International%20Collegiate%20Programming%20Contest%20%28ACM-ICPC%29%20World%20Finals%202018](https://open.kattis.com/problem-sources/International%20Collegiate%20Programming%20Contest%20%28ACM-ICPC%29%20World%20Finals%202018)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A-catch` | Catch | [https://open.kattis.com/problems/catch](https://open.kattis.com/problems/catch) |
| `B-comma` | Comma | [https://open.kattis.com/problems/comma](https://open.kattis.com/problems/comma) |
| `C-conquertheworld` | Conquertheworld | [https://open.kattis.com/problems/conquertheworld](https://open.kattis.com/problems/conquertheworld) |
| `D-gemisland` | Gemisland | [https://open.kattis.com/problems/gemisland](https://open.kattis.com/problems/gemisland) |
| `E-gettingjump` | Gettingjump | [https://open.kattis.com/problems/gettingjump](https://open.kattis.com/problems/gettingjump) |
| `F-gowithflow` | Gowithflow | [https://open.kattis.com/problems/gowithflow](https://open.kattis.com/problems/gowithflow) |
| `G-pandapreserve` | Pandapreserve | [https://open.kattis.com/problems/pandapreserve](https://open.kattis.com/problems/pandapreserve) |
| `H-single` | Single | [https://open.kattis.com/problems/single](https://open.kattis.com/problems/single) |
| `I-triangles` | Triangles | [https://open.kattis.com/problems/triangles3](https://open.kattis.com/problems/triangles3) |
| `J-uncrossedknights` | Uncrossedknights | [https://open.kattis.com/problems/uncrossedknights](https://open.kattis.com/problems/uncrossedknights) |
| `K-newfiber` | Newfiber | [https://open.kattis.com/problems/newfiber](https://open.kattis.com/problems/newfiber) |

---

## ICPC World Finals (2019)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2021](https://solved.ac/problems/archive/contest/2021)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/ACM-ICPC%20World%20Finals%202019](https://open.kattis.com/problem-sources/ACM-ICPC%20World%20Finals%202019)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A-azulejos` | Azulejos | [https://open.kattis.com/problems/azulejos](https://open.kattis.com/problems/azulejos) |
| `B-beautifulbridges` | Beautifulbridges | [https://open.kattis.com/problems/beautifulbridges](https://open.kattis.com/problems/beautifulbridges) |
| `C-checks` | Checks | [https://open.kattis.com/problems/checks](https://open.kattis.com/problems/checks) |
| `D-circular` | Circular | [https://open.kattis.com/problems/circular](https://open.kattis.com/problems/circular) |
| `E-deadend` | Deadend | [https://open.kattis.com/problems/deadend](https://open.kattis.com/problems/deadend) |
| `F-directingrainfall` | Directingrainfall | [https://open.kattis.com/problems/directingrainfall](https://open.kattis.com/problems/directingrainfall) |
| `G-firstofhername` | Firstofhername | [https://open.kattis.com/problems/firstofhername](https://open.kattis.com/problems/firstofhername) |
| `H-hobsonstrains` | Hobsonstrains | [https://open.kattis.com/problems/hobsonstrains](https://open.kattis.com/problems/hobsonstrains) |
| `I-karel` | Karel | [https://open.kattis.com/problems/karel](https://open.kattis.com/problems/karel) |
| `J-minigolf` | Minigolf | [https://open.kattis.com/problems/minigolf](https://open.kattis.com/problems/minigolf) |
| `K-trafficblights` | Trafficblights | [https://open.kattis.com/problems/trafficblights](https://open.kattis.com/problems/trafficblights) |

---

## ICPC World Finals (2020)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2805](https://solved.ac/problems/archive/contest/2805)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/ICPC%20World%20Finals%202020](https://open.kattis.com/problem-sources/ICPC%20World%20Finals%202020)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A-cardiology` | Cardiology | [https://open.kattis.com/problems/cardiology](https://open.kattis.com/problems/cardiology) |
| `B-speedlimit` | Speedlimit | [https://open.kattis.com/problems/speedlimit2](https://open.kattis.com/problems/speedlimit2) |
| `C-domes` | Domes | [https://open.kattis.com/problems/domes](https://open.kattis.com/problems/domes) |
| `D-genefolding` | Genefolding | [https://open.kattis.com/problems/genefolding](https://open.kattis.com/problems/genefolding) |
| `E-landscape` | Landscape | [https://open.kattis.com/problems/landscape](https://open.kattis.com/problems/landscape) |
| `F-leylines` | Leylines | [https://open.kattis.com/problems/leylines](https://open.kattis.com/problems/leylines) |
| `G-opportunity` | Opportunity | [https://open.kattis.com/problems/opportunity](https://open.kattis.com/problems/opportunity) |
| `H-qcqc` | Qcqc | [https://open.kattis.com/problems/qcqc](https://open.kattis.com/problems/qcqc) |
| `I-quests` | Quests | [https://open.kattis.com/problems/quests](https://open.kattis.com/problems/quests) |
| `J-snoproblem` | Snoproblem | [https://open.kattis.com/problems/snoproblem](https://open.kattis.com/problems/snoproblem) |
| `K-space` | Space | [https://open.kattis.com/problems/space](https://open.kattis.com/problems/space) |
| `L-sweepstakes` | Sweepstakes | [https://open.kattis.com/problems/sweepstakes](https://open.kattis.com/problems/sweepstakes) |
| `M-trailingdigits` | Trailingdigits | [https://open.kattis.com/problems/trailingdigits](https://open.kattis.com/problems/trailingdigits) |
| `N-vector` | Vector | [https://open.kattis.com/problems/vector](https://open.kattis.com/problems/vector) |
| `O-planets` | Planets | [https://open.kattis.com/problems/planets](https://open.kattis.com/problems/planets) |

---

## ICPC World Finals (2021)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/3230](https://solved.ac/problems/archive/contest/3230)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/ICPC%20World%20Finals%202021](https://open.kattis.com/problem-sources/ICPC%20World%20Finals%202021)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A-cross` | Cross | **UNMATCHED** |
| `B-dungeoncrawler` | Dungeoncrawler | [https://open.kattis.com/problems/dungeoncrawler](https://open.kattis.com/problems/dungeoncrawler) |
| `C-fairdivision` | Fairdivision | [https://open.kattis.com/problems/fairdivision2](https://open.kattis.com/problems/fairdivision2) |
| `D-guardiansofthegallery` | Guardiansofthegallery | [https://open.kattis.com/problems/guardiansofthegallery](https://open.kattis.com/problems/guardiansofthegallery) |
| `E-marked` | Marked | **UNMATCHED** |
| `F-islands` | Islands | [https://open.kattis.com/problems/islandsfromthesky](https://open.kattis.com/problems/islandsfromthesky) |
| `G-mosaicbrowsing` | Mosaicbrowsing | [https://open.kattis.com/problems/mosaicbrowsing](https://open.kattis.com/problems/mosaicbrowsing) |
| `H-prehistoricprograms` | Prehistoricprograms | [https://open.kattis.com/problems/prehistoricprograms](https://open.kattis.com/problems/prehistoricprograms) |
| `I-spiderwalk` | Spiderwalk | [https://open.kattis.com/problems/spiderwalk](https://open.kattis.com/problems/spiderwalk) |
| `J-splitstream` | Splitstream | [https://open.kattis.com/problems/splitstream](https://open.kattis.com/problems/splitstream) |
| `K-meme` | Meme | **UNMATCHED** |
| `L-whereami` | Whereami | [https://open.kattis.com/problems/whereami](https://open.kattis.com/problems/whereami) |

---

## ICPC World Finals (2022)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4210](https://solved.ac/problems/archive/contest/4210)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/ICPC%20World%20Finals%202022](https://open.kattis.com/problem-sources/ICPC%20World%20Finals%202022)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `P-turningred` | Turningred | **UNMATCHED** |
| `Q-doingthecontainershuffle` | Doingthecontainershuffle | [https://open.kattis.com/problems/doingthecontainershuffle](https://open.kattis.com/problems/doingthecontainershuffle) |
| `R-zoomanagement` | Zoomanagement | [https://open.kattis.com/problems/zoomanagement](https://open.kattis.com/problems/zoomanagement) |
| `S-bridgingthegap` | Bridgingthegap | **UNMATCHED** |
| `T-carlsvacation` | Carlsvacation | **UNMATCHED** |
| `U-toytraintracks` | Toytraintracks | [https://open.kattis.com/problems/toytraintracks](https://open.kattis.com/problems/toytraintracks) |
| `V-threekindsofdice` | Threekindsofdice | **UNMATCHED** |
| `W-riddleofthesphinx` | Riddleofthesphinx | **UNMATCHED** |
| `X-quartets` | Quartets | [https://open.kattis.com/problems/quartets](https://open.kattis.com/problems/quartets) |
| `Y-compression` | Compression | [https://open.kattis.com/problems/compression2](https://open.kattis.com/problems/compression2) |
| `Z-archaeologicalrecovery` | Archaeologicalrecovery | [https://open.kattis.com/problems/archaeologicalrecovery](https://open.kattis.com/problems/archaeologicalrecovery) |

---

## ICPC World Finals (2023)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4211](https://solved.ac/problems/archive/contest/4211)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/ICPC%20World%20Finals%202023](https://open.kattis.com/problem-sources/ICPC%20World%20Finals%202023)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A-riddleofthesphinx` | Riddleofthesphinx | **UNMATCHED** |
| `B-schedule` | Schedule | [https://open.kattis.com/problems/schedule](https://open.kattis.com/problems/schedule) |
| `C-threekindsofdice` | Threekindsofdice | **UNMATCHED** |
| `D-carlsvacation` | Carlsvacation | **UNMATCHED** |
| `E-arecurringproblem` | Arecurringproblem | [https://open.kattis.com/problems/arecurringproblem](https://open.kattis.com/problems/arecurringproblem) |
| `F-tiltingtiles` | Tiltingtiles | [https://open.kattis.com/problems/tiltingtiles](https://open.kattis.com/problems/tiltingtiles) |
| `G-turningred` | Turningred | **UNMATCHED** |
| `H-jetlag` | Jetlag | [https://open.kattis.com/problems/jetlag](https://open.kattis.com/problems/jetlag) |
| `I-waterworld` | Waterworld | [https://open.kattis.com/problems/waterworld](https://open.kattis.com/problems/waterworld) |
| `J-bridgingthegap` | Bridgingthegap | **UNMATCHED** |
| `K-aleaiactaest` | Aleaiactaest | [https://open.kattis.com/problems/aleaiactaest](https://open.kattis.com/problems/aleaiactaest) |

---

## ICPC World Finals (2024)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4292](https://solved.ac/problems/archive/contest/4292)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/ICPC%20World%20Finals%202024](https://open.kattis.com/problem-sources/ICPC%20World%20Finals%202024)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A-billboards` | Billboards | [https://open.kattis.com/problems/billboards](https://open.kattis.com/problems/billboards) |
| `B-bingoforthewin` | Bingoforthewin | [https://open.kattis.com/problems/bingoforthewin](https://open.kattis.com/problems/bingoforthewin) |
| `C-citizenship` | Citizenship | [https://open.kattis.com/problems/citizenship](https://open.kattis.com/problems/citizenship) |
| `D-doubleshorsebackwrestling` | Doubleshorsebackwrestling | [https://open.kattis.com/problems/doubleshorsebackwrestling](https://open.kattis.com/problems/doubleshorsebackwrestling) |
| `E-flippingcontainer` | Flippingcontainer | [https://open.kattis.com/problems/flippingcontainer](https://open.kattis.com/problems/flippingcontainer) |
| `F-friendlyrivalry` | Friendlyrivalry | [https://open.kattis.com/problems/friendlyrivalry](https://open.kattis.com/problems/friendlyrivalry) |
| `G-kindergarten` | Kindergarten | [https://open.kattis.com/problems/kindergarten2](https://open.kattis.com/problems/kindergarten2) |
| `H-maxwellsdemon` | Maxwellsdemon | [https://open.kattis.com/problems/maxwellsdemon](https://open.kattis.com/problems/maxwellsdemon) |
| `I-steppeonit` | Steppeonit | [https://open.kattis.com/problems/steppeonit](https://open.kattis.com/problems/steppeonit) |
| `J-thesilkroad` | Thesilkroad | [https://open.kattis.com/problems/thesilkroad](https://open.kattis.com/problems/thesilkroad) |
| `K-towerofnoiha` | Towerofnoiha | [https://open.kattis.com/problems/towerofnoiha](https://open.kattis.com/problems/towerofnoiha) |
| `L-whereaminow` | Whereaminow | [https://open.kattis.com/problems/whereaminow](https://open.kattis.com/problems/whereaminow) |

---

## ICPC World Finals (2025)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4567](https://solved.ac/problems/archive/contest/4567)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/ICPC%20World%20Finals%202025](https://open.kattis.com/problem-sources/ICPC%20World%20Finals%202025)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A-askewedreasoning` | Askewedreasoning | [https://open.kattis.com/problems/askewedreasoning](https://open.kattis.com/problems/askewedreasoning) |
| `B-blackboardgame` | Blackboardgame | [https://open.kattis.com/problems/blackboardgame](https://open.kattis.com/problems/blackboardgame) |
| `C-brideofpipestream` | Brideofpipestream | [https://open.kattis.com/problems/brideofpipestream](https://open.kattis.com/problems/brideofpipestream) |
| `D-buggyrover` | Buggyrover | [https://open.kattis.com/problems/buggyrover](https://open.kattis.com/problems/buggyrover) |
| `E-delivery` | Delivery | [https://open.kattis.com/problems/deliveryservice](https://open.kattis.com/problems/deliveryservice) |
| `F-herdingcats` | Herdingcats | [https://open.kattis.com/problems/herdingcats](https://open.kattis.com/problems/herdingcats) |
| `G-lavamoat` | Lavamoat | [https://open.kattis.com/problems/lavamoat](https://open.kattis.com/problems/lavamoat) |
| `H-scorevalues` | Scorevalues | [https://open.kattis.com/problems/scorevalues](https://open.kattis.com/problems/scorevalues) |
| `I-slotmachine` | Slotmachine | [https://open.kattis.com/problems/slotmachine](https://open.kattis.com/problems/slotmachine) |
| `J-stackingcups` | Stackingcups | [https://open.kattis.com/problems/stackingcups](https://open.kattis.com/problems/stackingcups) |
| `K-treasuremap` | Treasuremap | [https://open.kattis.com/problems/treasuremap2](https://open.kattis.com/problems/treasuremap2) |
| `L-walkingonsunshine` | Walkingonsunshine | [https://open.kattis.com/problems/walkingonsunshine](https://open.kattis.com/problems/walkingonsunshine) |

---

## German Collegiate Programming Championship (2010)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/219](https://solved.ac/problems/archive/contest/219)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | Absurd prices | **UNMATCHED** |
| `B` | Cheating or Not | **UNMATCHED** |
| `C` | Counterattack | **UNMATCHED** |
| `D` | Field Plan | **UNMATCHED** |
| `E` | Hacking | **UNMATCHED** |
| `F` | Last Minute Constructions | **UNMATCHED** |
| `G` | Lineup | **UNMATCHED** |
| `H` | Polynomial Estimates | **UNMATCHED** |
| `I` | Soccer Bets | **UNMATCHED** |
| `J` | The Two-ball Game | **UNMATCHED** |
| `K` | To score or not to score | **UNMATCHED** |

---

## German Collegiate Programming Championship (2016)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1509](https://solved.ac/problems/archive/contest/1509)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/German%20Collegiate%20Programming%20Contest%20%28GCPC%29%202016](https://open.kattis.com/problem-sources/German%20Collegiate%20Programming%20Contest%20%28GCPC%29%202016)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `buffet` | Buffet | **UNMATCHED** |
| `celestialmap` | Celestial Map | [https://open.kattis.com/problems/celestialmap](https://open.kattis.com/problems/celestialmap) |
| `commonknowledge` | Common Knowledge | [https://open.kattis.com/problems/commonknowledge](https://open.kattis.com/problems/commonknowledge) |
| `correctingcheeseburgers` | Correcting Cheeseburgers | [https://open.kattis.com/problems/correctingcheeseburgers](https://open.kattis.com/problems/correctingcheeseburgers) |
| `dwarves` | Dwarves | [https://open.kattis.com/problems/dwarves](https://open.kattis.com/problems/dwarves) |
| `formula` | Formula | [https://open.kattis.com/problems/formula](https://open.kattis.com/problems/formula) |
| `knapsack` | Knapsack | [https://open.kattis.com/problems/knapsack2](https://open.kattis.com/problems/knapsack2) |
| `matrixcypher` | Matrix Cypher | [https://open.kattis.com/problems/matrixcypher](https://open.kattis.com/problems/matrixcypher) |
| `maze` | Maze | [https://open.kattis.com/problems/maze3](https://open.kattis.com/problems/maze3) |
| `modelrailroad` | Model Railroad | [https://open.kattis.com/problems/modelrailroad](https://open.kattis.com/problems/modelrailroad) |
| `oneway` | Oneway | [https://open.kattis.com/problems/oneway](https://open.kattis.com/problems/oneway) |
| `packingcases` | Packingcases | **UNMATCHED** |
| `routing` | Routing | [https://open.kattis.com/problems/routing2](https://open.kattis.com/problems/routing2) |
| `selling` | Selling | [https://open.kattis.com/problems/selling](https://open.kattis.com/problems/selling) |

---

## German Collegiate Programming Championship (2019)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2119](https://solved.ac/problems/archive/contest/2119)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/German%20Collegiate%20Programming%20Contest%20%28GCPC%29%202019](https://open.kattis.com/problem-sources/German%20Collegiate%20Programming%20Contest%20%28GCPC%29%202019)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `assessinggenomes` | Assessing Genomes | [https://open.kattis.com/problems/assessinggenomes](https://open.kattis.com/problems/assessinggenomes) |
| `bouldering` | Bouldering | [https://open.kattis.com/problems/bouldering](https://open.kattis.com/problems/bouldering) |
| `colourfulchameleons` | Colourful Chameleons | [https://open.kattis.com/problems/colourfulchameleons](https://open.kattis.com/problems/colourfulchameleons) |
| `dungeoncrawler` | Dungeon Crawler | **UNMATCHED** |
| `electionmeddling` | Election Meddling | [https://open.kattis.com/problems/electionmeddling](https://open.kattis.com/problems/electionmeddling) |
| `finalstandings` | Final Standings | [https://open.kattis.com/problems/finalstandings](https://open.kattis.com/problems/finalstandings) |
| `gameoffallingblocks` | Game of Falling Blocks | [https://open.kattis.com/problems/gameoffallingblocks](https://open.kattis.com/problems/gameoffallingblocks) |
| `historicalmaths` | Historical Maths | [https://open.kattis.com/problems/historicalmaths](https://open.kattis.com/problems/historicalmaths) |
| `insertionorder` | Insertion Order | [https://open.kattis.com/problems/insertionorder](https://open.kattis.com/problems/insertionorder) |
| `jazzenthusiast` | Jazz Enthusiast | [https://open.kattis.com/problems/jazzenthusiast](https://open.kattis.com/problems/jazzenthusiast) |
| `keepingthedogsout` | Keeping the Dogs Out | [https://open.kattis.com/problems/keepingthedogsout](https://open.kattis.com/problems/keepingthedogsout) |
| `longexposure` | Long-Exposure Photography | [https://open.kattis.com/problems/longexposure](https://open.kattis.com/problems/longexposure) |
| `moveandmeet` | Move & Meet | [https://open.kattis.com/problems/moveandmeet](https://open.kattis.com/problems/moveandmeet) |

---

## German Collegiate Programming Championship (2020)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2427](https://solved.ac/problems/archive/contest/2427)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/German%20Collegiate%20Programming%20Contest%20%28GCPC%29%202020](https://open.kattis.com/problem-sources/German%20Collegiate%20Programming%20Contest%20%28GCPC%29%202020)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `adolescent` | Adolescent Architecture | [https://open.kattis.com/problems/adolescentarchitecture](https://open.kattis.com/problems/adolescentarchitecture) |
| `bookshelf` | Bookshelf Building | [https://open.kattis.com/problems/bookshelfbuilding](https://open.kattis.com/problems/bookshelfbuilding) |
| `confined` | Confined Catching | [https://open.kattis.com/problems/confinedcatching](https://open.kattis.com/problems/confinedcatching) |
| `dominoes` | Decorative Dominoes | [https://open.kattis.com/problems/decorativedominoes](https://open.kattis.com/problems/decorativedominoes) |
| `errands` | Exhausting Errands | [https://open.kattis.com/problems/exhaustingerrands](https://open.kattis.com/problems/exhaustingerrands) |
| `flipflow` | Flip Flow | [https://open.kattis.com/problems/flipflow](https://open.kattis.com/problems/flipflow) |
| `gravitygrid` | Gravity Grid | [https://open.kattis.com/problems/gravitygrid](https://open.kattis.com/problems/gravitygrid) |
| `harbour` | Hectic Harbour | [https://open.kattis.com/problems/hecticharbour](https://open.kattis.com/problems/hecticharbour) |
| `impressive` | Impressive Integers | [https://open.kattis.com/problems/impressiveintegers](https://open.kattis.com/problems/impressiveintegers) |
| `journey` | Jeopardised Journey | [https://open.kattis.com/problems/jeopardisedjourney](https://open.kattis.com/problems/jeopardisedjourney) |
| `knightly` | Knightly Knowledge | [https://open.kattis.com/problems/knightlyknowledge](https://open.kattis.com/problems/knightlyknowledge) |
| `lecturing` | Lexicographical Lecturing | [https://open.kattis.com/problems/lexicographiclecturing](https://open.kattis.com/problems/lexicographiclecturing) |
| `mixtape` | Mixtape Management | [https://open.kattis.com/problems/mixtapemanagement](https://open.kattis.com/problems/mixtapemanagement) |

---

## German Collegiate Programming Championship (2021)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/3127](https://solved.ac/problems/archive/contest/3127)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/German%20Collegiate%20Programming%20Contest%20%28GCPC%29%202021](https://open.kattis.com/problem-sources/German%20Collegiate%20Programming%20Contest%20%28GCPC%29%202021)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `arcade` | Amusement Arcade | [https://open.kattis.com/problems/arcade2](https://open.kattis.com/problems/arcade2) |
| `brentering` | Brexiting and Brentering | [https://open.kattis.com/problems/brentering](https://open.kattis.com/problems/brentering) |
| `cardtrading` | Card Trading | [https://open.kattis.com/problems/cardtrading2](https://open.kattis.com/problems/cardtrading2) |
| `decryptingzodiac` | Decrypting Zodiac | [https://open.kattis.com/problems/decryptingzodiac](https://open.kattis.com/problems/decryptingzodiac) |
| `excursion` | Excursion to Porvoo | [https://open.kattis.com/problems/excursiontoporvoo](https://open.kattis.com/problems/excursiontoporvoo) |
| `flappy` | Flappy Bird | [https://open.kattis.com/problems/flappy](https://open.kattis.com/problems/flappy) |
| `griddelivery` | Grid Delivery | [https://open.kattis.com/problems/griddelivery](https://open.kattis.com/problems/griddelivery) |
| `harbour2` | Hectic Harbour II | [https://open.kattis.com/problems/harbour2](https://open.kattis.com/problems/harbour2) |
| `indexcase` | Index Case | [https://open.kattis.com/problems/indexcase](https://open.kattis.com/problems/indexcase) |
| `joinedsessions` | Joined Sessions | [https://open.kattis.com/problems/joinedsessions](https://open.kattis.com/problems/joinedsessions) |
| `killjoys` | Killjoys | [https://open.kattis.com/problems/killjoys](https://open.kattis.com/problems/killjoys) |
| `lookingforwaldo` | Looking for Waldo | [https://open.kattis.com/problems/lookingforwaldo](https://open.kattis.com/problems/lookingforwaldo) |
| `montyshall` | Monty | [https://open.kattis.com/problems/montyshall](https://open.kattis.com/problems/montyshall) |
| `navigation` | Natural Navigation | [https://open.kattis.com/problems/navigation](https://open.kattis.com/problems/navigation) |

---

## German Collegiate Programming Championship (2022)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/3223](https://solved.ac/problems/archive/contest/3223)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/German%20Collegiate%20Programming%20Contest%20%28GCPC%29%202022](https://open.kattis.com/problem-sources/German%20Collegiate%20Programming%20Contest%20%28GCPC%29%202022)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `alternativearchitecture` | Alternative Architecture | [https://open.kattis.com/problems/alternativearchitecture](https://open.kattis.com/problems/alternativearchitecture) |
| `breedingbugs` | Breeding Bugs | [https://open.kattis.com/problems/breedingbugs](https://open.kattis.com/problems/breedingbugs) |
| `chaoticconstruction` | Chaotic Construction | [https://open.kattis.com/problems/chaoticconstruction](https://open.kattis.com/problems/chaoticconstruction) |
| `diabolicdoofenshmirtz` | Diabolic Doofenshmirtz | [https://open.kattis.com/problems/diabolicdoofenshmirtz](https://open.kattis.com/problems/diabolicdoofenshmirtz) |
| `enjoyableentree` | Enjoyable Entree | [https://open.kattis.com/problems/enjoyableentree](https://open.kattis.com/problems/enjoyableentree) |
| `formulaflatland` | Formula Flatland | [https://open.kattis.com/problems/formulaflatland](https://open.kattis.com/problems/formulaflatland) |
| `guessinggame` | Guessing Game | [https://open.kattis.com/problems/guessinggame4](https://open.kattis.com/problems/guessinggame4) |
| `hardcorehangman` | Hardcore Hangman | [https://open.kattis.com/problems/hardcorehangman](https://open.kattis.com/problems/hardcorehangman) |
| `improvingit` | Improving IT | [https://open.kattis.com/problems/improvingit](https://open.kattis.com/problems/improvingit) |
| `jestingjabberwocky` | Jesting Jabberwocky | [https://open.kattis.com/problems/jestingjabberwocky](https://open.kattis.com/problems/jestingjabberwocky) |
| `kokids` | K.O. Kids | [https://open.kattis.com/problems/kokids](https://open.kattis.com/problems/kokids) |
| `lotsofland` | Lots of Land | [https://open.kattis.com/problems/lotsofland](https://open.kattis.com/problems/lotsofland) |
| `mirrormadness` | Mirror Madness | [https://open.kattis.com/problems/mirrormadness](https://open.kattis.com/problems/mirrormadness) |

---

## German Collegiate Programming Championship (2023)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/3625](https://solved.ac/problems/archive/contest/3625)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/German%20Collegiate%20Programming%20Contest%20%28GCPC%29%202023](https://open.kattis.com/problem-sources/German%20Collegiate%20Programming%20Contest%20%28GCPC%29%202023)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | Adolescent Architecture 2 | [https://open.kattis.com/problems/adolescentarchitecture2](https://open.kattis.com/problems/adolescentarchitecture2) |
| `B` | Balloon Darts | [https://open.kattis.com/problems/balloondarts](https://open.kattis.com/problems/balloondarts) |
| `C` | Cosmic Commute | [https://open.kattis.com/problems/cosmiccommute](https://open.kattis.com/problems/cosmiccommute) |
| `D` | DnD Dice | [https://open.kattis.com/problems/dnddice](https://open.kattis.com/problems/dnddice) |
| `E` | Eszett | [https://open.kattis.com/problems/eszett](https://open.kattis.com/problems/eszett) |
| `F` | Freestyle Masonry | [https://open.kattis.com/problems/freestylemasonry](https://open.kattis.com/problems/freestylemasonry) |
| `G` | German Conference for Public Counting | [https://open.kattis.com/problems/germanconferenceforpubliccounting](https://open.kattis.com/problems/germanconferenceforpubliccounting) |
| `H` | Highway Combinatorics | [https://open.kattis.com/problems/highwaycombinatorics](https://open.kattis.com/problems/highwaycombinatorics) |
| `I` | Investigating Frog Behaviour on Lily Pad Patterns | [https://open.kattis.com/problems/investigatingfrogbehaviouronlilypadpatterns](https://open.kattis.com/problems/investigatingfrogbehaviouronlilypadpatterns) |
| `J` | Japanese Lottery | [https://open.kattis.com/problems/japaneselottery](https://open.kattis.com/problems/japaneselottery) |
| `K` | Kaldorian Knights | [https://open.kattis.com/problems/kaldorianknights](https://open.kattis.com/problems/kaldorianknights) |
| `L` | Loop Invariant | [https://open.kattis.com/problems/loopinvariant](https://open.kattis.com/problems/loopinvariant) |
| `M` | Mischievous Math | [https://open.kattis.com/problems/mischievousmath](https://open.kattis.com/problems/mischievousmath) |

---

## German Collegiate Programming Championship (2026)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/German%20Collegiate%20Programming%20Contest%20%28GCPC%29%202026](https://open.kattis.com/problem-sources/German%20Collegiate%20Programming%20Contest%20%28GCPC%29%202026)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | Attracting Attendees | [https://open.kattis.com/problems/attractingattendees](https://open.kattis.com/problems/attractingattendees) |
| `B` | Bye Bye Bilbo | [https://open.kattis.com/problems/byebyebilbo](https://open.kattis.com/problems/byebyebilbo) |
| `C` | Crosses and Circles | [https://open.kattis.com/problems/crossesandcircles](https://open.kattis.com/problems/crossesandcircles) |
| `D` | Delphi Danger | [https://open.kattis.com/problems/delphidanger](https://open.kattis.com/problems/delphidanger) |
| `E` | Egocentric Expedition | [https://open.kattis.com/problems/egocentricexpedition](https://open.kattis.com/problems/egocentricexpedition) |
| `F` | Fighting Fraud | [https://open.kattis.com/problems/fightingfraud](https://open.kattis.com/problems/fightingfraud) |
| `G` | Garbled Garden | **UNMATCHED** |
| `H` | Historical Hits | [https://open.kattis.com/problems/historicalhits](https://open.kattis.com/problems/historicalhits) |
| `I` | Incremented Itinerary | [https://open.kattis.com/problems/incrementeditinerary](https://open.kattis.com/problems/incrementeditinerary) |
| `J` | Junior Joining | [https://open.kattis.com/problems/juniorjoining](https://open.kattis.com/problems/juniorjoining) |
| `K` | Keeping Cows | [https://open.kattis.com/problems/keepingcows](https://open.kattis.com/problems/keepingcows) |
| `L` | Lyrical Leisure | [https://open.kattis.com/problems/lyricalleisure](https://open.kattis.com/problems/lyricalleisure) |
| `M` | Mirror Magic | [https://open.kattis.com/problems/mirrormagic](https://open.kattis.com/problems/mirrormagic) |

---

## Greater New York Regional Contest (2000)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/727](https://solved.ac/problems/archive/contest/727)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `problems` | Scramble Sort | **UNMATCHED** |

---

## Greater New York Regional Contest (2016)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1573](https://solved.ac/problems/archive/contest/1573)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2016%20Greater%20New%20York%20Region%20ACM%20Regional%20Contest](https://open.kattis.com/problem-sources/2016%20Greater%20New%20York%20Region%20ACM%20Regional%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `data` | Data | **UNMATCHED** |

---

## Greater New York Regional Contest (2022)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/3555](https://solved.ac/problems/archive/contest/3555)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2022%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2025%2C%202023%29](https://open.kattis.com/problem-sources/2022%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2025%2C%202023%29)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A-Cornhole` | A ∙ Cornhole | **UNMATCHED** |
| `B-SumOfRemainders` | B ∙ Sum of Remainders | **UNMATCHED** |
| `C-Quotdoku` | C ∙ Quotdoku | **UNMATCHED** |
| `D-PythagTrips` | D ∙ Counting Pythagorean Triples | [https://open.kattis.com/problems/countingsatellites](https://open.kattis.com/problems/countingsatellites) |
| `E-ClarissasCannolis` | E ∙ Clarissa’s Conical Cannolis | **UNMATCHED** |
| `F-BusyAsaBee` | F - Busy As a Bee | **UNMATCHED** |
| `G-TriLink` | G∙Linked Triangles | **UNMATCHED** |
| `H-YouYouSeeWhat` | H ∙ You You See What? | **UNMATCHED** |
| `I-Caravan` | I ∙ Caravan Trip Plans | **UNMATCHED** |
| `J-PSet` | J ∙ PSET | **UNMATCHED** |

---

## Greater New York Regional Contest (2023)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4013](https://solved.ac/problems/archive/contest/4013)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2023%20North%20America%20East%20Division%20Contest](https://open.kattis.com/problem-sources/2023%20North%20America%20East%20Division%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A-cornhusker` | Cornhusker | [https://open.kattis.com/problems/cornhusker](https://open.kattis.com/problems/cornhusker) |
| `B-apivotalquestion` | Apivotalquestion | [https://open.kattis.com/problems/apivotalquestion](https://open.kattis.com/problems/apivotalquestion) |
| `C-coltype` | Prof. Fumblemore and the Collatz Conjecture | [https://open.kattis.com/problems/coltype](https://open.kattis.com/problems/coltype) |
| `D-doubleup` | Double Up | [https://open.kattis.com/problems/doubleup](https://open.kattis.com/problems/doubleup) |
| `F-forestforthetrees` | Forestforthetrees | [https://open.kattis.com/problems/forestforthetrees2](https://open.kattis.com/problems/forestforthetrees2) |
| `G-pearls` | Pearls | [https://open.kattis.com/problems/pearls](https://open.kattis.com/problems/pearls) |
| `H-walkinthewoods` | Walkinthewoods | [https://open.kattis.com/problems/walkinthewoods](https://open.kattis.com/problems/walkinthewoods) |
| `I-isbnconversion` | Isbnconversion | [https://open.kattis.com/problems/isbnconversion](https://open.kattis.com/problems/isbnconversion) |
| `J-basehilo` | Base Hi-Lo Game | **UNMATCHED** |
| `K-plusminusfoursq` | Plus Minus Four Squares | **UNMATCHED** |
| `L-morsepal` | Make Your Own Morse Code Palindrome | **UNMATCHED** |

---

## Greater New York Regional Contest (2024)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4342](https://solved.ac/problems/archive/contest/4342)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2024%20North%20America%20East%20Division%20Contest](https://open.kattis.com/problem-sources/2024%20North%20America%20East%20Division%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A-Astackofgold` | A Stack of Gold | [https://open.kattis.com/problems/astackofgold](https://open.kattis.com/problems/astackofgold) |
| `B-Averagesubstringvalue` | Average Substring Value | [https://open.kattis.com/problems/averagesubstringvalue](https://open.kattis.com/problems/averagesubstringvalue) |
| `C-Balancingart` | Balancing Art | [https://open.kattis.com/problems/balancingart](https://open.kattis.com/problems/balancingart) |
| `D-Brownianbears` | Brownian Bears | [https://open.kattis.com/problems/brownianbears](https://open.kattis.com/problems/brownianbears) |
| `E-Fencesmakegoodneighbors` | Fences Make Good Neighbors | [https://open.kattis.com/problems/fencesmakegoodneighbors](https://open.kattis.com/problems/fencesmakegoodneighbors) |
| `F-Leapfrogencryption` | Leapfrog Encryption | [https://open.kattis.com/problems/leapfrogencryption](https://open.kattis.com/problems/leapfrogencryption) |
| `G-Letterballoons` | Letter Balloons | **UNMATCHED** |
| `H-Marchingorders` | Marching Orders | [https://open.kattis.com/problems/marchingorders](https://open.kattis.com/problems/marchingorders) |
| `I-Ooohisee` | Oooh I See | [https://open.kattis.com/problems/ooohisee](https://open.kattis.com/problems/ooohisee) |
| `J-Pascalmeetsboole` | Pascal Meets Boole | [https://open.kattis.com/problems/pascalmeetsboole](https://open.kattis.com/problems/pascalmeetsboole) |
| `K-Ponylessexpress` | Pony-less Express | [https://open.kattis.com/problems/ponylessexpress](https://open.kattis.com/problems/ponylessexpress) |
| `L-Repetitiveroutes` | Repetitive Routes | [https://open.kattis.com/problems/repetitiveroutes](https://open.kattis.com/problems/repetitiveroutes) |
| `M-Smartpasswordvalidation` | Smart Password Validation | [https://open.kattis.com/problems/smartpasswordvalidation](https://open.kattis.com/problems/smartpasswordvalidation) |

---

## Greater New York Regional Contest (2025)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2025%20North%20America%20East%20Division%20Contest](https://open.kattis.com/problem-sources/2025%20North%20America%20East%20Division%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A-Alittleleftoverpizza` | A - A Little Leftover Pizza | [https://open.kattis.com/problems/alittleleftoverpizza](https://open.kattis.com/problems/alittleleftoverpizza) |
| `B-Andor` | B - Andor Strikes Again | [https://open.kattis.com/problems/andor](https://open.kattis.com/problems/andor) |
| `C-Arod` | C - AROD | [https://open.kattis.com/problems/arod](https://open.kattis.com/problems/arod) |
| `D-Butiwanttowin` | D - But I Want to Win | [https://open.kattis.com/problems/butiwanttowin](https://open.kattis.com/problems/butiwanttowin) |
| `E-Chesssolitaire` | E - Chess Solitaire | [https://open.kattis.com/problems/chesssolitaire](https://open.kattis.com/problems/chesssolitaire) |
| `F-Fractionalsequence` | F - Fractional Sequence | [https://open.kattis.com/problems/fractionalsequence](https://open.kattis.com/problems/fractionalsequence) |
| `G-Howmanyballs` | G - How Many Balls? | [https://open.kattis.com/problems/howmanyballs](https://open.kattis.com/problems/howmanyballs) |
| `H-Moveitslowpoke` | H - Move It, Slowpoke! | [https://open.kattis.com/problems/moveitslowpoke](https://open.kattis.com/problems/moveitslowpoke) |
| `I-Numberpyramid` | I - Number Pyramid | [https://open.kattis.com/problems/numberpyramid](https://open.kattis.com/problems/numberpyramid) |
| `J-Polyominotiling` | J - Polyomino Tiling | [https://open.kattis.com/problems/polyominotiling](https://open.kattis.com/problems/polyominotiling) |
| `K-Triptych` | K - Triptych | [https://open.kattis.com/problems/triptych](https://open.kattis.com/problems/triptych) |
| `L-Valleygulls` | L - Valley Gulls | [https://open.kattis.com/problems/valleygulls](https://open.kattis.com/problems/valleygulls) |

---

## Mid-Central USA Regional Contest (2004)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/148](https://solved.ac/problems/archive/contest/148)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2004%20ACM%20ICPC%20Mid-Central%20North%20American%20Regional%20Contest](https://open.kattis.com/problem-sources/2004%20ACM%20ICPC%20Mid-Central%20North%20American%20Regional%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `blots` | Ink Blots | [https://open.kattis.com/problems/inkblots](https://open.kattis.com/problems/inkblots) |
| `flow` | Flow Layout | [https://open.kattis.com/problems/flowlayout](https://open.kattis.com/problems/flowlayout) |
| `order` | Symmetric Order | [https://open.kattis.com/problems/symmetricorder](https://open.kattis.com/problems/symmetricorder) |
| `permcode` | Permutation Code | [https://open.kattis.com/problems/permcode](https://open.kattis.com/problems/permcode) |
| `pxs` | Primary X-Subfactor Series | [https://open.kattis.com/problems/pxs](https://open.kattis.com/problems/pxs) |
| `speed` | Speed Limit | [https://open.kattis.com/problems/speedlimit](https://open.kattis.com/problems/speedlimit) |
| `triangle` | Triangle Cuts | [https://open.kattis.com/problems/trianglecuts](https://open.kattis.com/problems/trianglecuts) |

---

## Mid-Central USA Regional Contest (2005)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/147](https://solved.ac/problems/archive/contest/147)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `bookshelf` | Overflowing Bookshelf | **UNMATCHED** |
| `connect` | Connect | **UNMATCHED** |
| `copier` | Copier Reduction | **UNMATCHED** |
| `digits` | Consecutive Digits | **UNMATCHED** |
| `graduate` | Time to Graduate | **UNMATCHED** |
| `lizards` | Leapin' Lizards | **UNMATCHED** |
| `netiq` | Netiquette | **UNMATCHED** |
| `painter` | Painter | **UNMATCHED** |
| `pascal` | Pascal's Travels | **UNMATCHED** |

---

## Mid-Central USA Regional Contest (2006)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/146](https://solved.ac/problems/archive/contest/146)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `falling` | Falling Ice | **UNMATCHED** |
| `frugal` | Frugal Search | **UNMATCHED** |
| `gorelian` | Go Go Gorelians | **UNMATCHED** |
| `linear` | Linear Pachinko | **UNMATCHED** |
| `quicksum` | Quicksum | **UNMATCHED** |
| `root` | Root of the Problem | **UNMATCHED** |
| `surprise` | Surprising Strings | **UNMATCHED** |

---

## Mid-Central USA Regional Contest (2007)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/145](https://solved.ac/problems/archive/contest/145)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `bits` | Persistent Bits | **UNMATCHED** |
| `eds` | Electronic Document Security | **UNMATCHED** |
| `guard` | Guard | **UNMATCHED** |
| `percent` | The Seven Percent Solution | **UNMATCHED** |
| `rock` | Rock Skipping | **UNMATCHED** |
| `slink` | Slink | **UNMATCHED** |
| `typesetting` | Typesetting | **UNMATCHED** |

---

## Mid-Central USA Regional Contest (2008)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/144](https://solved.ac/problems/archive/contest/144)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2008%20ICPC%20North%20America%20Mid-Central%20Regional](https://open.kattis.com/problem-sources/2008%20ICPC%20North%20America%20Mid-Central%20Regional)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `bridges` | The Bridges of San Mochti | [https://open.kattis.com/problems/bridgesofsanmochti](https://open.kattis.com/problems/bridgesofsanmochti) |
| `bulletin` | Bulletin Board | [https://open.kattis.com/problems/bulletinboard](https://open.kattis.com/problems/bulletinboard) |
| `firefly` | Lampyridae Teleportae | [https://open.kattis.com/problems/lampyridaeteleportae](https://open.kattis.com/problems/lampyridaeteleportae) |
| `hex` | Hex Tile Equations | [https://open.kattis.com/problems/hextileequations](https://open.kattis.com/problems/hextileequations) |
| `maze` | Line & Circle Maze | [https://open.kattis.com/problems/linecirclemaze](https://open.kattis.com/problems/linecirclemaze) |
| `parity` | Parity | [https://open.kattis.com/problems/parity](https://open.kattis.com/problems/parity) |
| `serials` | Serial Numbers | [https://open.kattis.com/problems/serialnumbers](https://open.kattis.com/problems/serialnumbers) |
| `steg` | Steganography | [https://open.kattis.com/problems/steganography](https://open.kattis.com/problems/steganography) |

---

## Mid-Central USA Regional Contest (2009)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/143](https://solved.ac/problems/archive/contest/143)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2009%20ACM%20Mid-Central%20USA%20Regional%20Programming%20Contest](https://open.kattis.com/problem-sources/2009%20ACM%20Mid-Central%20USA%20Regional%20Programming%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `cell` | Cell Towers | [https://open.kattis.com/problems/celltowers](https://open.kattis.com/problems/celltowers) |
| `dull` | DuLL | [https://open.kattis.com/problems/dull](https://open.kattis.com/problems/dull) |
| `dup` | Duplicate Removal | [https://open.kattis.com/problems/duplicateremoval](https://open.kattis.com/problems/duplicateremoval) |
| `gnome` | Gnome Sequencing | [https://open.kattis.com/problems/gnomesequencing](https://open.kattis.com/problems/gnomesequencing) |
| `numeral` | A to Z Numerals | [https://open.kattis.com/problems/a2znumerals](https://open.kattis.com/problems/a2znumerals) |
| `ripoff` | RIPOFF | [https://open.kattis.com/problems/ripoff](https://open.kattis.com/problems/ripoff) |
| `rps` | Rock, Paper, Scissors | [https://open.kattis.com/problems/rps](https://open.kattis.com/problems/rps) |
| `up` | Duplicate Removal | [https://open.kattis.com/problems/duplicateremoval](https://open.kattis.com/problems/duplicateremoval) |
| `vienna` | Black Vienna | [https://open.kattis.com/problems/blackvienna2](https://open.kattis.com/problems/blackvienna2) |

---

## Mid-Central USA Regional Contest (2010)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/142](https://solved.ac/problems/archive/contest/142)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `calc` | Judges' Time Calculation | **UNMATCHED** |
| `collision` | Queen Collisions | **UNMATCHED** |
| `compress` | Image Compression | **UNMATCHED** |
| `egypt` | Egyptian Fractions | **UNMATCHED** |
| `mad` | Mad Scientist | **UNMATCHED** |
| `mirror` | Mirror, Mirror on the Wall | **UNMATCHED** |
| `search` | Quick Search | **UNMATCHED** |
| `top` | Top This | **UNMATCHED** |
| `voting` | Voting | **UNMATCHED** |

---

## Mid-Central USA Regional Contest (2011)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/141](https://solved.ac/problems/archive/contest/141)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `crash` | Crash and Go(relians) | **UNMATCHED** |
| `laser` | Laser Tag | **UNMATCHED** |
| `magnets` | Refrigerator Magnets | **UNMATCHED** |
| `multiply` | Grade School Multiplication | **UNMATCHED** |
| `pizza` | Pizza Pricing | **UNMATCHED** |
| `shut` | Shut the Box | **UNMATCHED** |
| `sokoban` | Sokoban | **UNMATCHED** |
| `sudominoku` | Su-domino-ku | **UNMATCHED** |

---

## Mid-Central USA Regional Contest (2012)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/140](https://solved.ac/problems/archive/contest/140)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `bounce` | Bounce | **UNMATCHED** |
| `juggle` | Jugglefest | **UNMATCHED** |
| `lru` | LRU Caching | **UNMATCHED** |
| `revenge` | Pythagoras's Revenge | **UNMATCHED** |
| `slice` | Any Way You Slice It | **UNMATCHED** |

---

## Mid-Central USA Regional Contest (2017)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1790](https://solved.ac/problems/archive/contest/1790)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2017%20ICPC%20Mid-Central%20Regional](https://open.kattis.com/problem-sources/2017%20ICPC%20Mid-Central%20Regional)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `batterup` | Batter Up | **UNMATCHED** |
| `faultyrobot` | Faulty Robot | [https://open.kattis.com/problems/faultyrobot](https://open.kattis.com/problems/faultyrobot) |
| `honeyheist` | Honey Heist | [https://open.kattis.com/problems/honeyheist](https://open.kattis.com/problems/honeyheist) |
| `hopscotch` | Hopscotch | [https://open.kattis.com/problems/hopscotch](https://open.kattis.com/problems/hopscotch) |
| `nineknights` | Nine Knights | [https://open.kattis.com/problems/nineknights](https://open.kattis.com/problems/nineknights) |
| `nodup` | Nodup | [https://open.kattis.com/problems/nodup](https://open.kattis.com/problems/nodup) |
| `orderlyclass` | Orderly Class | [https://open.kattis.com/problems/orderlyclass](https://open.kattis.com/problems/orderlyclass) |
| `politics` | Politics | [https://open.kattis.com/problems/politics](https://open.kattis.com/problems/politics) |
| `ringstring` | Ring String | **UNMATCHED** |

---

## Mid-Central USA Regional Contest (2018)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1946](https://solved.ac/problems/archive/contest/1946)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2018%20ICPC%20Mid-Central%20Regional](https://open.kattis.com/problem-sources/2018%20ICPC%20Mid-Central%20Regional)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `coprimeintegers` | Coprime Integers | [https://open.kattis.com/problems/coprimeintegers](https://open.kattis.com/problems/coprimeintegers) |
| `copsandrobbers` | Cops and Robbers | [https://open.kattis.com/problems/copsandrobbers](https://open.kattis.com/problems/copsandrobbers) |
| `exam` | Exam | [https://open.kattis.com/problems/exam](https://open.kattis.com/problems/exam) |
| `goatrope` | Goat Rope | [https://open.kattis.com/problems/goatrope](https://open.kattis.com/problems/goatrope) |
| `heirsdilemma` | Heir’s Dilemma | [https://open.kattis.com/problems/heirsdilemma](https://open.kattis.com/problems/heirsdilemma) |
| `illiteracy` | Illiteracy | [https://open.kattis.com/problems/illiteracy](https://open.kattis.com/problems/illiteracy) |
| `mobilization` | Mobilization | [https://open.kattis.com/problems/mobilization](https://open.kattis.com/problems/mobilization) |
| `pokerhand` | Poker Hand | [https://open.kattis.com/problems/pokerhand](https://open.kattis.com/problems/pokerhand) |
| `randommanhattan` | Randommanhattan | [https://open.kattis.com/problems/randommanhattan](https://open.kattis.com/problems/randommanhattan) |
| `repeatedsubstrings` | Repeated Substrings | [https://open.kattis.com/problems/repeatedsubstrings](https://open.kattis.com/problems/repeatedsubstrings) |
| `treehouses` | Treehouses | [https://open.kattis.com/problems/treehouses](https://open.kattis.com/problems/treehouses) |

---

## North American Mid-Atlantic Region (2003)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/167](https://solved.ac/problems/archive/contest/167)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `problem-A` | Problem A | **UNMATCHED** |
| `problem-B` | Problem B | **UNMATCHED** |
| `problem-C` | Problem C | **UNMATCHED** |
| `problem-D` | Problem D | **UNMATCHED** |
| `problem-E` | Problem E | **UNMATCHED** |
| `problem-F` | Problem F | **UNMATCHED** |
| `problem-G` | Problem G | **UNMATCHED** |
| `problem-H` | Problem H | **UNMATCHED** |

---

## North American Mid-Atlantic Region (2004)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/166](https://solved.ac/problems/archive/contest/166)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `auction` | Auction | **UNMATCHED** |
| `cabling` | Cabling | **UNMATCHED** |
| `checkbook` | Checkbook | **UNMATCHED** |
| `contest` | Contest | **UNMATCHED** |
| `football` | Football | **UNMATCHED** |
| `ghost` | GHOST | **UNMATCHED** |
| `house` | House | **UNMATCHED** |
| `hubs` | Hubs | **UNMATCHED** |
| `moles` | 0 /0 | **UNMATCHED** |

---

## North American Mid-Atlantic Region (2005)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/165](https://solved.ac/problems/archive/contest/165)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `change` | Change | **UNMATCHED** |
| `clock` | Clock | **UNMATCHED** |
| `dominoes` | Dominoes | **UNMATCHED** |
| `extrusion` | Extrusion | **UNMATCHED** |
| `mobiles` | Mobiles | **UNMATCHED** |
| `righthand` | Righthand | **UNMATCHED** |
| `vitamins` | Vitamins | **UNMATCHED** |
| `wordstack` | WordStack | **UNMATCHED** |

---

## North American Mid-Atlantic Region (2006)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/164](https://solved.ac/problems/archive/contest/164)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `convert` | Convert | **UNMATCHED** |
| `crosswords` | Crosswords | **UNMATCHED** |
| `doors` | Doors | **UNMATCHED** |
| `gypsymoths` | Gypsy Moths | **UNMATCHED** |
| `marbles` | Marbles | **UNMATCHED** |
| `mirror` | Mirror | **UNMATCHED** |
| `permutation` | Permutation | **UNMATCHED** |
| `shrews` | Shrews | **UNMATCHED** |
| `zonedout` | Zoned Out | **UNMATCHED** |

---

## North American Mid-Atlantic Region (2007)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/163](https://solved.ac/problems/archive/contest/163)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | First Composed, Then Transposed | **UNMATCHED** |
| `B` | Mobiles Alabama | **UNMATCHED** |
| `C` | Out of Sight | **UNMATCHED** |
| `D` | Witness Redaction Plan | **UNMATCHED** |
| `E` | Safety in Alchemy | **UNMATCHED** |
| `F` | Potholes | **UNMATCHED** |
| `G` | Bulls and Cows | **UNMATCHED** |
| `H` | The Turn of the Shrew | **UNMATCHED** |

---

## North American Mid-Atlantic Region (2008)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/162](https://solved.ac/problems/archive/contest/162)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A-close` | Close | **UNMATCHED** |
| `B-eyesore` | Eyesore | **UNMATCHED** |
| `C-trie` | Trie | **UNMATCHED** |
| `D-arabia` | Arabia | **UNMATCHED** |
| `E-resist` | Resist | **UNMATCHED** |
| `F-combination` | Combination | **UNMATCHED** |
| `G-stems` | Stems | **UNMATCHED** |
| `H-signal` | Signal | **UNMATCHED** |

---

## North American Mid-Atlantic Region (2009)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/161](https://solved.ac/problems/archive/contest/161)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `blockgame` | Block Game | **UNMATCHED** |
| `euclid` | Euclid | **UNMATCHED** |
| `manhattan` | Manhattan | **UNMATCHED** |
| `ninja` | Ninja | **UNMATCHED** |
| `parlay` | Parlay | **UNMATCHED** |
| `pool` | Pool | **UNMATCHED** |
| `stIves` | Stives | **UNMATCHED** |
| `stringer` | Stringer | **UNMATCHED** |
| `wordchain` | Wordchain | **UNMATCHED** |

---

## North American Mid-Atlantic Region (2010)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/160](https://solved.ac/problems/archive/contest/160)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A_odometer` | Odometer | **UNMATCHED** |
| `B_balloons` | Balloons | **UNMATCHED** |
| `C_cells` | Cells | **UNMATCHED** |
| `D_bitcounting` | Bitcounting | **UNMATCHED** |
| `E_abstract` | Abstract | **UNMATCHED** |
| `F_rollercoaster` | Rollercoaster | **UNMATCHED** |
| `G_spycam` | Spycam | **UNMATCHED** |
| `H_underground` | Underground | **UNMATCHED** |

---

## North American Mid-Atlantic Region (2011)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/159](https://solved.ac/problems/archive/contest/159)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `roadrally` | Road Rally | **UNMATCHED** |

---

## North American Mid-Atlantic Region (2014)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `3DPrinter` | 3Dprinter | **UNMATCHED** |
| `BeingEqual` | Beingequal | **UNMATCHED** |
| `Excess` | Excess | **UNMATCHED** |
| `Hyphenation` | Hyphenation | **UNMATCHED** |
| `Knight` | Knight | **UNMATCHED** |
| `Sewing` | Sewing | **UNMATCHED** |
| `Stealth` | Stealth | **UNMATCHED** |
| `Vertiwords` | Verti-Words | **UNMATCHED** |
| `romans` | Romans | **UNMATCHED** |

---

## North American Mid-Atlantic Region (2015)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4244](https://solved.ac/problems/archive/contest/4244)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `Arrrgument` | Avoiding an Arrrgument | **UNMATCHED** |
| `Gardener` | The Scheming Gardener | **UNMATCHED** |
| `Hounded` | Hounded by Indecision | **UNMATCHED** |
| `Kinfolk` | Kinfolk | **UNMATCHED** |
| `OfTheChildren` | Of the Children | **UNMATCHED** |
| `Refract` | Refract Facts | **UNMATCHED** |
| `Sequences` | Positive Con Sequences | **UNMATCHED** |
| `TalkingNumbers` | Talking About Numbers | **UNMATCHED** |
| `moon` | Lunacy | **UNMATCHED** |

---

## North American Mid-Atlantic Region (2017)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4246](https://solved.ac/problems/archive/contest/4246)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2017%20ICPC%20Mid-Atlantic%20Regional%20Contest](https://open.kattis.com/problem-sources/2017%20ICPC%20Mid-Atlantic%20Regional%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `avoidingairports` | Avoiding Airports | [https://open.kattis.com/problems/avoidingairports](https://open.kattis.com/problems/avoidingairports) |
| `haikuformatting` | Haiku | [https://open.kattis.com/problems/haikuformatting](https://open.kattis.com/problems/haikuformatting) |
| `longlongstrings` | Long Long Strings | [https://open.kattis.com/problems/longlongstrings](https://open.kattis.com/problems/longlongstrings) |
| `purplerain` | Purple Rain | [https://open.kattis.com/problems/purplerain](https://open.kattis.com/problems/purplerain) |
| `rainbowroads` | Rainbow Roads | [https://open.kattis.com/problems/rainbowroads](https://open.kattis.com/problems/rainbowroads) |
| `romans` | Roaming Romans | **UNMATCHED** |
| `securitybadge` | Security Badge | [https://open.kattis.com/problems/securitybadge](https://open.kattis.com/problems/securitybadge) |
| `spinningup` | Spinning Up Palindromes | [https://open.kattis.com/problems/spinningup](https://open.kattis.com/problems/spinningup) |
| `stararrangements` | Star Arrangements | [https://open.kattis.com/problems/stararrangements](https://open.kattis.com/problems/stararrangements) |

---

## North American Mid-Atlantic Region (2018)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4247](https://solved.ac/problems/archive/contest/4247)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2018%20ICPC%20Mid-Atlantic%20Regional%20Contest](https://open.kattis.com/problem-sources/2018%20ICPC%20Mid-Atlantic%20Regional%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `collusionontwowheels` | Collusion on Two Wheels | [https://open.kattis.com/problems/collusionontwowheels](https://open.kattis.com/problems/collusionontwowheels) |
| `findpoly` | Find Poly | [https://open.kattis.com/problems/findpoly](https://open.kattis.com/problems/findpoly) |
| `lostisclosetolose` | Lost is Close to Lose | [https://open.kattis.com/problems/lostisclosetolose](https://open.kattis.com/problems/lostisclosetolose) |
| `neutralground` | Neutral Ground | [https://open.kattis.com/problems/neutralground](https://open.kattis.com/problems/neutralground) |
| `orphanbackups` | Orphan Backups | [https://open.kattis.com/problems/orphanbackups](https://open.kattis.com/problems/orphanbackups) |
| `pickingupthedice` | Picking Up the Dice | [https://open.kattis.com/problems/pickingupthedice](https://open.kattis.com/problems/pickingupthedice) |
| `playingtheslots` | Playing the Slots | [https://open.kattis.com/problems/playingtheslots](https://open.kattis.com/problems/playingtheslots) |
| `romans` | Roaming Romans | **UNMATCHED** |
| `tightlypacked` | Tightly Packed | [https://open.kattis.com/problems/tightlypacked](https://open.kattis.com/problems/tightlypacked) |

---

## North American Mid-Atlantic Region (2022)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/3506](https://solved.ac/problems/archive/contest/3506)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2022%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2025%2C%202023%29](https://open.kattis.com/problem-sources/2022%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2025%2C%202023%29)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `alchemy` | Alchemy | [https://open.kattis.com/problems/alchemy2](https://open.kattis.com/problems/alchemy2) |
| `blueberrywaffle` | Blueberrywaffle | [https://open.kattis.com/problems/blueberrywaffle](https://open.kattis.com/problems/blueberrywaffle) |
| `branchmanager` | Branch Manager | [https://open.kattis.com/problems/branchmanager](https://open.kattis.com/problems/branchmanager) |
| `chocolatechipfabrication` | Chocolate Chip Fabrication | [https://open.kattis.com/problems/chocolatechipfabrication](https://open.kattis.com/problems/chocolatechipfabrication) |
| `colortubes` | Color Tubes | [https://open.kattis.com/problems/colortubes](https://open.kattis.com/problems/colortubes) |
| `countingsatellites` | Counting Satellites | [https://open.kattis.com/problems/countingsatellites](https://open.kattis.com/problems/countingsatellites) |
| `creativeaccounting` | Creative Accounting | [https://open.kattis.com/problems/creativeaccounting](https://open.kattis.com/problems/creativeaccounting) |
| `erodingpillars` | Eroding Pillars | [https://open.kattis.com/problems/erodingpillars](https://open.kattis.com/problems/erodingpillars) |
| `everythingisanail` | Everythingisanail | [https://open.kattis.com/problems/everythingisanail](https://open.kattis.com/problems/everythingisanail) |
| `exponentexchange` | Exponent Exchange | [https://open.kattis.com/problems/exponentexchange](https://open.kattis.com/problems/exponentexchange) |
| `fadingwind` | Fading Wind | [https://open.kattis.com/problems/fadingwind](https://open.kattis.com/problems/fadingwind) |
| `familyvisits` | Family Visits | [https://open.kattis.com/problems/familyvisits](https://open.kattis.com/problems/familyvisits) |
| `foodprocessor` | Foodprocessor | [https://open.kattis.com/problems/foodprocessor](https://open.kattis.com/problems/foodprocessor) |
| `loneknight` | Lone Knight | [https://open.kattis.com/problems/loneknight](https://open.kattis.com/problems/loneknight) |
| `streetsahead` | Streetsahead | [https://open.kattis.com/problems/streetsahead](https://open.kattis.com/problems/streetsahead) |
| `sunandmoon` | Sunandmoon | [https://open.kattis.com/problems/sunandmoon](https://open.kattis.com/problems/sunandmoon) |
| `threedice` | Three Dice | [https://open.kattis.com/problems/threedice](https://open.kattis.com/problems/threedice) |
| `trianglecontainment` | Triangle Containment | [https://open.kattis.com/problems/trianglecontainment](https://open.kattis.com/problems/trianglecontainment) |

---

## North American Mid-Atlantic Region (2023)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4161](https://solved.ac/problems/archive/contest/4161)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2023%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2024%2C%202024%29](https://open.kattis.com/problem-sources/2023%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2024%2C%202024%29)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `abcstring` | ABC String | [https://open.kattis.com/problems/abcstring](https://open.kattis.com/problems/abcstring) |
| `acappellarecording` | Acappellarecording | [https://open.kattis.com/problems/acappellarecording](https://open.kattis.com/problems/acappellarecording) |
| `acceptableseatingarrangements` | Acceptableseatingarrangements | [https://open.kattis.com/problems/acceptableseatingarrangements](https://open.kattis.com/problems/acceptableseatingarrangements) |
| `balancedtreepath` | Balanced Tree Path | [https://open.kattis.com/problems/balancedtreepath](https://open.kattis.com/problems/balancedtreepath) |
| `champernowneverification` | Champernowne Verification | [https://open.kattis.com/problems/champernowneverification](https://open.kattis.com/problems/champernowneverification) |
| `crammingforfinals` | Cramming for Finals | [https://open.kattis.com/problems/crammingforfinals](https://open.kattis.com/problems/crammingforfinals) |
| `eccentricexcursion` | Eccentric Excursion | [https://open.kattis.com/problems/eccentricexcursion](https://open.kattis.com/problems/eccentricexcursion) |
| `fourdierolls` | Fourdierolls | [https://open.kattis.com/problems/fourdierolls](https://open.kattis.com/problems/fourdierolls) |
| `itemselection` | Item Selection | [https://open.kattis.com/problems/itemselection](https://open.kattis.com/problems/itemselection) |
| `matrixfraud` | Matrix Fraud | [https://open.kattis.com/problems/matrixfraud](https://open.kattis.com/problems/matrixfraud) |
| `oncallteam` | On-Call Team | [https://open.kattis.com/problems/oncallteam](https://open.kattis.com/problems/oncallteam) |
| `orderedproblemset` | Orderedproblemset | [https://open.kattis.com/problems/orderedproblemset](https://open.kattis.com/problems/orderedproblemset) |
| `rampantgrowth` | Rampantgrowth | [https://open.kattis.com/problems/rampantgrowth](https://open.kattis.com/problems/rampantgrowth) |
| `rangeediting` | Range Editing | [https://open.kattis.com/problems/rangeediting](https://open.kattis.com/problems/rangeediting) |
| `segmentdrawing` | Segment Drawing | [https://open.kattis.com/problems/segmentdrawing](https://open.kattis.com/problems/segmentdrawing) |
| `sequenceguessing` | Sequence Guessing | [https://open.kattis.com/problems/sequenceguessing](https://open.kattis.com/problems/sequenceguessing) |
| `streetsbehind` | Streets Behind | [https://open.kattis.com/problems/streetsbehind](https://open.kattis.com/problems/streetsbehind) |
| `training` | Training | [https://open.kattis.com/problems/training](https://open.kattis.com/problems/training) |
| `triplesevens` | Triplesevens | [https://open.kattis.com/problems/triplesevens](https://open.kattis.com/problems/triplesevens) |

---

## North American Mid-Atlantic Region (2024)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4677](https://solved.ac/problems/archive/contest/4677)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2024%20ICPC%20South%20Central%2C%20South%20East%20and%20Mid%20Atlantic%20Regional%20%28November%2016%2C%202024%29](https://open.kattis.com/problem-sources/2024%20ICPC%20South%20Central%2C%20South%20East%20and%20Mid%20Atlantic%20Regional%20%28November%2016%2C%202024%29)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `citybike` | Citybike | [https://open.kattis.com/problems/citybike](https://open.kattis.com/problems/citybike) |
| `duelofcards` | Duel of Cards | [https://open.kattis.com/problems/duelofcards](https://open.kattis.com/problems/duelofcards) |
| `elevatedrails` | Elevatedrails | [https://open.kattis.com/problems/elevatedrails](https://open.kattis.com/problems/elevatedrails) |
| `findingkeys` | Findingkeys | [https://open.kattis.com/problems/findingkeys](https://open.kattis.com/problems/findingkeys) |
| `herbmixing` | Herb Mixing | [https://open.kattis.com/problems/herbmixing](https://open.kattis.com/problems/herbmixing) |
| `intergalacticteam` | Intergalactic Team | [https://open.kattis.com/problems/intergalacticteam](https://open.kattis.com/problems/intergalacticteam) |
| `islandmemories` | Island Memories | [https://open.kattis.com/problems/islandmemories](https://open.kattis.com/problems/islandmemories) |
| `memoriesofpassportstamps` | Memories of Passport Stamps | [https://open.kattis.com/problems/memoriesofpassportstamps](https://open.kattis.com/problems/memoriesofpassportstamps) |
| `officebuilding` | Office Building | [https://open.kattis.com/problems/officebuilding](https://open.kattis.com/problems/officebuilding) |
| `optimizedcheating` | Optimized Cheating | [https://open.kattis.com/problems/optimizedcheating](https://open.kattis.com/problems/optimizedcheating) |
| `perfectsquares` | Perfect Squares | [https://open.kattis.com/problems/perfectsquares](https://open.kattis.com/problems/perfectsquares) |
| `pianissimo` | Pianissimo | [https://open.kattis.com/problems/pianissimo](https://open.kattis.com/problems/pianissimo) |
| `trafficlights` | Traffic Lights | [https://open.kattis.com/problems/trafficlights](https://open.kattis.com/problems/trafficlights) |
| `trianglesofasquare` | Triangles of a Square | [https://open.kattis.com/problems/trianglesofasquare](https://open.kattis.com/problems/trianglesofasquare) |
| `virtualrealityplayspace` | Virtualrealityplayspace | [https://open.kattis.com/problems/vrplayspace](https://open.kattis.com/problems/vrplayspace) |
| `welcomesign` | Welcome Sign | [https://open.kattis.com/problems/welcomesign](https://open.kattis.com/problems/welcomesign) |
| `whichoneislarger` | Which One is Larger | [https://open.kattis.com/problems/whichoneislarger](https://open.kattis.com/problems/whichoneislarger) |

---

## North American Mid-Atlantic Region (2025)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4683](https://solved.ac/problems/archive/contest/4683)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2025%20ICPC%20South%20Central%2C%20South%20East%20and%20Mid%20Atlantic%20Regional%20%28November%208%2C%202025%29](https://open.kattis.com/problem-sources/2025%20ICPC%20South%20Central%2C%20South%20East%20and%20Mid%20Atlantic%20Regional%20%28November%208%2C%202025%29)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `blindbottles` | Blind Bottles | [https://open.kattis.com/problems/blindbottles](https://open.kattis.com/problems/blindbottles) |
| `breakout` | Breakout | [https://open.kattis.com/problems/breakout2](https://open.kattis.com/problems/breakout2) |
| `galaxygovernance` | Galaxygovernance | [https://open.kattis.com/problems/galaxygovernance](https://open.kattis.com/problems/galaxygovernance) |
| `gameofnines` | Game of Nines | [https://open.kattis.com/problems/gameofnines](https://open.kattis.com/problems/gameofnines) |
| `guidgenerator` | GUID Generator | [https://open.kattis.com/problems/guidgenerator](https://open.kattis.com/problems/guidgenerator) |
| `inazumacubedevice` | Inazuma Cube Device | [https://open.kattis.com/problems/inazumacubedevice](https://open.kattis.com/problems/inazumacubedevice) |
| `manhattaninterference` | Manhattaninterference | [https://open.kattis.com/problems/manhattaninterference](https://open.kattis.com/problems/manhattaninterference) |
| `meetingfreefridays` | Meetingfreefridays | [https://open.kattis.com/problems/meetingfreefridays](https://open.kattis.com/problems/meetingfreefridays) |
| `memoriesofpassportcontrol` | Memories of Passport Control | [https://open.kattis.com/problems/memoriesofpassportcontrol](https://open.kattis.com/problems/memoriesofpassportcontrol) |
| `moonlittimemachine` | Moonlit Time Machine | [https://open.kattis.com/problems/moonlittimemachine](https://open.kattis.com/problems/moonlittimemachine) |
| `muchroomformushrooms` | Much Room for Mushrooms | [https://open.kattis.com/problems/muchroomformushrooms](https://open.kattis.com/problems/muchroomformushrooms) |
| `onewayonly` | One Way Only | [https://open.kattis.com/problems/onewayonly](https://open.kattis.com/problems/onewayonly) |
| `orchardfence` | Orchardfence | [https://open.kattis.com/problems/orchardfence](https://open.kattis.com/problems/orchardfence) |
| `photoencoding` | Photo Encoding | [https://open.kattis.com/problems/photoencoding](https://open.kattis.com/problems/photoencoding) |
| `rowsofstars` | Rowsofstars | [https://open.kattis.com/problems/rowsofstars](https://open.kattis.com/problems/rowsofstars) |
| `shinjukustation` | Shinjuku Station | [https://open.kattis.com/problems/shinjukustation](https://open.kattis.com/problems/shinjukustation) |
| `snakeystring` | Snakey String | [https://open.kattis.com/problems/snakeystring](https://open.kattis.com/problems/snakeystring) |
| `swapforpalindrome` | Swap for Palindrome | [https://open.kattis.com/problems/swapforpalindrome](https://open.kattis.com/problems/swapforpalindrome) |
| `treeracing` | Treeracing | [https://open.kattis.com/problems/treeracing](https://open.kattis.com/problems/treeracing) |

---

## North America Championship (2020)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2173](https://solved.ac/problems/archive/contest/2173)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/North%20America%20Championship%202020](https://open.kattis.com/problem-sources/North%20America%20Championship%202020)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `bomas` | Bomas | [https://open.kattis.com/problems/bomas](https://open.kattis.com/problems/bomas) |

---

## North America Championship (2021)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2744](https://solved.ac/problems/archive/contest/2744)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/ICPC%20North%20America%20Championship%202021](https://open.kattis.com/problem-sources/ICPC%20North%20America%20Championship%202021)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `data-65` | Data 65 | **UNMATCHED** |
| `data-66` | Data 66 | **UNMATCHED** |
| `data-67` | Data 67 | **UNMATCHED** |
| `data-68` | Data 68 | **UNMATCHED** |
| `data-69` | Data 69 | **UNMATCHED** |
| `data-70` | Data 70 | **UNMATCHED** |
| `data-71` | Data 71 | **UNMATCHED** |
| `data-72` | Data 72 | **UNMATCHED** |
| `data-73` | Data 73 | **UNMATCHED** |
| `data-74` | Data 74 | **UNMATCHED** |
| `data-75` | Data 75 | **UNMATCHED** |
| `data-76` | Data 76 | **UNMATCHED** |
| `data-77` | Data 77 | **UNMATCHED** |

---

## North America Championship (2022)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/3126](https://solved.ac/problems/archive/contest/3126)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2022%20ICPC%20North%20America%20Championship%20Practice](https://open.kattis.com/problem-sources/2022%20ICPC%20North%20America%20Championship%20Practice)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `data-102` | Data 102 | **UNMATCHED** |
| `data-103` | Data 103 | **UNMATCHED** |
| `data-104` | Data 104 | **UNMATCHED** |
| `data-105` | Data 105 | **UNMATCHED** |
| `data-106` | Data 106 | **UNMATCHED** |
| `data-107` | Data 107 | **UNMATCHED** |
| `data-108` | Data 108 | **UNMATCHED** |
| `data-109` | Data 109 | **UNMATCHED** |
| `data-110` | Data 110 | **UNMATCHED** |
| `data-111` | Data 111 | **UNMATCHED** |
| `data-112` | Data 112 | **UNMATCHED** |
| `data-113` | Data 113 | **UNMATCHED** |
| `data-114` | Data 114 | **UNMATCHED** |

---

## North America Championship (2023)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/3594](https://solved.ac/problems/archive/contest/3594)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2023%20ICPC%20North%20America%20Championship](https://open.kattis.com/problem-sources/2023%20ICPC%20North%20America%20Championship)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `data-1` | Data 1 | **UNMATCHED** |
| `data-10` | Data 10 | **UNMATCHED** |
| `data-11` | Data 11 | **UNMATCHED** |
| `data-13` | Data 13 | **UNMATCHED** |
| `data-2` | Data 2 | **UNMATCHED** |
| `data-3` | Data 3 | **UNMATCHED** |
| `data-4` | Data 4 | **UNMATCHED** |
| `data-5` | Data 5 | **UNMATCHED** |
| `data-6` | Data 6 | **UNMATCHED** |
| `data-7` | Data 7 | **UNMATCHED** |
| `data-8` | Data 8 | **UNMATCHED** |
| `data-9` | Data 9 | **UNMATCHED** |

---

## North America Championship (2024)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4226](https://solved.ac/problems/archive/contest/4226)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2024%20ICPC%20North%20America%20Championship](https://open.kattis.com/problem-sources/2024%20ICPC%20North%20America%20Championship)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `data-49` | Data 49 | **UNMATCHED** |
| `data-50` | Data 50 | **UNMATCHED** |
| `data-51` | Data 51 | **UNMATCHED** |
| `data-52` | Data 52 | **UNMATCHED** |
| `data-53` | Data 53 | **UNMATCHED** |
| `data-54` | Data 54 | **UNMATCHED** |
| `data-55` | Data 55 | **UNMATCHED** |
| `data-56` | Data 56 | **UNMATCHED** |
| `data-57` | Data 57 | **UNMATCHED** |
| `data-58` | Data 58 | **UNMATCHED** |
| `data-59` | Data 59 | **UNMATCHED** |
| `data-60` | Data 60 | **UNMATCHED** |
| `data-61` | Data 61 | **UNMATCHED** |

---

## North America Championship (2025)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4543](https://solved.ac/problems/archive/contest/4543)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2025%20ICPC%20North%20America%20Championship](https://open.kattis.com/problem-sources/2025%20ICPC%20North%20America%20Championship)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `data-100` | Data 100 | **UNMATCHED** |
| `data-101` | Data 101 | **UNMATCHED** |
| `data-102` | Data 102 | **UNMATCHED** |
| `data-103` | Data 103 | **UNMATCHED** |
| `data-104` | Data 104 | **UNMATCHED** |
| `data-92` | Data 92 | **UNMATCHED** |
| `data-93` | Data 93 | **UNMATCHED** |
| `data-94` | Data 94 | **UNMATCHED** |
| `data-95` | Data 95 | **UNMATCHED** |
| `data-96` | Data 96 | **UNMATCHED** |
| `data-97` | Data 97 | **UNMATCHED** |
| `data-98` | Data 98 | **UNMATCHED** |
| `data-99` | Data 99 | **UNMATCHED** |

---

## North America Division Championship (2021)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2517](https://solved.ac/problems/archive/contest/2517)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2021%20ICPC%20North%20America%20Division%20Championships](https://open.kattis.com/problem-sources/2021%20ICPC%20North%20America%20Division%20Championships)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `alienmicrowave` | Alien Microwave | [https://open.kattis.com/problems/alienmicrowave](https://open.kattis.com/problems/alienmicrowave) |
| `anothersubstringqueryproblem` | Another Substring Query Problem (ASQP) | [https://open.kattis.com/problems/anothersubstringqueryproblem](https://open.kattis.com/problems/anothersubstringqueryproblem) |
| `borders` |  Consider a black and white image, where every pixel has a value | [https://open.kattis.com/problems/borders](https://open.kattis.com/problems/borders) |
| `circleoffriends` | Circle of Friends Problem Statement | [https://open.kattis.com/problems/circleoffriends](https://open.kattis.com/problems/circleoffriends) |
| `findingpolly` | Finding Polly | [https://open.kattis.com/problems/findingpolly](https://open.kattis.com/problems/findingpolly) |
| `investigatingimposters` | Investigating Imposters | [https://open.kattis.com/problems/investigatingimposters](https://open.kattis.com/problems/investigatingimposters) |
| `laptopsticker` | Laptopsticker | [https://open.kattis.com/problems/laptopsticker](https://open.kattis.com/problems/laptopsticker) |
| `longestcommonsubstring` | There are many ways to approach this problem. A simple brute force approach will work. | [https://open.kattis.com/problems/longestcommonsubstring](https://open.kattis.com/problems/longestcommonsubstring) |
| `simplecronspec` | First, we’ve got to read in a line, split it into tokens, and parse the individual tokens. | [https://open.kattis.com/problems/simplecronspec](https://open.kattis.com/problems/simplecronspec) |
| `surveillance2` | Surveillance | [https://open.kattis.com/problems/surveillance2](https://open.kattis.com/problems/surveillance2) |
| `trainline` | Train Line Solution Slides | [https://open.kattis.com/problems/trainline](https://open.kattis.com/problems/trainline) |
| `windowshopping` | Window Shopping | [https://open.kattis.com/problems/windowshopping](https://open.kattis.com/problems/windowshopping) |
| `youbethejudge` | You Be the Judge! | [https://open.kattis.com/problems/youbethejudge](https://open.kattis.com/problems/youbethejudge) |

---

## North America East Regional Contest (NA East) (2023)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2023%20North%20America%20East%20Division%20Contest](https://open.kattis.com/problem-sources/2023%20North%20America%20East%20Division%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `apivotalquestion` | A Pivotal Question | [https://open.kattis.com/problems/apivotalquestion](https://open.kattis.com/problems/apivotalquestion) |
| `basehilo` | Base Hi-Lo Game | **UNMATCHED** |
| `broadband` | B Road Band | [https://open.kattis.com/problems/broadband](https://open.kattis.com/problems/broadband) |
| `coltype` | Prof. Fumblemore and the Collatz Conjecture | [https://open.kattis.com/problems/coltype](https://open.kattis.com/problems/coltype) |
| `convexhullextension` | Convex Hull Extension | [https://open.kattis.com/problems/convexhullextension](https://open.kattis.com/problems/convexhullextension) |
| `cornhusker` | Cornhusker | [https://open.kattis.com/problems/cornhusker](https://open.kattis.com/problems/cornhusker) |
| `doubleup` | Double Up | [https://open.kattis.com/problems/doubleup](https://open.kattis.com/problems/doubleup) |
| `forestforthetrees` | Forest for the Trees | [https://open.kattis.com/problems/forestforthetrees2](https://open.kattis.com/problems/forestforthetrees2) |
| `impartialstrings` | Impartial Strings | [https://open.kattis.com/problems/impartialstrings](https://open.kattis.com/problems/impartialstrings) |
| `isbnconversion` | ISBN Conversion | [https://open.kattis.com/problems/isbnconversion](https://open.kattis.com/problems/isbnconversion) |
| `morsepal` | Make Your Own Morse Code Palindrome | **UNMATCHED** |
| `pearls` | Pearls | [https://open.kattis.com/problems/pearls](https://open.kattis.com/problems/pearls) |
| `plusminusfoursq` | Plus Minus Four Squares | **UNMATCHED** |
| `splitdecisions` | Split Decisions | [https://open.kattis.com/problems/splitdecisions](https://open.kattis.com/problems/splitdecisions) |
| `walkinthewoods` | Walkinthewoods | [https://open.kattis.com/problems/walkinthewoods](https://open.kattis.com/problems/walkinthewoods) |

---

## North America East Regional Contest (NA East) (2024)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2024%20North%20America%20East%20Division%20Contest](https://open.kattis.com/problem-sources/2024%20North%20America%20East%20Division%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `astackofgold` | A Stack of Gold | [https://open.kattis.com/problems/astackofgold](https://open.kattis.com/problems/astackofgold) |
| `averagesubstringvalue` | Average Substring Value | [https://open.kattis.com/problems/averagesubstringvalue](https://open.kattis.com/problems/averagesubstringvalue) |
| `balancingart` | Balancing Art | [https://open.kattis.com/problems/balancingart](https://open.kattis.com/problems/balancingart) |
| `brownianbears` | Brownian Bears | [https://open.kattis.com/problems/brownianbears](https://open.kattis.com/problems/brownianbears) |
| `fencesmakegoodneighbors` | Fences Make Good Neighbors | [https://open.kattis.com/problems/fencesmakegoodneighbors](https://open.kattis.com/problems/fencesmakegoodneighbors) |
| `leapfrogencryption` | Leapfrog Encryption | [https://open.kattis.com/problems/leapfrogencryption](https://open.kattis.com/problems/leapfrogencryption) |
| `letterballoons` | Letter Balloons | **UNMATCHED** |
| `marchingorders` | Marching Orders | [https://open.kattis.com/problems/marchingorders](https://open.kattis.com/problems/marchingorders) |
| `ooohisee` | Oooh I See | [https://open.kattis.com/problems/ooohisee](https://open.kattis.com/problems/ooohisee) |
| `pascalmeetsboole` | Pascal Meets Boole | [https://open.kattis.com/problems/pascalmeetsboole](https://open.kattis.com/problems/pascalmeetsboole) |
| `ponylessexpress` | Pony-less Express | [https://open.kattis.com/problems/ponylessexpress](https://open.kattis.com/problems/ponylessexpress) |
| `repetitiveroutes` | Repetitive Routes | [https://open.kattis.com/problems/repetitiveroutes](https://open.kattis.com/problems/repetitiveroutes) |
| `smartpasswordvalidation` | Smart Password Validation | [https://open.kattis.com/problems/smartpasswordvalidation](https://open.kattis.com/problems/smartpasswordvalidation) |

---

## North America East Regional Contest (NA East) (2025)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2025%20North%20America%20East%20Division%20Contest](https://open.kattis.com/problem-sources/2025%20North%20America%20East%20Division%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A-Alittleleftoverpizza` | A - A Little Leftover Pizza | [https://open.kattis.com/problems/alittleleftoverpizza](https://open.kattis.com/problems/alittleleftoverpizza) |
| `B-Andor` | B - Andor Strikes Again | [https://open.kattis.com/problems/andor](https://open.kattis.com/problems/andor) |
| `C-Arod` | C - AROD | [https://open.kattis.com/problems/arod](https://open.kattis.com/problems/arod) |
| `D-Butiwanttowin` | D - But I Want to Win | [https://open.kattis.com/problems/butiwanttowin](https://open.kattis.com/problems/butiwanttowin) |
| `E-Chesssolitaire` | E - Chess Solitaire | [https://open.kattis.com/problems/chesssolitaire](https://open.kattis.com/problems/chesssolitaire) |
| `F-Fractionalsequence` | F - Fractional Sequence | [https://open.kattis.com/problems/fractionalsequence](https://open.kattis.com/problems/fractionalsequence) |
| `G-Howmanyballs` | G - How Many Balls? | [https://open.kattis.com/problems/howmanyballs](https://open.kattis.com/problems/howmanyballs) |
| `H-Moveitslowpoke` | H - Move It, Slowpoke! | [https://open.kattis.com/problems/moveitslowpoke](https://open.kattis.com/problems/moveitslowpoke) |
| `I-Numberpyramid` | I - Number Pyramid | [https://open.kattis.com/problems/numberpyramid](https://open.kattis.com/problems/numberpyramid) |
| `J-Polyominotiling` | J - Polyomino Tiling | [https://open.kattis.com/problems/polyominotiling](https://open.kattis.com/problems/polyominotiling) |
| `K-Triptych` | K - Triptych | [https://open.kattis.com/problems/triptych](https://open.kattis.com/problems/triptych) |
| `L-Valleygulls` | L - Valley Gulls | [https://open.kattis.com/problems/valleygulls](https://open.kattis.com/problems/valleygulls) |

---

## North American Invitational Programming Contest (2012)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/428](https://solved.ac/problems/archive/contest/428)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2012%20University%20of%20Chicago%20Invitational%20Programming%20Contest](https://open.kattis.com/problem-sources/2012%20University%20of%20Chicago%20Invitational%20Programming%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `cosmo` | Cosmo | [https://open.kattis.com/problems/cosmocraft](https://open.kattis.com/problems/cosmocraft) |
| `covered` | Covered | [https://open.kattis.com/problems/coveredwalkway](https://open.kattis.com/problems/coveredwalkway) |
| `doubledealing` | Doubledealing | [https://open.kattis.com/problems/double](https://open.kattis.com/problems/double) |
| `estimate` | Estimate | [https://open.kattis.com/problems/estimation](https://open.kattis.com/problems/estimation) |
| `juggler` | Juggler | [https://open.kattis.com/problems/juggler](https://open.kattis.com/problems/juggler) |
| `redblue` | Redblue | **UNMATCHED** |
| `redgem` | Redgem | [https://open.kattis.com/problems/redgem](https://open.kattis.com/problems/redgem) |
| `science` | Science | [https://open.kattis.com/problems/science](https://open.kattis.com/problems/science) |
| `theend` | Theend | **UNMATCHED** |
| `worm` | Worm | [https://open.kattis.com/problems/worminapple](https://open.kattis.com/problems/worminapple) |

---

## North American Invitational Programming Contest (2013)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/854](https://solved.ac/problems/archive/contest/854)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2013%20University%20of%20Chicago%20Invitational%20Programming%20Contest](https://open.kattis.com/problem-sources/2013%20University%20of%20Chicago%20Invitational%20Programming%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `bridges` | Bridges | **UNMATCHED** |
| `cans` | Cans | **UNMATCHED** |
| `floodingfields` | Floodingfields | [https://open.kattis.com/problems/floodingfields](https://open.kattis.com/problems/floodingfields) |
| `goatropes` | Goatropes | [https://open.kattis.com/problems/goatropes](https://open.kattis.com/problems/goatropes) |
| `jobpostings` | Jobpostings | [https://open.kattis.com/problems/jobpostings](https://open.kattis.com/problems/jobpostings) |
| `overlappingmaps` | Overlappingmaps | [https://open.kattis.com/problems/overlappingmaps](https://open.kattis.com/problems/overlappingmaps) |
| `realestate` | Realestate | **UNMATCHED** |
| `satisfaction` | Satisfaction | [https://open.kattis.com/problems/satisfaction](https://open.kattis.com/problems/satisfaction) |
| `threedprinter` | Threedprinter | [https://open.kattis.com/problems/threedprinter](https://open.kattis.com/problems/threedprinter) |
| `trading` | Trading | **UNMATCHED** |
| `uniform` | Uniform | [https://open.kattis.com/problems/uniformsubtrees](https://open.kattis.com/problems/uniformsubtrees) |

---

## North American Invitational Programming Contest (2014)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1282](https://solved.ac/problems/archive/contest/1282)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/North%20American%20Invitational%20Programming%20Contest%20%28NAIPC%29%202014](https://open.kattis.com/problem-sources/North%20American%20Invitational%20Programming%20Contest%20%28NAIPC%29%202014)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `banjo` | Banjo | [https://open.kattis.com/problems/banjo](https://open.kattis.com/problems/banjo) |
| `cheats` | Cheats | [https://open.kattis.com/problems/cheats](https://open.kattis.com/problems/cheats) |
| `diplomacy` | Diplomacy | [https://open.kattis.com/problems/diplomacy](https://open.kattis.com/problems/diplomacy) |
| `estate` | Estate | [https://open.kattis.com/problems/estate](https://open.kattis.com/problems/estate) |
| `fantastic` | Fantastic | [https://open.kattis.com/problems/fantasticproblem](https://open.kattis.com/problems/fantasticproblem) |
| `gcd` | Gcd | **UNMATCHED** |
| `gold` | Repeating Goldbachs | **UNMATCHED** |
| `mario` | Mario | **UNMATCHED** |
| `reconnaissance` | Reconnaissance | [https://open.kattis.com/problems/reconnaissance](https://open.kattis.com/problems/reconnaissance) |
| `twoknights` | Twoknights | [https://open.kattis.com/problems/twoknights](https://open.kattis.com/problems/twoknights) |

---

## North American Invitational Programming Contest (2015)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1387](https://solved.ac/problems/archive/contest/1387)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/North%20American%20Invitational%20Programming%20Contest%20%28NAIPC%29%202015](https://open.kattis.com/problem-sources/North%20American%20Invitational%20Programming%20Contest%20%28NAIPC%29%202015)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `areaofeffect` | Area of Effect | [https://open.kattis.com/problems/areaofeffect](https://open.kattis.com/problems/areaofeffect) |
| `canyon` | Canyon | [https://open.kattis.com/problems/canyon](https://open.kattis.com/problems/canyon) |
| `checkerboard` | Checkerboard | [https://open.kattis.com/problems/checkerboard](https://open.kattis.com/problems/checkerboard) |
| `extensiveor` | Extensive Or | [https://open.kattis.com/problems/extensiveor](https://open.kattis.com/problems/extensiveor) |
| `primal` | Primal | [https://open.kattis.com/problems/primal](https://open.kattis.com/problems/primal) |
| `sandart` | Sand Art | [https://open.kattis.com/problems/sandart](https://open.kattis.com/problems/sandart) |
| `stretching` | Stretching | [https://open.kattis.com/problems/stretching](https://open.kattis.com/problems/stretching) |
| `vending` | Vending | [https://open.kattis.com/problems/vending](https://open.kattis.com/problems/vending) |
| `zamboni` | Zamboni | [https://open.kattis.com/problems/zamboni](https://open.kattis.com/problems/zamboni) |
| `zigzag` | Zigzag | [https://open.kattis.com/problems/zigzag](https://open.kattis.com/problems/zigzag) |

---

## North American Invitational Programming Contest (2016)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1502](https://solved.ac/problems/archive/contest/1502)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/North%20American%20Invitational%20Programming%20Contest%20%28NAIPC%29%202016](https://open.kattis.com/problem-sources/North%20American%20Invitational%20Programming%20Contest%20%28NAIPC%29%202016)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `antiques` | Antiques | [https://open.kattis.com/problems/antiques](https://open.kattis.com/problems/antiques) |
| `bracketnotation` | Bracketnotation | [https://open.kattis.com/problems/bracketnotation](https://open.kattis.com/problems/bracketnotation) |
| `greetings` | Greetings! | [https://open.kattis.com/problems/greetings](https://open.kattis.com/problems/greetings) |
| `kinversions` | K-Inversions | [https://open.kattis.com/problems/kinversions](https://open.kattis.com/problems/kinversions) |
| `programmingteam` | Programming Team | [https://open.kattis.com/problems/programmingteam](https://open.kattis.com/problems/programmingteam) |
| `scenes` | Scenes | [https://open.kattis.com/problems/scenes](https://open.kattis.com/problems/scenes) |
| `symmetry` | Symmetry | [https://open.kattis.com/problems/symmetry](https://open.kattis.com/problems/symmetry) |
| `thief` | Thief | [https://open.kattis.com/problems/thief](https://open.kattis.com/problems/thief) |
| `tourists` | Tourists | [https://open.kattis.com/problems/tourists](https://open.kattis.com/problems/tourists) |
| `whiteboard` | Whiteboard | [https://open.kattis.com/problems/whiteboard](https://open.kattis.com/problems/whiteboard) |
| `yatp` | YATP | [https://open.kattis.com/problems/yatp](https://open.kattis.com/problems/yatp) |

---

## North American Invitational Programming Contest (2017)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1733](https://solved.ac/problems/archive/contest/1733)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/North%20American%20Invitational%20Programming%20Contest%20%28NAIPC%29%202017](https://open.kattis.com/problem-sources/North%20American%20Invitational%20Programming%20Contest%20%28NAIPC%29%202017)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `a` | Pieces of Parentheses | [https://open.kattis.com/problems/piecesofparentheses](https://open.kattis.com/problems/piecesofparentheses) |
| `applemarket` | Apple Market | [https://open.kattis.com/problems/applemarket](https://open.kattis.com/problems/applemarket) |
| `b` | Stars in a Can | [https://open.kattis.com/problems/starsinacan](https://open.kattis.com/problems/starsinacan) |
| `blazingnewtrails` | Blazing New Trails | [https://open.kattis.com/problems/blazingnewtrails](https://open.kattis.com/problems/blazingnewtrails) |
| `c` | Stretching Streamers | [https://open.kattis.com/problems/stretchingstreamers](https://open.kattis.com/problems/stretchingstreamers) |
| `d` | Heaps from Trees | [https://open.kattis.com/problems/heapstrees](https://open.kattis.com/problems/heapstrees) |
| `e` | Blazing New Trails | [https://open.kattis.com/problems/blazingnewtrails](https://open.kattis.com/problems/blazingnewtrails) |
| `f` | Incremental Double Free 12 | [https://open.kattis.com/problems/idf](https://open.kattis.com/problems/idf) |
| `g` | Apple Market | [https://open.kattis.com/problems/applemarket](https://open.kattis.com/problems/applemarket) |
| `h` | Maximum Color Clique 16 | [https://open.kattis.com/problems/maxcolorclique](https://open.kattis.com/problems/maxcolorclique) |
| `heapstrees` | Heapstrees | [https://open.kattis.com/problems/heapstrees](https://open.kattis.com/problems/heapstrees) |
| `i` | Ski Resort | [https://open.kattis.com/problems/skiresort](https://open.kattis.com/problems/skiresort) |
| `idf` | Idf | [https://open.kattis.com/problems/idf](https://open.kattis.com/problems/idf) |
| `j` | Yin and Yang Stones | [https://open.kattis.com/problems/yinyangstones](https://open.kattis.com/problems/yinyangstones) |
| `k` | Unbalanced Parentheses 24 | [https://open.kattis.com/problems/unbalancedparentheses](https://open.kattis.com/problems/unbalancedparentheses) |
| `maxcolorclique` | Maxcolorclique | [https://open.kattis.com/problems/maxcolorclique](https://open.kattis.com/problems/maxcolorclique) |
| `piecesofparentheses` | Pieces of Parentheses | [https://open.kattis.com/problems/piecesofparentheses](https://open.kattis.com/problems/piecesofparentheses) |
| `skiresort` | Ski Resort | [https://open.kattis.com/problems/skiresort](https://open.kattis.com/problems/skiresort) |
| `starsinacan` | Stars in a Can | [https://open.kattis.com/problems/starsinacan](https://open.kattis.com/problems/starsinacan) |
| `stretchingstreamers` | Stretching Streamers | [https://open.kattis.com/problems/stretchingstreamers](https://open.kattis.com/problems/stretchingstreamers) |
| `unbalancedparentheses` | Unbalancedparentheses | [https://open.kattis.com/problems/unbalancedparentheses](https://open.kattis.com/problems/unbalancedparentheses) |
| `yinyangstones` | Yinyangstones | [https://open.kattis.com/problems/yinyangstones](https://open.kattis.com/problems/yinyangstones) |

---

## North American Invitational Programming Contest (2019)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2003](https://solved.ac/problems/archive/contest/2003)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/North%20American%20Invitational%20Programming%20Contest%20%28NAIPC%29%202019](https://open.kattis.com/problem-sources/North%20American%20Invitational%20Programming%20Contest%20%28NAIPC%29%202019)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `a` | Piece of Cake | [https://open.kattis.com/problems/pieceofcake](https://open.kattis.com/problems/pieceofcake) |
| `b` | Busy Board | [https://open.kattis.com/problems/busyboard](https://open.kattis.com/problems/busyboard) |
| `c` | Cost of Living | [https://open.kattis.com/problems/costofliving](https://open.kattis.com/problems/costofliving) |
| `d` | It’s a Mod, Mod, Mod, Mod World | [https://open.kattis.com/problems/itsamodmodmodmodworld](https://open.kattis.com/problems/itsamodmodmodmodworld) |
| `e` | Monotony | [https://open.kattis.com/problems/monotony](https://open.kattis.com/problems/monotony) |
| `f` | Heaps of Fun | [https://open.kattis.com/problems/heapsoffun](https://open.kattis.com/problems/heapsoffun) |
| `g` | Intersecting Rectangles | [https://open.kattis.com/problems/intersectingrectangles](https://open.kattis.com/problems/intersectingrectangles) |
| `h` | Rocket Powered Hovercraft | [https://open.kattis.com/problems/rocketpoweredhovercraft](https://open.kattis.com/problems/rocketpoweredhovercraft) |
| `i` | Cutting Strings | [https://open.kattis.com/problems/cuttingstrings](https://open.kattis.com/problems/cuttingstrings) |
| `j` | Subsequences in Substrings | [https://open.kattis.com/problems/subsequencesinsubstrings](https://open.kattis.com/problems/subsequencesinsubstrings) |
| `k` | Knight of the Tarot Cards | [https://open.kattis.com/problems/knightofthetarotcards](https://open.kattis.com/problems/knightofthetarotcards) |
| `l` | Planes, Trains, but not Automobiles | [https://open.kattis.com/problems/planestrainsbutnotautomobiles](https://open.kattis.com/problems/planestrainsbutnotautomobiles) |
| `m` | XOR Sequences | [https://open.kattis.com/problems/xorsequences](https://open.kattis.com/problems/xorsequences) |

---

## Northeast North America Regional Contest (2023)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2023%20North%20America%20East%20Division%20Contest](https://open.kattis.com/problem-sources/2023%20North%20America%20East%20Division%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `apivotalquestion` | A Pivotal Question | [https://open.kattis.com/problems/apivotalquestion](https://open.kattis.com/problems/apivotalquestion) |
| `basehilo` | Base Hi-Lo Game | **UNMATCHED** |
| `broadband` | B Road Band | [https://open.kattis.com/problems/broadband](https://open.kattis.com/problems/broadband) |
| `coltype` | Prof. Fumblemore and the Collatz Conjecture | [https://open.kattis.com/problems/coltype](https://open.kattis.com/problems/coltype) |
| `convexhullextension` | Convex Hull Extension | [https://open.kattis.com/problems/convexhullextension](https://open.kattis.com/problems/convexhullextension) |
| `cornhusker` | Cornhusker | [https://open.kattis.com/problems/cornhusker](https://open.kattis.com/problems/cornhusker) |
| `doubleup` | Double Up | [https://open.kattis.com/problems/doubleup](https://open.kattis.com/problems/doubleup) |
| `forestforthetrees` | Forest for the Trees | [https://open.kattis.com/problems/forestforthetrees2](https://open.kattis.com/problems/forestforthetrees2) |
| `impartialstrings` | Impartial Strings | [https://open.kattis.com/problems/impartialstrings](https://open.kattis.com/problems/impartialstrings) |
| `isbnconversion` | ISBN Conversion | [https://open.kattis.com/problems/isbnconversion](https://open.kattis.com/problems/isbnconversion) |
| `morsepal` | Make Your Own Morse Code Palindrome | **UNMATCHED** |
| `pearls` | Pearls | [https://open.kattis.com/problems/pearls](https://open.kattis.com/problems/pearls) |
| `plusminusfoursq` | Plus Minus Four Squares | **UNMATCHED** |
| `splitdecisions` | Split Decisions | [https://open.kattis.com/problems/splitdecisions](https://open.kattis.com/problems/splitdecisions) |
| `walkinthewoods` | Walkinthewoods | [https://open.kattis.com/problems/walkinthewoods](https://open.kattis.com/problems/walkinthewoods) |

---

## Northeast North America Regional Contest (2024)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4343](https://solved.ac/problems/archive/contest/4343)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2024%20North%20America%20East%20Division%20Contest](https://open.kattis.com/problem-sources/2024%20North%20America%20East%20Division%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `astackofgold` | A Stack of Gold | [https://open.kattis.com/problems/astackofgold](https://open.kattis.com/problems/astackofgold) |
| `averagesubstringvalue` | Average Substring Value | [https://open.kattis.com/problems/averagesubstringvalue](https://open.kattis.com/problems/averagesubstringvalue) |
| `balancingart` | Balancing Art | [https://open.kattis.com/problems/balancingart](https://open.kattis.com/problems/balancingart) |
| `brownianbears` | Brownian Bears | [https://open.kattis.com/problems/brownianbears](https://open.kattis.com/problems/brownianbears) |
| `fencesmakegoodneighbors` | Fences Make Good Neighbors | [https://open.kattis.com/problems/fencesmakegoodneighbors](https://open.kattis.com/problems/fencesmakegoodneighbors) |
| `leapfrogencryption` | Leapfrog Encryption | [https://open.kattis.com/problems/leapfrogencryption](https://open.kattis.com/problems/leapfrogencryption) |
| `letterballoons` | Letter Balloons | **UNMATCHED** |
| `marchingorders` | Marching Orders | [https://open.kattis.com/problems/marchingorders](https://open.kattis.com/problems/marchingorders) |
| `ooohisee` | Oooh I See | [https://open.kattis.com/problems/ooohisee](https://open.kattis.com/problems/ooohisee) |
| `pascalmeetsboole` | Pascal Meets Boole | [https://open.kattis.com/problems/pascalmeetsboole](https://open.kattis.com/problems/pascalmeetsboole) |
| `ponylessexpress` | Pony-less Express | [https://open.kattis.com/problems/ponylessexpress](https://open.kattis.com/problems/ponylessexpress) |
| `repetitiveroutes` | Repetitive Routes | [https://open.kattis.com/problems/repetitiveroutes](https://open.kattis.com/problems/repetitiveroutes) |
| `smartpasswordvalidation` | Smart Password Validation | [https://open.kattis.com/problems/smartpasswordvalidation](https://open.kattis.com/problems/smartpasswordvalidation) |

---

## Northeast North America Regional Contest (2025)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2025%20North%20America%20East%20Division%20Contest](https://open.kattis.com/problem-sources/2025%20North%20America%20East%20Division%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A-Alittleleftoverpizza` | A - A Little Leftover Pizza | [https://open.kattis.com/problems/alittleleftoverpizza](https://open.kattis.com/problems/alittleleftoverpizza) |
| `B-Andor` | B - Andor Strikes Again | [https://open.kattis.com/problems/andor](https://open.kattis.com/problems/andor) |
| `C-Arod` | C - AROD | [https://open.kattis.com/problems/arod](https://open.kattis.com/problems/arod) |
| `D-Butiwanttowin` | D - But I Want to Win | [https://open.kattis.com/problems/butiwanttowin](https://open.kattis.com/problems/butiwanttowin) |
| `E-Chesssolitaire` | E - Chess Solitaire | [https://open.kattis.com/problems/chesssolitaire](https://open.kattis.com/problems/chesssolitaire) |
| `F-Fractionalsequence` | F - Fractional Sequence | [https://open.kattis.com/problems/fractionalsequence](https://open.kattis.com/problems/fractionalsequence) |
| `G-Howmanyballs` | G - How Many Balls? | [https://open.kattis.com/problems/howmanyballs](https://open.kattis.com/problems/howmanyballs) |
| `H-Moveitslowpoke` | H - Move It, Slowpoke! | [https://open.kattis.com/problems/moveitslowpoke](https://open.kattis.com/problems/moveitslowpoke) |
| `I-Numberpyramid` | I - Number Pyramid | [https://open.kattis.com/problems/numberpyramid](https://open.kattis.com/problems/numberpyramid) |
| `J-Polyominotiling` | J - Polyomino Tiling | [https://open.kattis.com/problems/polyominotiling](https://open.kattis.com/problems/polyominotiling) |
| `K-Triptych` | K - Triptych | [https://open.kattis.com/problems/triptych](https://open.kattis.com/problems/triptych) |
| `L-Valleygulls` | L - Valley Gulls | [https://open.kattis.com/problems/valleygulls](https://open.kattis.com/problems/valleygulls) |

---

## North America Qualifier (2012)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1309](https://solved.ac/problems/archive/contest/1309)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/ICPC%202012%20North%20American%20Qualifier](https://open.kattis.com/problem-sources/ICPC%202012%20North%20American%20Qualifier)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `choosingnumbers` | Choosingnumbers | [https://open.kattis.com/problems/choosingnumbers](https://open.kattis.com/problems/choosingnumbers) |
| `curvyblocks` | Curvyblocks | [https://open.kattis.com/problems/curvyblocks](https://open.kattis.com/problems/curvyblocks) |
| `hittingtargets` | Hittingtargets | [https://open.kattis.com/problems/hittingtargets](https://open.kattis.com/problems/hittingtargets) |
| `loopytransit` | Loopytransit | [https://open.kattis.com/problems/loopytransit](https://open.kattis.com/problems/loopytransit) |
| `mazemovement` | Mazemovement | [https://open.kattis.com/problems/mazemovement](https://open.kattis.com/problems/mazemovement) |
| `multitouch` | Multitouch | [https://open.kattis.com/problems/multitouch](https://open.kattis.com/problems/multitouch) |
| `outofcontext` | Outofcontext | [https://open.kattis.com/problems/outofcontext](https://open.kattis.com/problems/outofcontext) |
| `quiteaproblem` | Quiteaproblem | [https://open.kattis.com/problems/quiteaproblem](https://open.kattis.com/problems/quiteaproblem) |
| `raggedright` | Raggedright | [https://open.kattis.com/problems/raggedright](https://open.kattis.com/problems/raggedright) |
| `texassummers` | Texassummers | [https://open.kattis.com/problems/texassummers](https://open.kattis.com/problems/texassummers) |
| `unicycles` | Unicycles | [https://open.kattis.com/problems/unicycles](https://open.kattis.com/problems/unicycles) |

---

## North America Qualifier (2013)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1308](https://solved.ac/problems/archive/contest/1308)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2013%20ACM-ICPC%20North%20American%20Qualifier](https://open.kattis.com/problem-sources/2013%20ACM-ICPC%20North%20American%20Qualifier)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `4thought` | 4Thought | [https://open.kattis.com/problems/4thought](https://open.kattis.com/problems/4thought) |
| `biggest` | Biggest | [https://open.kattis.com/problems/biggest](https://open.kattis.com/problems/biggest) |
| `erraticants` | Erraticants | [https://open.kattis.com/problems/erraticants](https://open.kattis.com/problems/erraticants) |
| `evenup` | Evenup | [https://open.kattis.com/problems/evenup](https://open.kattis.com/problems/evenup) |
| `goldbach` | Goldbach | [https://open.kattis.com/problems/goldbach2](https://open.kattis.com/problems/goldbach2) |
| `island` | Island | [https://open.kattis.com/problems/island](https://open.kattis.com/problems/island) |
| `oddities` | Oddities | [https://open.kattis.com/problems/oddities](https://open.kattis.com/problems/oddities) |
| `plot` | Plot | [https://open.kattis.com/problems/plot](https://open.kattis.com/problems/plot) |
| `shotcube` | Shotcube | [https://open.kattis.com/problems/shotcube](https://open.kattis.com/problems/shotcube) |
| `ternarianweights` | Ternarianweights | [https://open.kattis.com/problems/ternarianweights](https://open.kattis.com/problems/ternarianweights) |
| `walkway` | Walkway | [https://open.kattis.com/problems/walkway](https://open.kattis.com/problems/walkway) |

---

## North America Qualifier (2014)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1307](https://solved.ac/problems/archive/contest/1307)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2014%20ICPC%20North%20America%20Qualifier](https://open.kattis.com/problem-sources/2014%20ICPC%20North%20America%20Qualifier)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `8queens` | 8Queens | [https://open.kattis.com/problems/8queens](https://open.kattis.com/problems/8queens) |
| `colorwalk` | Color Walk | [https://open.kattis.com/problems/colorwalk](https://open.kattis.com/problems/colorwalk) |
| `flexible` | Flexible | [https://open.kattis.com/problems/flexible](https://open.kattis.com/problems/flexible) |
| `flipfive` | Flip Five | [https://open.kattis.com/problems/flipfive](https://open.kattis.com/problems/flipfive) |
| `humancannonball` | Humancannonball | [https://open.kattis.com/problems/humancannonball](https://open.kattis.com/problems/humancannonball) |
| `mixedfractions` | Mixed Fractions | [https://open.kattis.com/problems/mixedfractions](https://open.kattis.com/problems/mixedfractions) |
| `mosquitoes` | Mosquitoes | [https://open.kattis.com/problems/mosquitoes](https://open.kattis.com/problems/mosquitoes) |
| `narrowartgallery` | Narrow Art Gallery | [https://open.kattis.com/problems/narrowartgallery](https://open.kattis.com/problems/narrowartgallery) |
| `tractor` | Tractor | [https://open.kattis.com/problems/tractor](https://open.kattis.com/problems/tractor) |
| `units` | Units | [https://open.kattis.com/problems/units](https://open.kattis.com/problems/units) |
| `yikes` | Yikes | [https://open.kattis.com/problems/yikes](https://open.kattis.com/problems/yikes) |

---

## North America Qualifier (2015)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1372](https://solved.ac/problems/archive/contest/1372)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2015%20ICPC%20North%20American%20Qualifier%20Contest](https://open.kattis.com/problem-sources/2015%20ICPC%20North%20American%20Qualifier%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `allaboutthatbase` | All about that base | [https://open.kattis.com/problems/allaboutthatbase](https://open.kattis.com/problems/allaboutthatbase) |
| `bobby` | Bobby | [https://open.kattis.com/problems/bobby](https://open.kattis.com/problems/bobby) |
| `cantinaofbabel` | Cantina of Babel | [https://open.kattis.com/problems/cantinaofbabel](https://open.kattis.com/problems/cantinaofbabel) |
| `countcircuits` | Countcircuits | [https://open.kattis.com/problems/countcircuits](https://open.kattis.com/problems/countcircuits) |
| `cuttingbrownies` | Cutting Brownies | [https://open.kattis.com/problems/cuttingbrownies](https://open.kattis.com/problems/cuttingbrownies) |
| `quickbrownfox` | Quick Brown Fox | [https://open.kattis.com/problems/quickbrownfox](https://open.kattis.com/problems/quickbrownfox) |
| `safepassage` | Safe Passage | [https://open.kattis.com/problems/safepassage](https://open.kattis.com/problems/safepassage) |
| `secretmessage` | Secret Message | [https://open.kattis.com/problems/secretmessage](https://open.kattis.com/problems/secretmessage) |
| `simonsays` | Simon Says | [https://open.kattis.com/problems/simonsays](https://open.kattis.com/problems/simonsays) |
| `torn2pieces` | Torn2Pieces | [https://open.kattis.com/problems/torn2pieces](https://open.kattis.com/problems/torn2pieces) |
| `undetected` | UnDetected | [https://open.kattis.com/problems/undetected](https://open.kattis.com/problems/undetected) |

---

## North America Qualifier (2016)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1523](https://solved.ac/problems/archive/contest/1523)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2016%20ICPC%20North%20American%20Qualifier%20Contest](https://open.kattis.com/problem-sources/2016%20ICPC%20North%20American%20Qualifier%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `anewalphabet` | A New Alphabet | [https://open.kattis.com/problems/anewalphabet](https://open.kattis.com/problems/anewalphabet) |
| `arcade` | Arcade! | [https://open.kattis.com/problems/arcade](https://open.kattis.com/problems/arcade) |
| `bigtruck` | Big Truck | [https://open.kattis.com/problems/bigtruck](https://open.kattis.com/problems/bigtruck) |
| `brackets` | Brackets | [https://open.kattis.com/problems/brackets](https://open.kattis.com/problems/brackets) |
| `dotsboxes` | Dotsboxes | [https://open.kattis.com/problems/dotsboxes](https://open.kattis.com/problems/dotsboxes) |
| `freedesserts` | Free Desserts | [https://open.kattis.com/problems/freedesserts](https://open.kattis.com/problems/freedesserts) |
| `inversefactorial` | Inverse Factorial | [https://open.kattis.com/problems/inversefactorial](https://open.kattis.com/problems/inversefactorial) |
| `ninepacks` | Nine Packs | [https://open.kattis.com/problems/ninepacks](https://open.kattis.com/problems/ninepacks) |
| `primonimo` | Primonimo | [https://open.kattis.com/problems/primonimo](https://open.kattis.com/problems/primonimo) |
| `quickestimate` | Quickestimate | [https://open.kattis.com/problems/quickestimate](https://open.kattis.com/problems/quickestimate) |
| `robotopia` | Robotopia | [https://open.kattis.com/problems/robotopia](https://open.kattis.com/problems/robotopia) |
| `unusualdarts` | Unusual Darts | [https://open.kattis.com/problems/unusualdarts](https://open.kattis.com/problems/unusualdarts) |

---

## North America Qualifier (2017)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1827](https://solved.ac/problems/archive/contest/1827)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2017%20ICPC%20North%20American%20Qualifier%20Contest](https://open.kattis.com/problem-sources/2017%20ICPC%20North%20American%20Qualifier%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `birthdaycake` | Birthday Cake | [https://open.kattis.com/problems/birthdaycake](https://open.kattis.com/problems/birthdaycake) |
| `bumped` | Bumped! | [https://open.kattis.com/problems/bumped](https://open.kattis.com/problems/bumped) |
| `canonical` | Canonical | [https://open.kattis.com/problems/canonical](https://open.kattis.com/problems/canonical) |
| `catandmice` | Cat and Mice | [https://open.kattis.com/problems/catandmice](https://open.kattis.com/problems/catandmice) |
| `companypicnic` | Company Picnic | [https://open.kattis.com/problems/companypicnic](https://open.kattis.com/problems/companypicnic) |
| `glitchbot` | GlitchBot | [https://open.kattis.com/problems/glitchbot](https://open.kattis.com/problems/glitchbot) |
| `greetingcard` | Greeting Card | [https://open.kattis.com/problems/greetingcard](https://open.kattis.com/problems/greetingcard) |
| `imperfectgps` | Imperfect GPS | [https://open.kattis.com/problems/imperfectgps](https://open.kattis.com/problems/imperfectgps) |
| `oddgnome` | Odd Gnome | [https://open.kattis.com/problems/oddgnome](https://open.kattis.com/problems/oddgnome) |
| `progressivescramble` | Progressive Scramble | [https://open.kattis.com/problems/progressivescramble](https://open.kattis.com/problems/progressivescramble) |
| `spaceprobe` | Space Probe | [https://open.kattis.com/problems/spaceprobe](https://open.kattis.com/problems/spaceprobe) |
| `suspensionbridges` | Suspension Bridges | [https://open.kattis.com/problems/suspensionbridges](https://open.kattis.com/problems/suspensionbridges) |
| `umbraldecoding` | Umbral Decoding | [https://open.kattis.com/problems/umbraldecoding](https://open.kattis.com/problems/umbraldecoding) |

---

## North America Qualifier (2018)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1969](https://solved.ac/problems/archive/contest/1969)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2018%20ICPC%20North%20American%20Qualifier%20Contest](https://open.kattis.com/problem-sources/2018%20ICPC%20North%20American%20Qualifier%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `bingoties` | Bingo Ties | [https://open.kattis.com/problems/bingoties](https://open.kattis.com/problems/bingoties) |
| `dasblinkenlights` | Das Blinkenlights | [https://open.kattis.com/problems/dasblinkenlights](https://open.kattis.com/problems/dasblinkenlights) |
| `ebonyandivory` | Ebony and Ivory | [https://open.kattis.com/problems/ebonyandivory](https://open.kattis.com/problems/ebonyandivory) |
| `froggie` | Froggie | [https://open.kattis.com/problems/froggie](https://open.kattis.com/problems/froggie) |
| `fruitslicer` | Fruit Slicer | [https://open.kattis.com/problems/fruitslicer](https://open.kattis.com/problems/fruitslicer) |
| `lcmtree` | LCM Tree | [https://open.kattis.com/problems/lcmtree](https://open.kattis.com/problems/lcmtree) |
| `leftandright` | Left and Right | [https://open.kattis.com/problems/leftandright](https://open.kattis.com/problems/leftandright) |
| `longestlife` | Longest Life | [https://open.kattis.com/problems/longestlife](https://open.kattis.com/problems/longestlife) |
| `monitoringskipaths` | Monitoring Ski Paths | [https://open.kattis.com/problems/monitoringskipaths](https://open.kattis.com/problems/monitoringskipaths) |
| `peggamefortwo` | Peg Game for Two | [https://open.kattis.com/problems/peggamefortwo](https://open.kattis.com/problems/peggamefortwo) |
| `runlengthencodingrun` | Run-Length Encoding, Run! | [https://open.kattis.com/problems/runlengthencodingrun](https://open.kattis.com/problems/runlengthencodingrun) |
| `superdoku` | Superdoku | [https://open.kattis.com/problems/superdoku](https://open.kattis.com/problems/superdoku) |
| `triangularclouds` | Triangular Clouds | [https://open.kattis.com/problems/triangularclouds](https://open.kattis.com/problems/triangularclouds) |

---

## North America Qualifier (2019)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2070](https://solved.ac/problems/archive/contest/2070)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2019%20ICPC%20North%20American%20Qualifier%20Contest](https://open.kattis.com/problem-sources/2019%20ICPC%20North%20American%20Qualifier%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `circuitmath` | Circuit Math | [https://open.kattis.com/problems/circuitmath](https://open.kattis.com/problems/circuitmath) |
| `diagonalcut` | Diagonal Cut | [https://open.kattis.com/problems/diagonalcut](https://open.kattis.com/problems/diagonalcut) |
| `gerrymandering` | Gerrymandering | [https://open.kattis.com/problems/gerrymandering](https://open.kattis.com/problems/gerrymandering) |
| `missingnumbers` | Missing Numbers | [https://open.kattis.com/problems/missingnumbers](https://open.kattis.com/problems/missingnumbers) |
| `nvwls` | NVWLS | [https://open.kattis.com/problems/nvwls](https://open.kattis.com/problems/nvwls) |
| `prospecting` | Prospecting | [https://open.kattis.com/problems/prospecting](https://open.kattis.com/problems/prospecting) |
| `researchproductivityindex` | Research Productivity Index | [https://open.kattis.com/problems/researchproductivityindex](https://open.kattis.com/problems/researchproductivityindex) |
| `runningroutes` | Running Routes | [https://open.kattis.com/problems/runningroutes](https://open.kattis.com/problems/runningroutes) |
| `slowleak` | Slow Leak | [https://open.kattis.com/problems/slowleak](https://open.kattis.com/problems/slowleak) |
| `stopcounting` | Stop Counting! | [https://open.kattis.com/problems/stopcounting](https://open.kattis.com/problems/stopcounting) |
| `summertrip` | Summer Trip | [https://open.kattis.com/problems/summertrip](https://open.kattis.com/problems/summertrip) |
| `travelingmerchant` | Traveling Merchant | [https://open.kattis.com/problems/travelingmerchant](https://open.kattis.com/problems/travelingmerchant) |
| `zipline` | Zipline | [https://open.kattis.com/problems/zipline](https://open.kattis.com/problems/zipline) |

---

## North America Qualifier (2020)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2440](https://solved.ac/problems/archive/contest/2440)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2020%20ICPC%20North%20American%20Qualifier%20Contest](https://open.kattis.com/problem-sources/2020%20ICPC%20North%20American%20Qualifier%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `drawingcircles` | Drawing Circles | [https://open.kattis.com/problems/drawingcircles](https://open.kattis.com/problems/drawingcircles) |
| `perfectpathpatrol` | Perfect Path Patrol | [https://open.kattis.com/problems/perfectpathpatrol](https://open.kattis.com/problems/perfectpathpatrol) |
| `skysthelimit` | Sky’s the Limit | [https://open.kattis.com/problems/skysthelimit](https://open.kattis.com/problems/skysthelimit) |
| `usingdigits` | Using Digits | [https://open.kattis.com/problems/usingdigits](https://open.kattis.com/problems/usingdigits) |

---

## North America Qualifier (2021)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/3015](https://solved.ac/problems/archive/contest/3015)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2021%20ICPC%20North%20American%20Qualifier%20Contest%20%28Jan%202022%29](https://open.kattis.com/problem-sources/2021%20ICPC%20North%20American%20Qualifier%20Contest%20%28Jan%202022%29)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `alienintegers` | Alien Integers | [https://open.kattis.com/problems/alienintegers](https://open.kattis.com/problems/alienintegers) |
| `avoidingasteroids` | Avoiding Asteroids | [https://open.kattis.com/problems/avoidingasteroids](https://open.kattis.com/problems/avoidingasteroids) |
| `commonfactors` | Common Factors | [https://open.kattis.com/problems/commonfactors](https://open.kattis.com/problems/commonfactors) |
| `dimensionalanalysis` | Dimensional Analysis | [https://open.kattis.com/problems/dimensionalanalysis](https://open.kattis.com/problems/dimensionalanalysis) |
| `eyeofsauron` | Eye of Sauron | [https://open.kattis.com/problems/eyeofsauron](https://open.kattis.com/problems/eyeofsauron) |
| `ilovestrings` | ilove Strings | [https://open.kattis.com/problems/ilovestrings](https://open.kattis.com/problems/ilovestrings) |
| `mrcodeformatgrader` | MrCodeFormatGrader | [https://open.kattis.com/problems/mrcodeformatgrader](https://open.kattis.com/problems/mrcodeformatgrader) |
| `mult` | Mult! | [https://open.kattis.com/problems/mult](https://open.kattis.com/problems/mult) |
| `pizzaparty` | Pizza Party! | [https://open.kattis.com/problems/pizzaparty](https://open.kattis.com/problems/pizzaparty) |
| `stackingup` | Stacking Up | [https://open.kattis.com/problems/stackingup](https://open.kattis.com/problems/stackingup) |
| `stampcombinations` | Stamp Combinations | [https://open.kattis.com/problems/stampcombinations](https://open.kattis.com/problems/stampcombinations) |
| `swordcounting` | Sword Counting | [https://open.kattis.com/problems/swordcounting](https://open.kattis.com/problems/swordcounting) |
| `tictacstate` | Tic-Tac State | [https://open.kattis.com/problems/tictacstate](https://open.kattis.com/problems/tictacstate) |
| `vennintervals` | Venn Intervals | [https://open.kattis.com/problems/vennintervals](https://open.kattis.com/problems/vennintervals) |

---

## North America Qualifier (2022)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/3475](https://solved.ac/problems/archive/contest/3475)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2022%20ICPC%20North%20America%20Qualifier](https://open.kattis.com/problem-sources/2022%20ICPC%20North%20America%20Qualifier)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `beastbullies` | Beast Bullies | [https://open.kattis.com/problems/beastbullies](https://open.kattis.com/problems/beastbullies) |
| `birthdaygift` | Birthday Gift | [https://open.kattis.com/problems/birthdaygift](https://open.kattis.com/problems/birthdaygift) |
| `classfieldtrip` | Class Field Trip | [https://open.kattis.com/problems/classfieldtrip](https://open.kattis.com/problems/classfieldtrip) |
| `ghostleg` | Ghost Leg | [https://open.kattis.com/problems/ghostleg](https://open.kattis.com/problems/ghostleg) |
| `mazeman` | MazeMan | [https://open.kattis.com/problems/mazeman](https://open.kattis.com/problems/mazeman) |
| `metronome` | Metronome | [https://open.kattis.com/problems/metronome](https://open.kattis.com/problems/metronome) |
| `movienight` | Movie Night | [https://open.kattis.com/problems/movienight](https://open.kattis.com/problems/movienight) |
| `platformplacing` | Platform Placing | [https://open.kattis.com/problems/platformplacing](https://open.kattis.com/problems/platformplacing) |
| `roomevacuation` | Room Evacuation | [https://open.kattis.com/problems/roomevacuation](https://open.kattis.com/problems/roomevacuation) |
| `smallestcalculatedvalue` | Smallest Calculated Value | [https://open.kattis.com/problems/smallestcalculatedvalue](https://open.kattis.com/problems/smallestcalculatedvalue) |
| `spideydistance` | Spidey Distance | [https://open.kattis.com/problems/spideydistance](https://open.kattis.com/problems/spideydistance) |
| `tollroads` | Toll Roads | [https://open.kattis.com/problems/tollroads](https://open.kattis.com/problems/tollroads) |

---

## North America Qualifier (2023)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4130](https://solved.ac/problems/archive/contest/4130)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2023%20ICPC%20North%20America%20Qualifier%2030%20September](https://open.kattis.com/problem-sources/2023%20ICPC%20North%20America%20Qualifier%2030%20September)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `contestadvancement` | Contestadvancement | [https://open.kattis.com/problems/contestadvancement](https://open.kattis.com/problems/contestadvancement) |
| `digittranslation` | Digit Translation | [https://open.kattis.com/problems/digittranslation](https://open.kattis.com/problems/digittranslation) |
| `donthungertogether` | Don’t Hunger Together | [https://open.kattis.com/problems/donthungertogether](https://open.kattis.com/problems/donthungertogether) |
| `gardenofthorns` | Garden of Thorns | [https://open.kattis.com/problems/gardenofthorns](https://open.kattis.com/problems/gardenofthorns) |
| `icpcteamgeneration` | ICPC Team Generation | [https://open.kattis.com/problems/icpcteamgeneration](https://open.kattis.com/problems/icpcteamgeneration) |
| `isyavowel` | Is Y a Vowel? | [https://open.kattis.com/problems/isyavowel](https://open.kattis.com/problems/isyavowel) |
| `linesperhour` | Lines Per Hour | [https://open.kattis.com/problems/linesperhour](https://open.kattis.com/problems/linesperhour) |
| `magnesiumsupplementation` | Magnesium Supplementation | [https://open.kattis.com/problems/magnesiumsupplementation](https://open.kattis.com/problems/magnesiumsupplementation) |
| `missingnumber` | Missing Number | [https://open.kattis.com/problems/missingnumber2](https://open.kattis.com/problems/missingnumber2) |
| `tipofyourtongue` | Tip of Your Tongue | [https://open.kattis.com/problems/tipofyourtongue](https://open.kattis.com/problems/tipofyourtongue) |
| `veryimportantedge` | Very Important Edge | [https://open.kattis.com/problems/veryimportantedge](https://open.kattis.com/problems/veryimportantedge) |
| `waterjournal` | Water Journal | [https://open.kattis.com/problems/waterjournal](https://open.kattis.com/problems/waterjournal) |

---

## North America Qualifier (2024)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4310](https://solved.ac/problems/archive/contest/4310)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2024%20ICPC%20North%20America%20Qualifier](https://open.kattis.com/problem-sources/2024%20ICPC%20North%20America%20Qualifier)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `balatro` | Balatro | [https://open.kattis.com/problems/balatro](https://open.kattis.com/problems/balatro) |
| `bikesandbarricades` | Bikes and Barricades | [https://open.kattis.com/problems/bikesandbarricades](https://open.kattis.com/problems/bikesandbarricades) |
| `callforproblems` | Call for Problems | [https://open.kattis.com/problems/callforproblems](https://open.kattis.com/problems/callforproblems) |
| `colorfultrees` | Colorful Trees | [https://open.kattis.com/problems/colorfultrees](https://open.kattis.com/problems/colorfultrees) |
| `dishonestlottery` | Dishonest Lottery | [https://open.kattis.com/problems/dishonestlottery](https://open.kattis.com/problems/dishonestlottery) |
| `ellipseeclipse` | Ellipse Eclipse | [https://open.kattis.com/problems/ellipseeclipse](https://open.kattis.com/problems/ellipseeclipse) |
| `gearsandaxles` | Gears and Axles | [https://open.kattis.com/problems/gearsandaxles](https://open.kattis.com/problems/gearsandaxles) |
| `geneticreconstruction` | Genetic Reconstruction | [https://open.kattis.com/problems/geneticreconstruction](https://open.kattis.com/problems/geneticreconstruction) |
| `lightup` | Light Up | [https://open.kattis.com/problems/lightup](https://open.kattis.com/problems/lightup) |
| `mengersponge` | Menger Sponge | [https://open.kattis.com/problems/mengersponge](https://open.kattis.com/problems/mengersponge) |
| `rhythmflow` | Rhythm Flow | [https://open.kattis.com/problems/rhythmflow](https://open.kattis.com/problems/rhythmflow) |
| `snake` | Snake | [https://open.kattis.com/problems/snake](https://open.kattis.com/problems/snake) |

---

## North America Qualifier (2025)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4589](https://solved.ac/problems/archive/contest/4589)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2025%20ICPC%20North%20America%20Qualifier](https://open.kattis.com/problem-sources/2025%20ICPC%20North%20America%20Qualifier)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `artinstallation` | Art Installation | [https://open.kattis.com/problems/artinstallation](https://open.kattis.com/problems/artinstallation) |
| `backuptowers` | Backup Towers | [https://open.kattis.com/problems/backuptowers](https://open.kattis.com/problems/backuptowers) |
| `callforproblemsround2` | Callforproblemsround2 | [https://open.kattis.com/problems/callforproblemsround2](https://open.kattis.com/problems/callforproblemsround2) |
| `carlsmazesolvingalgorithm` | Carl’s Maze-Solving Algorithm | [https://open.kattis.com/problems/carlsmazesolvingalgorithm](https://open.kattis.com/problems/carlsmazesolvingalgorithm) |
| `curling` | Curling | [https://open.kattis.com/problems/curling](https://open.kattis.com/problems/curling) |
| `figureskatingjudging` | Figure Skating Judging | [https://open.kattis.com/problems/figureskatingjudging](https://open.kattis.com/problems/figureskatingjudging) |
| `mingle` | Mingle | [https://open.kattis.com/problems/mingle](https://open.kattis.com/problems/mingle) |
| `seesaw` | Seesaw | [https://open.kattis.com/problems/seesaw](https://open.kattis.com/problems/seesaw) |
| `starguardians` | Star Guardians | [https://open.kattis.com/problems/starguardians](https://open.kattis.com/problems/starguardians) |
| `tenplayerbingo` | Ten Player Bingo | [https://open.kattis.com/problems/tenplayerbingo](https://open.kattis.com/problems/tenplayerbingo) |
| `treasurehunt2` | Treasurehunt2 | [https://open.kattis.com/problems/treasurehunt2](https://open.kattis.com/problems/treasurehunt2) |
| `triplejump` | Triple Jump | [https://open.kattis.com/problems/triplejump](https://open.kattis.com/problems/triplejump) |
| `utopiarelationships` | Utopia Relationships | [https://open.kattis.com/problems/utopiarelationships](https://open.kattis.com/problems/utopiarelationships) |

---

## North America Qualifier (2026)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2026%20ICPC%20North%20America%20Qualifier](https://open.kattis.com/problem-sources/2026%20ICPC%20North%20America%20Qualifier)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `airtime` | Airtime | [https://open.kattis.com/problems/airtime](https://open.kattis.com/problems/airtime) |
| `babylon` | Babylon | [https://open.kattis.com/problems/babylon](https://open.kattis.com/problems/babylon) |
| `browniecutting` | Brownie Cutting | [https://open.kattis.com/problems/browniecutting](https://open.kattis.com/problems/browniecutting) |
| `espressomacchiato` | Espresso Macchiato | [https://open.kattis.com/problems/espressomacchiato](https://open.kattis.com/problems/espressomacchiato) |
| `fairytale` | Fairytale | [https://open.kattis.com/problems/fairytale](https://open.kattis.com/problems/fairytale) |
| `lastdance` | Last Dance | [https://open.kattis.com/problems/lastdance](https://open.kattis.com/problems/lastdance) |
| `mysystem` | My System | [https://open.kattis.com/problems/mysystem](https://open.kattis.com/problems/mysystem) |
| `onlyoneorder` | Only One Order | [https://open.kattis.com/problems/onlyoneorder](https://open.kattis.com/problems/onlyoneorder) |
| `regarde` | Regarde! | [https://open.kattis.com/problems/regarde](https://open.kattis.com/problems/regarde) |
| `sixseven3` | Sixseven3 | [https://open.kattis.com/problems/sixseven3](https://open.kattis.com/problems/sixseven3) |
| `stardustcurry` | Stardust Curry | [https://open.kattis.com/problems/stardustcurry](https://open.kattis.com/problems/stardustcurry) |
| `thendaysofchristmas2` | Thendaysofchristmas2 | [https://open.kattis.com/problems/thendaysofchristmas2](https://open.kattis.com/problems/thendaysofchristmas2) |
| `tourismbalance` | Tourism Balance | [https://open.kattis.com/problems/tourismbalance](https://open.kattis.com/problems/tourismbalance) |

---

## North American Big-South super region (2022)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2022%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2025%2C%202023%29](https://open.kattis.com/problem-sources/2022%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2025%2C%202023%29)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `alchemy` | Alchemy | [https://open.kattis.com/problems/alchemy2](https://open.kattis.com/problems/alchemy2) |
| `blueberrywaffle` | Blueberrywaffle | [https://open.kattis.com/problems/blueberrywaffle](https://open.kattis.com/problems/blueberrywaffle) |
| `branchmanager` | Branch Manager | [https://open.kattis.com/problems/branchmanager](https://open.kattis.com/problems/branchmanager) |
| `chocolatechipfabrication` | Chocolate Chip Fabrication | [https://open.kattis.com/problems/chocolatechipfabrication](https://open.kattis.com/problems/chocolatechipfabrication) |
| `colortubes` | Color Tubes | [https://open.kattis.com/problems/colortubes](https://open.kattis.com/problems/colortubes) |
| `countingsatellites` | Counting Satellites | [https://open.kattis.com/problems/countingsatellites](https://open.kattis.com/problems/countingsatellites) |
| `creativeaccounting` | Creative Accounting | [https://open.kattis.com/problems/creativeaccounting](https://open.kattis.com/problems/creativeaccounting) |
| `erodingpillars` | Eroding Pillars | [https://open.kattis.com/problems/erodingpillars](https://open.kattis.com/problems/erodingpillars) |
| `everythingisanail` | Everythingisanail | [https://open.kattis.com/problems/everythingisanail](https://open.kattis.com/problems/everythingisanail) |
| `exponentexchange` | Exponent Exchange | [https://open.kattis.com/problems/exponentexchange](https://open.kattis.com/problems/exponentexchange) |
| `fadingwind` | Fading Wind | [https://open.kattis.com/problems/fadingwind](https://open.kattis.com/problems/fadingwind) |
| `familyvisits` | Family Visits | [https://open.kattis.com/problems/familyvisits](https://open.kattis.com/problems/familyvisits) |
| `foodprocessor` | Foodprocessor | [https://open.kattis.com/problems/foodprocessor](https://open.kattis.com/problems/foodprocessor) |
| `loneknight` | Lone Knight | [https://open.kattis.com/problems/loneknight](https://open.kattis.com/problems/loneknight) |
| `streetsahead` | Streetsahead | [https://open.kattis.com/problems/streetsahead](https://open.kattis.com/problems/streetsahead) |
| `sunandmoon` | Sunandmoon | [https://open.kattis.com/problems/sunandmoon](https://open.kattis.com/problems/sunandmoon) |
| `threedice` | Three Dice | [https://open.kattis.com/problems/threedice](https://open.kattis.com/problems/threedice) |
| `trianglecontainment` | Triangle Containment | [https://open.kattis.com/problems/trianglecontainment](https://open.kattis.com/problems/trianglecontainment) |

---

## North American Big-South super region (2023)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2023%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2024%2C%202024%29](https://open.kattis.com/problem-sources/2023%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2024%2C%202024%29)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `abcstring` | ABC String | [https://open.kattis.com/problems/abcstring](https://open.kattis.com/problems/abcstring) |
| `acappellarecording` | Acappellarecording | [https://open.kattis.com/problems/acappellarecording](https://open.kattis.com/problems/acappellarecording) |
| `acceptableseatingarrangements` | Acceptableseatingarrangements | [https://open.kattis.com/problems/acceptableseatingarrangements](https://open.kattis.com/problems/acceptableseatingarrangements) |
| `balancedtreepath` | Balanced Tree Path | [https://open.kattis.com/problems/balancedtreepath](https://open.kattis.com/problems/balancedtreepath) |
| `champernowneverification` | Champernowne Verification | [https://open.kattis.com/problems/champernowneverification](https://open.kattis.com/problems/champernowneverification) |
| `crammingforfinals` | Cramming for Finals | [https://open.kattis.com/problems/crammingforfinals](https://open.kattis.com/problems/crammingforfinals) |
| `eccentricexcursion` | Eccentric Excursion | [https://open.kattis.com/problems/eccentricexcursion](https://open.kattis.com/problems/eccentricexcursion) |
| `fourdierolls` | Fourdierolls | [https://open.kattis.com/problems/fourdierolls](https://open.kattis.com/problems/fourdierolls) |
| `itemselection` | Item Selection | [https://open.kattis.com/problems/itemselection](https://open.kattis.com/problems/itemselection) |
| `matrixfraud` | Matrix Fraud | [https://open.kattis.com/problems/matrixfraud](https://open.kattis.com/problems/matrixfraud) |
| `oncallteam` | On-Call Team | [https://open.kattis.com/problems/oncallteam](https://open.kattis.com/problems/oncallteam) |
| `orderedproblemset` | Orderedproblemset | [https://open.kattis.com/problems/orderedproblemset](https://open.kattis.com/problems/orderedproblemset) |
| `rampantgrowth` | Rampantgrowth | [https://open.kattis.com/problems/rampantgrowth](https://open.kattis.com/problems/rampantgrowth) |
| `rangeediting` | Range Editing | [https://open.kattis.com/problems/rangeediting](https://open.kattis.com/problems/rangeediting) |
| `segmentdrawing` | Segment Drawing | [https://open.kattis.com/problems/segmentdrawing](https://open.kattis.com/problems/segmentdrawing) |
| `sequenceguessing` | Sequence Guessing | [https://open.kattis.com/problems/sequenceguessing](https://open.kattis.com/problems/sequenceguessing) |
| `streetsbehind` | Streets Behind | [https://open.kattis.com/problems/streetsbehind](https://open.kattis.com/problems/streetsbehind) |
| `training` | Training | [https://open.kattis.com/problems/training](https://open.kattis.com/problems/training) |
| `triplesevens` | Triplesevens | [https://open.kattis.com/problems/triplesevens](https://open.kattis.com/problems/triplesevens) |

---

## North American Big-South super region (2024)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2024%20ICPC%20South%20Central%2C%20South%20East%20and%20Mid%20Atlantic%20Regional%20%28November%2016%2C%202024%29](https://open.kattis.com/problem-sources/2024%20ICPC%20South%20Central%2C%20South%20East%20and%20Mid%20Atlantic%20Regional%20%28November%2016%2C%202024%29)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `citybike` | Citybike | [https://open.kattis.com/problems/citybike](https://open.kattis.com/problems/citybike) |
| `duelofcards` | Duel of Cards | [https://open.kattis.com/problems/duelofcards](https://open.kattis.com/problems/duelofcards) |
| `elevatedrails` | Elevatedrails | [https://open.kattis.com/problems/elevatedrails](https://open.kattis.com/problems/elevatedrails) |
| `findingkeys` | Findingkeys | [https://open.kattis.com/problems/findingkeys](https://open.kattis.com/problems/findingkeys) |
| `herbmixing` | Herb Mixing | [https://open.kattis.com/problems/herbmixing](https://open.kattis.com/problems/herbmixing) |
| `intergalacticteam` | Intergalactic Team | [https://open.kattis.com/problems/intergalacticteam](https://open.kattis.com/problems/intergalacticteam) |
| `islandmemories` | Island Memories | [https://open.kattis.com/problems/islandmemories](https://open.kattis.com/problems/islandmemories) |
| `memoriesofpassportstamps` | Memories of Passport Stamps | [https://open.kattis.com/problems/memoriesofpassportstamps](https://open.kattis.com/problems/memoriesofpassportstamps) |
| `officebuilding` | Office Building | [https://open.kattis.com/problems/officebuilding](https://open.kattis.com/problems/officebuilding) |
| `optimizedcheating` | Optimized Cheating | [https://open.kattis.com/problems/optimizedcheating](https://open.kattis.com/problems/optimizedcheating) |
| `perfectsquares` | Perfect Squares | [https://open.kattis.com/problems/perfectsquares](https://open.kattis.com/problems/perfectsquares) |
| `pianissimo` | Pianissimo | [https://open.kattis.com/problems/pianissimo](https://open.kattis.com/problems/pianissimo) |
| `trafficlights` | Traffic Lights | [https://open.kattis.com/problems/trafficlights](https://open.kattis.com/problems/trafficlights) |
| `trianglesofasquare` | Triangles of a Square | [https://open.kattis.com/problems/trianglesofasquare](https://open.kattis.com/problems/trianglesofasquare) |
| `virtualrealityplayspace` | Virtualrealityplayspace | [https://open.kattis.com/problems/vrplayspace](https://open.kattis.com/problems/vrplayspace) |
| `welcomesign` | Welcome Sign | [https://open.kattis.com/problems/welcomesign](https://open.kattis.com/problems/welcomesign) |
| `whichoneislarger` | Which One is Larger | [https://open.kattis.com/problems/whichoneislarger](https://open.kattis.com/problems/whichoneislarger) |

---

## North American Big-South super region (2025)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2025%20ICPC%20South%20Central%2C%20South%20East%20and%20Mid%20Atlantic%20Regional%20%28November%208%2C%202025%29](https://open.kattis.com/problem-sources/2025%20ICPC%20South%20Central%2C%20South%20East%20and%20Mid%20Atlantic%20Regional%20%28November%208%2C%202025%29)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `blindbottles` | Blind Bottles | [https://open.kattis.com/problems/blindbottles](https://open.kattis.com/problems/blindbottles) |
| `breakout` | Breakout | [https://open.kattis.com/problems/breakout2](https://open.kattis.com/problems/breakout2) |
| `galaxygovernance` | Galaxygovernance | [https://open.kattis.com/problems/galaxygovernance](https://open.kattis.com/problems/galaxygovernance) |
| `gameofnines` | Game of Nines | [https://open.kattis.com/problems/gameofnines](https://open.kattis.com/problems/gameofnines) |
| `guidgenerator` | GUID Generator | [https://open.kattis.com/problems/guidgenerator](https://open.kattis.com/problems/guidgenerator) |
| `inazumacubedevice` | Inazuma Cube Device | [https://open.kattis.com/problems/inazumacubedevice](https://open.kattis.com/problems/inazumacubedevice) |
| `manhattaninterference` | Manhattaninterference | [https://open.kattis.com/problems/manhattaninterference](https://open.kattis.com/problems/manhattaninterference) |
| `meetingfreefridays` | Meetingfreefridays | [https://open.kattis.com/problems/meetingfreefridays](https://open.kattis.com/problems/meetingfreefridays) |
| `memoriesofpassportcontrol` | Memories of Passport Control | [https://open.kattis.com/problems/memoriesofpassportcontrol](https://open.kattis.com/problems/memoriesofpassportcontrol) |
| `moonlittimemachine` | Moonlit Time Machine | [https://open.kattis.com/problems/moonlittimemachine](https://open.kattis.com/problems/moonlittimemachine) |
| `muchroomformushrooms` | Much Room for Mushrooms | [https://open.kattis.com/problems/muchroomformushrooms](https://open.kattis.com/problems/muchroomformushrooms) |
| `onewayonly` | One Way Only | [https://open.kattis.com/problems/onewayonly](https://open.kattis.com/problems/onewayonly) |
| `orchardfence` | Orchardfence | [https://open.kattis.com/problems/orchardfence](https://open.kattis.com/problems/orchardfence) |
| `photoencoding` | Photo Encoding | [https://open.kattis.com/problems/photoencoding](https://open.kattis.com/problems/photoencoding) |
| `rowsofstars` | Rowsofstars | [https://open.kattis.com/problems/rowsofstars](https://open.kattis.com/problems/rowsofstars) |
| `shinjukustation` | Shinjuku Station | [https://open.kattis.com/problems/shinjukustation](https://open.kattis.com/problems/shinjukustation) |
| `snakeystring` | Snakey String | [https://open.kattis.com/problems/snakeystring](https://open.kattis.com/problems/snakeystring) |
| `swapforpalindrome` | Swap for Palindrome | [https://open.kattis.com/problems/swapforpalindrome](https://open.kattis.com/problems/swapforpalindrome) |
| `treeracing` | Treeracing | [https://open.kattis.com/problems/treeracing](https://open.kattis.com/problems/treeracing) |

---

## North Central North America Regional Contest (2013)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1231](https://solved.ac/problems/archive/contest/1231)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | A | **UNMATCHED** |
| `B` | B | **UNMATCHED** |
| `C` | C | **UNMATCHED** |
| `D` | D | **UNMATCHED** |
| `E` | E | **UNMATCHED** |
| `F` | F | **UNMATCHED** |
| `G` | G | **UNMATCHED** |
| `H` | H | **UNMATCHED** |

---

## North Central North America Regional Contest (2014)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1302](https://solved.ac/problems/archive/contest/1302)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | A | **UNMATCHED** |
| `B` | B | **UNMATCHED** |
| `C` | C | **UNMATCHED** |
| `D` | D | **UNMATCHED** |
| `E` | E | **UNMATCHED** |
| `F` | F | **UNMATCHED** |
| `G` | G | **UNMATCHED** |
| `H` | H | **UNMATCHED** |
| `I` | I | **UNMATCHED** |

---

## North Central North America Regional Contest (2017)

* **solved.ac Archive:** [https://open.kattis.com/problem-sources/2017%20ICPC%20East-Central%20NA%20Regional%20Contest](https://open.kattis.com/problem-sources/2017%20ICPC%20East-Central%20NA%20Regional%20Contest)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2017%20ACM%20ICPC%20North%20Central%20North%20America%20Regional%20Contest](https://open.kattis.com/problem-sources/2017%20ACM%20ICPC%20North%20Central%20North%20America%20Regional%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `IsAHasA` | Is-A? Has-A? Who Knowz-A? | **UNMATCHED** |
| `amoebas` | Sheba | **UNMATCHED** |
| `atlantis` | Atlantis | [https://open.kattis.com/problems/atlantis](https://open.kattis.com/problems/atlantis) |
| `lostmap` | Lost Map | [https://open.kattis.com/problems/lostmap](https://open.kattis.com/problems/lostmap) |
| `pokemongogo` | Pokemon Go Go | [https://open.kattis.com/problems/pokemongogo](https://open.kattis.com/problems/pokemongogo) |
| `racingalphabet` | Racing Around the Alphabet | [https://open.kattis.com/problems/racingalphabet](https://open.kattis.com/problems/racingalphabet) |
| `smootharray` | Smooth Array | [https://open.kattis.com/problems/smootharray](https://open.kattis.com/problems/smootharray) |
| `stoichiometry` | Stoichiometry | [https://open.kattis.com/problems/stoichiometry](https://open.kattis.com/problems/stoichiometry) |
| `urbandesign` | Urban Design | [https://open.kattis.com/problems/urbandesign](https://open.kattis.com/problems/urbandesign) |
| `zebrasocelots` | Zebras and Ocelots | [https://open.kattis.com/problems/zebrasocelots](https://open.kattis.com/problems/zebrasocelots) |

---

## North Central North America Regional Contest (2018)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1955](https://solved.ac/problems/archive/contest/1955)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2018%20ACM-ICPC%20North%20Central%20North%20America%20Regional%20Contest](https://open.kattis.com/problem-sources/2018%20ACM-ICPC%20North%20Central%20North%20America%20Regional%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `eulersnumber` | Euler's Number | [https://open.kattis.com/problems/eulersnumber](https://open.kattis.com/problems/eulersnumber) |
| `kaleidoscopicpalindromes` | Kaleidoscopic Palindromes | [https://open.kattis.com/problems/kaleidoscopicpalindromes](https://open.kattis.com/problems/kaleidoscopicpalindromes) |
| `lipschitzconstant` | Lipschitz Constant | [https://open.kattis.com/problems/lipschitzconstant](https://open.kattis.com/problems/lipschitzconstant) |
| `maximumsubarrays` | Maximum Subarrays | [https://open.kattis.com/problems/maximumsubarrays](https://open.kattis.com/problems/maximumsubarrays) |
| `newsalaries` | New Salaries | [https://open.kattis.com/problems/newsalaries](https://open.kattis.com/problems/newsalaries) |
| `otherside` | Other Side | [https://open.kattis.com/problems/otherside](https://open.kattis.com/problems/otherside) |
| `pokegene` | Pokegene | [https://open.kattis.com/problems/pokegene](https://open.kattis.com/problems/pokegene) |
| `rationalratio` | Rational Ratio | [https://open.kattis.com/problems/rationalratio](https://open.kattis.com/problems/rationalratio) |
| `traveltheskies` | Travel the Skies | [https://open.kattis.com/problems/traveltheskies](https://open.kattis.com/problems/traveltheskies) |
| `xentopia` | Tima goes to Xentopia | [https://open.kattis.com/problems/xentopia](https://open.kattis.com/problems/xentopia) |

---

## North Central North America Regional Contest (2020)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2457](https://solved.ac/problems/archive/contest/2457)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2020-2021%20North%20Central%20North%20America%20and%20Southern%20California%20ICPC%20Regional%20Contest](https://open.kattis.com/problem-sources/2020-2021%20North%20Central%20North%20America%20and%20Southern%20California%20ICPC%20Regional%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `adaloveslaces` | Ada Loveslaces | [https://open.kattis.com/problems/adaloveslaces](https://open.kattis.com/problems/adaloveslaces) |
| `agamemnonsodyssey` | Agamemnon's Odyssey | [https://open.kattis.com/problems/agamemnonsodyssey](https://open.kattis.com/problems/agamemnonsodyssey) |
| `codenames` | Codenames | [https://open.kattis.com/problems/codenames2](https://open.kattis.com/problems/codenames2) |
| `curve` | Curve Speed | [https://open.kattis.com/problems/curvespeed](https://open.kattis.com/problems/curvespeed) |
| `logdb` | LogDB | [https://open.kattis.com/problems/logdb](https://open.kattis.com/problems/logdb) |
| `rbinary` | Redundant Binary Notation | [https://open.kattis.com/problems/redundantbinarynotation](https://open.kattis.com/problems/redundantbinarynotation) |
| `recordmatching` | ICPC Record Matching | [https://open.kattis.com/problems/icpcrecordmatching](https://open.kattis.com/problems/icpcrecordmatching) |
| `ridehailing` | Ride-Hailing | [https://open.kattis.com/problems/ridehailing](https://open.kattis.com/problems/ridehailing) |
| `safesttaxi` | Safest Taxi | [https://open.kattis.com/problems/safesttaxi](https://open.kattis.com/problems/safesttaxi) |
| `speedometer` | Digital Speedometer | [https://open.kattis.com/problems/digitalspeedometer](https://open.kattis.com/problems/digitalspeedometer) |
| `stagger` | Staggering to the Finish | [https://open.kattis.com/problems/staggeringtothefinish](https://open.kattis.com/problems/staggeringtothefinish) |
| `substrings` | Substring Characters | [https://open.kattis.com/problems/substringcharacters](https://open.kattis.com/problems/substringcharacters) |

---

## Nordic Collegiate Programming Contest (2005)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/216](https://solved.ac/problems/archive/contest/216)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202005](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202005)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `crypto` | Crypto | **UNMATCHED** |
| `funny` | Funny | [https://open.kattis.com/problems/funnygames](https://open.kattis.com/problems/funnygames) |
| `kingdom` | Kingdom | **UNMATCHED** |
| `necklace` | Necklace | [https://open.kattis.com/problems/necklacedecomposition](https://open.kattis.com/problems/necklacedecomposition) |
| `outlets` | Outlets | **UNMATCHED** |
| `playground` | Playground | [https://open.kattis.com/problems/playground](https://open.kattis.com/problems/playground) |
| `robots` | Robots | **UNMATCHED** |
| `weather` | Weather | **UNMATCHED** |

---

## Nordic Collegiate Programming Contest (2006)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/215](https://solved.ac/problems/archive/contest/215)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202006](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202006)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `cardtrick` | Card Trick | [https://open.kattis.com/problems/cardtrick2](https://open.kattis.com/problems/cardtrick2) |
| `honey` | Honey | [https://open.kattis.com/problems/honey](https://open.kattis.com/problems/honey) |
| `jezzball` | Jezzball | [https://open.kattis.com/problems/jezzball](https://open.kattis.com/problems/jezzball) |
| `nasty` | Nasty | [https://open.kattis.com/problems/nastyhacks](https://open.kattis.com/problems/nastyhacks) |
| `random` | Random | [https://open.kattis.com/problems/randomwalking](https://open.kattis.com/problems/randomwalking) |
| `shootout` | Shoot-out | [https://open.kattis.com/problems/shootout](https://open.kattis.com/problems/shootout) |
| `tourguide` | Tour Guide | [https://open.kattis.com/problems/tourguide](https://open.kattis.com/problems/tourguide) |
| `traveling` | Traveling | [https://open.kattis.com/problems/travelingsalesman](https://open.kattis.com/problems/travelingsalesman) |
| `whacamole` | Whac-a-Mole | [https://open.kattis.com/problems/whacamole](https://open.kattis.com/problems/whacamole) |

---

## Nordic Collegiate Programming Contest (2007)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/214](https://solved.ac/problems/archive/contest/214)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202007](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202007)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `cuckoo` | Cuckoo | [https://open.kattis.com/problems/cuckoo](https://open.kattis.com/problems/cuckoo) |
| `debt` | Debt | [https://open.kattis.com/problems/debt](https://open.kattis.com/problems/debt) |
| `dna` | Dna | **UNMATCHED** |
| `dolls` | Dolls | **UNMATCHED** |
| `moogle` | Moogle | [https://open.kattis.com/problems/moogle](https://open.kattis.com/problems/moogle) |
| `parking` | Parking | [https://open.kattis.com/problems/parking2](https://open.kattis.com/problems/parking2) |
| `phone` | Phone | [https://open.kattis.com/problems/phonelist](https://open.kattis.com/problems/phonelist) |
| `shopaholic` | Shopaholic | [https://open.kattis.com/problems/shopaholic](https://open.kattis.com/problems/shopaholic) |
| `tank` | Tank | **UNMATCHED** |

---

## Nordic Collegiate Programming Contest (2008)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/213](https://solved.ac/problems/archive/contest/213)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202008](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202008)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `avenue` | Avenue | **UNMATCHED** |
| `bugs` | Bugs | **UNMATCHED** |
| `caching` | Caching | [https://open.kattis.com/problems/caching](https://open.kattis.com/problems/caching) |
| `code` | Code | [https://open.kattis.com/problems/codetheft](https://open.kattis.com/problems/codetheft) |
| `compression` | Compression | **UNMATCHED** |
| `dinner` | Dinner | [https://open.kattis.com/problems/dinner](https://open.kattis.com/problems/dinner) |
| `event` | Event | [https://open.kattis.com/problems/eventplanning](https://open.kattis.com/problems/eventplanning) |
| `evidence` | Evidence | **UNMATCHED** |
| `hunt` | Hunt | **UNMATCHED** |
| `triangle` | Triangle | **UNMATCHED** |

---

## Nordic Collegiate Programming Contest (2009)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/212](https://solved.ac/problems/archive/contest/212)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202009](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202009)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `allergy` | Allergy | [https://open.kattis.com/problems/allergy](https://open.kattis.com/problems/allergy) |
| `beacons` | Beacons | [https://open.kattis.com/problems/beacons](https://open.kattis.com/problems/beacons) |
| `escape` | Escape | **UNMATCHED** |
| `flight` | Flight | [https://open.kattis.com/problems/flight](https://open.kattis.com/problems/flight) |
| `gokigen` | Gokigen | **UNMATCHED** |
| `money` | Money | [https://open.kattis.com/problems/moneymatters](https://open.kattis.com/problems/moneymatters) |
| `permutations` | Permutations | **UNMATCHED** |
| `playfair` | Playfair | [https://open.kattis.com/problems/playfair](https://open.kattis.com/problems/playfair) |
| `rain` | Rain | [https://open.kattis.com/problems/rainfall2](https://open.kattis.com/problems/rainfall2) |
| `soda` | Soda | [https://open.kattis.com/problems/sodaslurper](https://open.kattis.com/problems/sodaslurper) |

---

## Nordic Collegiate Programming Contest (2010)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/211](https://solved.ac/problems/archive/contest/211)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202010](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202010)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `add-help` | Add Help | [https://open.kattis.com/problems/helpaphd](https://open.kattis.com/problems/helpaphd) |
| `borg` | Borg | [https://open.kattis.com/problems/borgboogie](https://open.kattis.com/problems/borgboogie) |
| `connect` | Connect | [https://open.kattis.com/problems/connect](https://open.kattis.com/problems/connect) |
| `doodle` | Doodle | [https://open.kattis.com/problems/doodling](https://open.kattis.com/problems/doodling) |
| `driving` | Driving | **UNMATCHED** |
| `gameshow` | Gameshow | **UNMATCHED** |
| `polyomino` | Polyomino | [https://open.kattis.com/problems/polyomino](https://open.kattis.com/problems/polyomino) |
| `roundtrip` | Roundtrip | **UNMATCHED** |
| `skyline` | Skyline | [https://open.kattis.com/problems/skyline](https://open.kattis.com/problems/skyline) |
| `statisticians` | Statisticians | [https://open.kattis.com/problems/statisticians](https://open.kattis.com/problems/statisticians) |
| `succession` | Succession | [https://open.kattis.com/problems/succession](https://open.kattis.com/problems/succession) |

---

## Nordic Collegiate Programming Contest (2011)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/210](https://solved.ac/problems/archive/contest/210)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202011](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202011)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `cartrouble` | Car Trouble | [https://open.kattis.com/problems/cartrouble](https://open.kattis.com/problems/cartrouble) |
| `deathknight` | Deathknight | [https://open.kattis.com/problems/deathknight](https://open.kattis.com/problems/deathknight) |
| `elevator` | Elevator | [https://open.kattis.com/problems/elevatortrouble](https://open.kattis.com/problems/elevatortrouble) |
| `enemydivision` | Enemy Division | [https://open.kattis.com/problems/enemydivision](https://open.kattis.com/problems/enemydivision) |
| `ls` | Ls | [https://open.kattis.com/problems/ls](https://open.kattis.com/problems/ls) |
| `megainversions` | Mega Inversions | [https://open.kattis.com/problems/megainversions](https://open.kattis.com/problems/megainversions) |
| `moose` | Moose | **UNMATCHED** |
| `primetime` | Prime Time | [https://open.kattis.com/problems/primetime](https://open.kattis.com/problems/primetime) |
| `robots` | Robots | [https://open.kattis.com/problems/robotsonagrid](https://open.kattis.com/problems/robotsonagrid) |
| `space` | Space | **UNMATCHED** |

---

## Nordic Collegiate Programming Contest (2012)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/209](https://solved.ac/problems/archive/contest/209)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202012](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202012)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `aaah` | Aaah! | [https://open.kattis.com/problems/aaah](https://open.kattis.com/problems/aaah) |
| `bread` | Bread | [https://open.kattis.com/problems/bread](https://open.kattis.com/problems/bread) |
| `cookieselection` | Cookie Selection | [https://open.kattis.com/problems/cookieselection](https://open.kattis.com/problems/cookieselection) |
| `doorman` | Doorman | [https://open.kattis.com/problems/doorman](https://open.kattis.com/problems/doorman) |
| `ecodriving` | Eco-driving | [https://open.kattis.com/problems/ecodriving](https://open.kattis.com/problems/ecodriving) |
| `foodreview` | Food Review | [https://open.kattis.com/problems/foodreview](https://open.kattis.com/problems/foodreview) |
| `galactic` | Galactic | [https://open.kattis.com/problems/galactic](https://open.kattis.com/problems/galactic) |
| `horror` | Horror | [https://open.kattis.com/problems/horror](https://open.kattis.com/problems/horror) |
| `infiltration` | Infiltration | [https://open.kattis.com/problems/infiltration](https://open.kattis.com/problems/infiltration) |
| `juice` | Juice | [https://open.kattis.com/problems/juice](https://open.kattis.com/problems/juice) |
| `kindergarten` | Kindergarten | **UNMATCHED** |
| `luggage` | Luggage | [https://open.kattis.com/problems/luggage](https://open.kattis.com/problems/luggage) |

---

## Nordic Collegiate Programming Contest (2013)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1146](https://solved.ac/problems/archive/contest/1146)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202013](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202013)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `cliffwalk` | Cliff Walk | [https://open.kattis.com/problems/cliffwalk](https://open.kattis.com/problems/cliffwalk) |
| `dance` | Dance Reconstruction | [https://open.kattis.com/problems/dance](https://open.kattis.com/problems/dance) |
| `dartboard` | Dartboard | [https://open.kattis.com/problems/dartboard](https://open.kattis.com/problems/dartboard) |
| `erase` | Erase Securely | [https://open.kattis.com/problems/erase](https://open.kattis.com/problems/erase) |
| `pinball` | Pinball | [https://open.kattis.com/problems/pinball](https://open.kattis.com/problems/pinball) |
| `roberthood` | Robert Hood | [https://open.kattis.com/problems/roberthood](https://open.kattis.com/problems/roberthood) |
| `timebomb` | Timebomb | [https://open.kattis.com/problems/timebomb](https://open.kattis.com/problems/timebomb) |
| `trees` | Planting Trees | [https://open.kattis.com/problems/plantingtrees](https://open.kattis.com/problems/plantingtrees) |
| `trick` | Number Trick | [https://open.kattis.com/problems/trick](https://open.kattis.com/problems/trick) |
| `vegetables` | Boiling Vegetables | [https://open.kattis.com/problems/vegetables](https://open.kattis.com/problems/vegetables) |
| `virus` | Virus Replication | [https://open.kattis.com/problems/virus](https://open.kattis.com/problems/virus) |

---

## Nordic Collegiate Programming Contest (2014)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1284](https://solved.ac/problems/archive/contest/1284)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202014](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202014)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `amanda` | Amanda Lounges | [https://open.kattis.com/problems/amanda](https://open.kattis.com/problems/amanda) |
| `basincity` | Basin City Surveillance | [https://open.kattis.com/problems/basincity](https://open.kattis.com/problems/basincity) |
| `catalansquare` | Catalan Square | [https://open.kattis.com/problems/catalansquare](https://open.kattis.com/problems/catalansquare) |
| `ceremony` | Opening Ceremony | [https://open.kattis.com/problems/ceremony](https://open.kattis.com/problems/ceremony) |
| `clockpictures` | Clock Pictures | [https://open.kattis.com/problems/clockpictures](https://open.kattis.com/problems/clockpictures) |
| `dicegame` | Dice Game | [https://open.kattis.com/problems/dicegame](https://open.kattis.com/problems/dicegame) |
| `outing` | Outing | [https://open.kattis.com/problems/outing](https://open.kattis.com/problems/outing) |
| `particles` | Particle Swapping | [https://open.kattis.com/problems/particles](https://open.kattis.com/problems/particles) |
| `roadwork` | Road Work | [https://open.kattis.com/problems/roadwork](https://open.kattis.com/problems/roadwork) |
| `squares` | How many squares? | [https://open.kattis.com/problems/squares](https://open.kattis.com/problems/squares) |
| `trainpassengers` | Train Passengers | [https://open.kattis.com/problems/trainpassengers](https://open.kattis.com/problems/trainpassengers) |

---

## Nordic Collegiate Programming Contest (2015)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1393](https://solved.ac/problems/archive/contest/1393)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202015](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202015)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `adjoin` | Adjoin the Networks | [https://open.kattis.com/problems/adjoin](https://open.kattis.com/problems/adjoin) |
| `bells` | Bell Ringing | [https://open.kattis.com/problems/bells](https://open.kattis.com/problems/bells) |
| `conundrum` | Cryptographer's Conundrum | [https://open.kattis.com/problems/conundrum](https://open.kattis.com/problems/conundrum) |
| `downtime` | Disastrous Downtime | [https://open.kattis.com/problems/downtime](https://open.kattis.com/problems/downtime) |
| `entertainmentbox` | Entertainment Box | [https://open.kattis.com/problems/entertainmentbox](https://open.kattis.com/problems/entertainmentbox) |
| `floppy` | Floppy Music | [https://open.kattis.com/problems/floppy](https://open.kattis.com/problems/floppy) |
| `goblingardenguards` | Goblin Garden Guards | [https://open.kattis.com/problems/goblingardenguards](https://open.kattis.com/problems/goblingardenguards) |
| `heropower` | Hero Power | [https://open.kattis.com/problems/heropower](https://open.kattis.com/problems/heropower) |
| `icar` | iCar | [https://open.kattis.com/problems/icar](https://open.kattis.com/problems/icar) |
| `justaquiz` | Just a Quiz | [https://open.kattis.com/problems/justaquiz](https://open.kattis.com/problems/justaquiz) |

---

## Nordic Collegiate Programming Contest (2016)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1530](https://solved.ac/problems/archive/contest/1530)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202016](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202016)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `artwork` | Artwork | [https://open.kattis.com/problems/artwork](https://open.kattis.com/problems/artwork) |
| `autocorrect` | Bless You Autocorrect! | [https://open.kattis.com/problems/autocorrect](https://open.kattis.com/problems/autocorrect) |
| `cardhand` | Card Hand Sorting | [https://open.kattis.com/problems/cardhand](https://open.kattis.com/problems/cardhand) |
| `compass` | Jumbled Compass | [https://open.kattis.com/problems/compass](https://open.kattis.com/problems/compass) |
| `dogs` | Keeping the Dogs Apart | [https://open.kattis.com/problems/dogs](https://open.kattis.com/problems/dogs) |
| `exponial` | Exponial | [https://open.kattis.com/problems/exponial](https://open.kattis.com/problems/exponial) |
| `gamerank` | Game Rank | [https://open.kattis.com/problems/gamerank](https://open.kattis.com/problems/gamerank) |
| `interception` | Interception | [https://open.kattis.com/problems/interception](https://open.kattis.com/problems/interception) |
| `raffle` | Fleecing the Raffle | [https://open.kattis.com/problems/raffle](https://open.kattis.com/problems/raffle) |
| `stockbroker` | Daydreaming Stockbroker | [https://open.kattis.com/problems/stockbroker](https://open.kattis.com/problems/stockbroker) |
| `tower` | Highest Tower | [https://open.kattis.com/problems/tower](https://open.kattis.com/problems/tower) |

---

## Nordic Collegiate Programming Contest (2017)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1784](https://solved.ac/problems/archive/contest/1784)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202017](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202017)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `airportcoffee` | Airport Coffee | [https://open.kattis.com/problems/airportcoffee](https://open.kattis.com/problems/airportcoffee) |
| `bestrelayteam` | Best Relay Team | [https://open.kattis.com/problems/bestrelayteam](https://open.kattis.com/problems/bestrelayteam) |
| `compasscard` | Compass Card Sales | [https://open.kattis.com/problems/compasscard](https://open.kattis.com/problems/compasscard) |
| `distinctivecharacter` | Distinctive Character | [https://open.kattis.com/problems/distinctivecharacter](https://open.kattis.com/problems/distinctivecharacter) |
| `emptyingbaltic` | Emptying the Baltic | [https://open.kattis.com/problems/emptyingbaltic](https://open.kattis.com/problems/emptyingbaltic) |
| `fractaltree` | Fractal Tree | [https://open.kattis.com/problems/fractaltree](https://open.kattis.com/problems/fractaltree) |
| `gcpc` | Galactic Collegiate Programming Contest | [https://open.kattis.com/problems/gcpc](https://open.kattis.com/problems/gcpc) |
| `hubtown` | Hubtown | [https://open.kattis.com/problems/hubtown](https://open.kattis.com/problems/hubtown) |
| `importspaghetti` | Import Spaghetti | [https://open.kattis.com/problems/importspaghetti](https://open.kattis.com/problems/importspaghetti) |
| `judgingmoose` | Judging Moose | [https://open.kattis.com/problems/judgingmoose](https://open.kattis.com/problems/judgingmoose) |
| `kayaking` | Kayaking Trip | [https://open.kattis.com/problems/kayaking](https://open.kattis.com/problems/kayaking) |

---

## Nordic Collegiate Programming Contest (2018)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1938](https://solved.ac/problems/archive/contest/1938)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202018](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202018)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `altruisticamphibians` | Altruistic Amphibians | [https://open.kattis.com/problems/altruisticamphibians](https://open.kattis.com/problems/altruisticamphibians) |
| `babybites` | Baby Bites | [https://open.kattis.com/problems/babybites](https://open.kattis.com/problems/babybites) |
| `codecleanups` | Code Cleanups | [https://open.kattis.com/problems/codecleanups](https://open.kattis.com/problems/codecleanups) |
| `deliverydelays` | Delivery Delays | [https://open.kattis.com/problems/deliverydelays](https://open.kattis.com/problems/deliverydelays) |
| `explosion` | Explosion Exploit | [https://open.kattis.com/problems/explosion](https://open.kattis.com/problems/explosion) |
| `firingphaser` | Firing the Phaser | [https://open.kattis.com/problems/firingphaser](https://open.kattis.com/problems/firingphaser) |
| `gamescheduling` | Game Scheduling | [https://open.kattis.com/problems/gamescheduling](https://open.kattis.com/problems/gamescheduling) |
| `houselawn` | House Lawn | [https://open.kattis.com/problems/houselawn](https://open.kattis.com/problems/houselawn) |
| `intergalacticbidding` | Intergalactic Bidding | [https://open.kattis.com/problems/intergalacticbidding](https://open.kattis.com/problems/intergalacticbidding) |
| `jumbledstring` | Jumbled String | [https://open.kattis.com/problems/jumbledstring](https://open.kattis.com/problems/jumbledstring) |
| `kingscolors` | King's Colors | [https://open.kattis.com/problems/kingscolors](https://open.kattis.com/problems/kingscolors) |

---

## Nordic Collegiate Programming Contest (2019)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2116](https://solved.ac/problems/archive/contest/2116)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202019](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202019)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `alphabetanimals` | Alphabet Animals | [https://open.kattis.com/problems/alphabetanimals](https://open.kattis.com/problems/alphabetanimals) |
| `buildingboundaries` | Building Boundaries | [https://open.kattis.com/problems/buildingboundaries](https://open.kattis.com/problems/buildingboundaries) |
| `cocoacoalition` | Cocoa Coalition | [https://open.kattis.com/problems/cocoacoalition](https://open.kattis.com/problems/cocoacoalition) |
| `dungeondawdler` | Dungeon Dawdler | [https://open.kattis.com/problems/dungeondawdler](https://open.kattis.com/problems/dungeondawdler) |
| `eenymeeny` | Eeny Meeny | [https://open.kattis.com/problems/eenymeeny](https://open.kattis.com/problems/eenymeeny) |
| `flowfinder` | Flow Finder | [https://open.kattis.com/problems/flowfinder](https://open.kattis.com/problems/flowfinder) |
| `gameofgnomes` | Game of Gnomes | [https://open.kattis.com/problems/gameofgnomes](https://open.kattis.com/problems/gameofgnomes) |
| `hothike` | Hot Hike | [https://open.kattis.com/problems/hothike](https://open.kattis.com/problems/hothike) |
| `incrementalinduction` | Incremental Induction | [https://open.kattis.com/problems/incrementalinduction](https://open.kattis.com/problems/incrementalinduction) |
| `jealousyoungsters` | Jealous Youngsters | [https://open.kattis.com/problems/jealousyoungsters](https://open.kattis.com/problems/jealousyoungsters) |
| `keepitcool` | Keep it Cool | [https://open.kattis.com/problems/keepitcool](https://open.kattis.com/problems/keepitcool) |

---

## Nordic Collegiate Programming Contest (2020)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2447](https://solved.ac/problems/archive/contest/2447)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202020](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202020)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `arrayofdiscord` | Array of Discord | [https://open.kattis.com/problems/arrayofdiscord](https://open.kattis.com/problems/arrayofdiscord) |
| `bigbrother` | Big Brother | [https://open.kattis.com/problems/bigbrother](https://open.kattis.com/problems/bigbrother) |
| `coinstacks` | Coin Stacks | [https://open.kattis.com/problems/coinstacks](https://open.kattis.com/problems/coinstacks) |
| `damsindistress` | Dams in Distress | [https://open.kattis.com/problems/damsindistress](https://open.kattis.com/problems/damsindistress) |
| `exhaustiveexperiment` | Exhaustive Experiment | [https://open.kattis.com/problems/exhaustiveexperiment](https://open.kattis.com/problems/exhaustiveexperiment) |
| `filmcritics` | Film Critics | [https://open.kattis.com/problems/filmcritics](https://open.kattis.com/problems/filmcritics) |
| `gigcombinatorics` | Gig Combinatorics | [https://open.kattis.com/problems/gigcombinatorics](https://open.kattis.com/problems/gigcombinatorics) |
| `hiringfiring` | Hiring and Firing | [https://open.kattis.com/problems/hiringfiring](https://open.kattis.com/problems/hiringfiring) |
| `infectionestimation` | Infection Estimation | [https://open.kattis.com/problems/infectionestimation](https://open.kattis.com/problems/infectionestimation) |
| `joiningflows` | Joining Flows | [https://open.kattis.com/problems/joiningflows](https://open.kattis.com/problems/joiningflows) |
| `keepcalmandcarryoff` | Keep Calm And Carry Off | [https://open.kattis.com/problems/keepcalmandcarryoff](https://open.kattis.com/problems/keepcalmandcarryoff) |
| `languagesurvey` | Language Survey | [https://open.kattis.com/problems/languagesurvey](https://open.kattis.com/problems/languagesurvey) |
| `methodicmultiplication` | Methodic Multiplication | [https://open.kattis.com/problems/methodicmultiplication](https://open.kattis.com/problems/methodicmultiplication) |

---

## Nordic Collegiate Programming Contest (2021)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2816](https://solved.ac/problems/archive/contest/2816)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202021](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202021)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `antennaanalysis` | Antenna Analysis | [https://open.kattis.com/problems/antennaanalysis](https://open.kattis.com/problems/antennaanalysis) |
| `breakingbars` | Breaking Bars | [https://open.kattis.com/problems/breakingbars](https://open.kattis.com/problems/breakingbars) |
| `customscontrols` | Customs Controls | [https://open.kattis.com/problems/customscontrols](https://open.kattis.com/problems/customscontrols) |
| `deceptivedirections` | Deceptive Directions | [https://open.kattis.com/problems/deceptivedirections](https://open.kattis.com/problems/deceptivedirections) |
| `eavesdropperevasion` | Eavesdropper Evasion | [https://open.kattis.com/problems/eavesdropperevasion](https://open.kattis.com/problems/eavesdropperevasion) |
| `fortunefromfolly` | Fortune From Folly | [https://open.kattis.com/problems/fortunefromfolly](https://open.kattis.com/problems/fortunefromfolly) |
| `grazedgrains` | Grazed Grains | [https://open.kattis.com/problems/grazedgrains](https://open.kattis.com/problems/grazedgrains) |
| `hiringhelp` | Hiring Help | [https://open.kattis.com/problems/hiringhelp](https://open.kattis.com/problems/hiringhelp) |
| `intactintervals` | Intact Intervals | [https://open.kattis.com/problems/intactintervals](https://open.kattis.com/problems/intactintervals) |
| `jointjogjam` | Joint Jog Jam | [https://open.kattis.com/problems/jointjogjam](https://open.kattis.com/problems/jointjogjam) |
| `knotknowledge` | Knot Knowledge | [https://open.kattis.com/problems/knotknowledge](https://open.kattis.com/problems/knotknowledge) |
| `locustlocus` | Locust Locus | [https://open.kattis.com/problems/locustlocus](https://open.kattis.com/problems/locustlocus) |
| `marvelousmarathon` | Marvelous Marathon | [https://open.kattis.com/problems/marvelousmarathon](https://open.kattis.com/problems/marvelousmarathon) |

---

## Nordic Collegiate Programming Contest (2022)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/3224](https://solved.ac/problems/archive/contest/3224)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202022](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202022)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `acearbiter` | Ace Arbiter | [https://open.kattis.com/problems/acearbiter](https://open.kattis.com/problems/acearbiter) |
| `berrybattle` | Berry Battle | [https://open.kattis.com/problems/berrybattle](https://open.kattis.com/problems/berrybattle) |
| `coffeecupcombo` | Coffee Cup Combo | [https://open.kattis.com/problems/coffeecupcombo](https://open.kattis.com/problems/coffeecupcombo) |
| `discdistrict` | Disc District | [https://open.kattis.com/problems/discdistrict](https://open.kattis.com/problems/discdistrict) |
| `enigmaticenumeration` | Enigmatic Enumeration | [https://open.kattis.com/problems/enigmaticenumeration](https://open.kattis.com/problems/enigmaticenumeration) |
| `foreignfootball` | Foreign Football | [https://open.kattis.com/problems/foreignfootball](https://open.kattis.com/problems/foreignfootball) |
| `graduationguarantee` | Graduation Guarantee | [https://open.kattis.com/problems/graduationguarantee](https://open.kattis.com/problems/graduationguarantee) |
| `highesthill` | Highest Hill | [https://open.kattis.com/problems/highesthill](https://open.kattis.com/problems/highesthill) |
| `icyitinerary` | Icy Itinerary | [https://open.kattis.com/problems/icyitinerary](https://open.kattis.com/problems/icyitinerary) |
| `junkjourney` | Junk Journey | [https://open.kattis.com/problems/junkjourney](https://open.kattis.com/problems/junkjourney) |
| `keyboardqueries` | Keyboard Queries | [https://open.kattis.com/problems/keyboardqueries](https://open.kattis.com/problems/keyboardqueries) |

---

## Nordic Collegiate Programming Contest (2023)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4004](https://solved.ac/problems/archive/contest/4004)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202023](https://open.kattis.com/problem-sources/Nordic%20Collegiate%20Programming%20Contest%20%28NCPC%29%202023)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `aperiodicappointments` | Aperiodic Appointments | [https://open.kattis.com/problems/aperiodicappointments](https://open.kattis.com/problems/aperiodicappointments) |
| `berrybattle2` | Berry Battle 2 | [https://open.kattis.com/problems/berrybattle2](https://open.kattis.com/problems/berrybattle2) |
| `convertingromans` | Converting Romans | [https://open.kattis.com/problems/convertingromans](https://open.kattis.com/problems/convertingromans) |
| `diehard` | Die Hard | [https://open.kattis.com/problems/diehard](https://open.kattis.com/problems/diehard) |
| `electroniccomponents` | Electronic Components | [https://open.kattis.com/problems/electroniccomponents](https://open.kattis.com/problems/electroniccomponents) |
| `factorfulltree` | Factor-Full Tree | [https://open.kattis.com/problems/factorfulltree](https://open.kattis.com/problems/factorfulltree) |
| `groupsofstrangers` | Groups of Strangers | [https://open.kattis.com/problems/groupsofstrangers](https://open.kattis.com/problems/groupsofstrangers) |
| `heroesofvelmar` | Heroes of Velmar | [https://open.kattis.com/problems/heroesofvelmar](https://open.kattis.com/problems/heroesofvelmar) |
| `intertwined` | Intertwined | [https://open.kattis.com/problems/intertwined](https://open.kattis.com/problems/intertwined) |
| `jamboree` | Jamboree | [https://open.kattis.com/problems/jamboree](https://open.kattis.com/problems/jamboree) |
| `karlcoder` | Karl Coder | [https://open.kattis.com/problems/karlcoder](https://open.kattis.com/problems/karlcoder) |

---

## Northwestern Europe Regional Contest (2006)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/55](https://solved.ac/problems/archive/contest/55)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Northwestern%20Europe%20Programming%20Contest%20%28NWERC%29%202006](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Programming%20Contest%20%28NWERC%29%202006)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `airport` | Airport | **UNMATCHED** |
| `bookcase` | Bookcase | [https://open.kattis.com/problems/bookcase](https://open.kattis.com/problems/bookcase) |
| `corrector` | Corrector | **UNMATCHED** |
| `notebook` | Notebook | **UNMATCHED** |
| `pie` | Pie | [https://open.kattis.com/problems/pie](https://open.kattis.com/problems/pie) |
| `primepath` | Prime Path | [https://open.kattis.com/problems/primepath](https://open.kattis.com/problems/primepath) |
| `printerqueue` | Printer Queue | **UNMATCHED** |
| `setstack` | Setstack | [https://open.kattis.com/problems/setstack](https://open.kattis.com/problems/setstack) |
| `sudoku` | Sudoku | [https://open.kattis.com/problems/sudoku](https://open.kattis.com/problems/sudoku) |
| `ticket` | Ticket | [https://open.kattis.com/problems/tickettoride](https://open.kattis.com/problems/tickettoride) |

---

## Northwestern Europe Regional Contest (2007)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/54](https://solved.ac/problems/archive/contest/54)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Northwestern%20European%20Programming%20Contest%20%28NWERC%29%202007](https://open.kattis.com/problem-sources/Northwestern%20European%20Programming%20Contest%20%28NWERC%29%202007)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `assemble` | Assemble | **UNMATCHED** |
| `containers` | Containers | **UNMATCHED** |
| `dorm` | Dorm | **UNMATCHED** |
| `escape` | Escape | [https://open.kattis.com/problems/enemyterritory](https://open.kattis.com/problems/enemyterritory) |
| `flight` | Flight | [https://open.kattis.com/problems/flightsafety](https://open.kattis.com/problems/flightsafety) |
| `obfuscation` | Obfuscation | [https://open.kattis.com/problems/obfuscation](https://open.kattis.com/problems/obfuscation) |
| `penguins` | Penguins | **UNMATCHED** |
| `summits` | Summits | **UNMATCHED** |
| `towerparking` | Tower Parking | **UNMATCHED** |
| `walk` | Walk | [https://open.kattis.com/problems/walk](https://open.kattis.com/problems/walk) |

---

## Northwestern Europe Regional Contest (2008)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/53](https://solved.ac/problems/archive/contest/53)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Northwestern%20Europe%20Contest%20%28NWERC%29%202008](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Contest%20%28NWERC%29%202008)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `a` | Equilibrium Mobile | [https://open.kattis.com/problems/equilibrium](https://open.kattis.com/problems/equilibrium) |
| `b` | Proving Equivalences | [https://open.kattis.com/problems/equivalences](https://open.kattis.com/problems/equivalences) |
| `c` | Cat vs. Dog | [https://open.kattis.com/problems/catvsdog](https://open.kattis.com/problems/catvsdog) |
| `d` | Disgruntled Judge | [https://open.kattis.com/problems/disgruntledjudge](https://open.kattis.com/problems/disgruntledjudge) |
| `e` | Easy Climb | [https://open.kattis.com/problems/easyclimb](https://open.kattis.com/problems/easyclimb) |
| `f` | Sculpture | [https://open.kattis.com/problems/sculpture](https://open.kattis.com/problems/sculpture) |
| `h` | Matchsticks | [https://open.kattis.com/problems/matchsticks](https://open.kattis.com/problems/matchsticks) |
| `i` | White Water Rafting | [https://open.kattis.com/problems/rafting](https://open.kattis.com/problems/rafting) |
| `j` | Shuffle | [https://open.kattis.com/problems/shuffle](https://open.kattis.com/problems/shuffle) |
| `k` | Videopoker | [https://open.kattis.com/problems/videopoker](https://open.kattis.com/problems/videopoker) |

---

## Northwestern Europe Regional Contest (2009)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/52](https://solved.ac/problems/archive/contest/52)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Northwestern%20Europe%20Contest%20%28NWERC%29%202009](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Contest%20%28NWERC%29%202009)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `AnIndustrialSpy` | An Industrial Spy | [https://open.kattis.com/problems/industrialspy](https://open.kattis.com/problems/industrialspy) |
| `CommonSubexpressionElimination` | Common Subexpression Elimination | [https://open.kattis.com/problems/subexpression](https://open.kattis.com/problems/subexpression) |
| `DivisibleSubsequences` | Divisible Subsequences | [https://open.kattis.com/problems/divisible](https://open.kattis.com/problems/divisible) |
| `Fractal` | Fractal | [https://open.kattis.com/problems/fractal2](https://open.kattis.com/problems/fractal2) |
| `MountainRoad` | Mountain Road | [https://open.kattis.com/problems/mountainroad](https://open.kattis.com/problems/mountainroad) |
| `Moving` | Moving | [https://open.kattis.com/problems/nuremberg](https://open.kattis.com/problems/nuremberg) |
| `RoomAssignments` | Room Assignments | [https://open.kattis.com/problems/roomassignments](https://open.kattis.com/problems/roomassignments) |
| `Settlers` | Settlers | [https://open.kattis.com/problems/settlers2](https://open.kattis.com/problems/settlers2) |
| `SimplePolygon` | Simple Polygon | [https://open.kattis.com/problems/simplepolygon](https://open.kattis.com/problems/simplepolygon) |
| `Wormholes` | Wormholes | [https://open.kattis.com/problems/wormholes2](https://open.kattis.com/problems/wormholes2) |

---

## Northwestern Europe Regional Contest (2010)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/51](https://solved.ac/problems/archive/contest/51)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202010](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202010)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | Fair Division | [https://open.kattis.com/problems/fairdivision](https://open.kattis.com/problems/fairdivision) |
| `B` | Free Goodies | [https://open.kattis.com/problems/freegoodies](https://open.kattis.com/problems/freegoodies) |
| `C` | High Score | [https://open.kattis.com/problems/highscore](https://open.kattis.com/problems/highscore) |
| `D` | Hill Driving | [https://open.kattis.com/problems/hilldriving](https://open.kattis.com/problems/hilldriving) |
| `E` | Rankings | **UNMATCHED** |
| `F` | Risk | [https://open.kattis.com/problems/risk](https://open.kattis.com/problems/risk) |
| `G` | Selling Land | [https://open.kattis.com/problems/sellingland](https://open.kattis.com/problems/sellingland) |
| `H` | Stock Prices | [https://open.kattis.com/problems/stockprices](https://open.kattis.com/problems/stockprices) |
| `I` | Telephone Network | **UNMATCHED** |
| `J` | Wormly | **UNMATCHED** |

---

## Northwestern Europe Regional Contest (2011)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/50](https://solved.ac/problems/archive/contest/50)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202011](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202011)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | Binomial coefficients | **UNMATCHED** |
| `B` | Bird tree | **UNMATCHED** |
| `C` | Movie collection | [https://open.kattis.com/problems/moviecollection](https://open.kattis.com/problems/moviecollection) |
| `D` | Piece it together | [https://open.kattis.com/problems/pieceittogether](https://open.kattis.com/problems/pieceittogether) |
| `E` | Please, go first | [https://open.kattis.com/problems/pleasegofirst](https://open.kattis.com/problems/pleasegofirst) |
| `F` | Pool construction | **UNMATCHED** |
| `G` | Smoking gun | **UNMATCHED** |
| `H` | Tichu | **UNMATCHED** |
| `I` | Tracking RFIDs | **UNMATCHED** |
| `J` | Train delays | [https://open.kattis.com/problems/traindelays](https://open.kattis.com/problems/traindelays) |

---

## Northwestern Europe Regional Contest (2012)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/49](https://solved.ac/problems/archive/contest/49)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | Admiral | **UNMATCHED** |
| `B` | Beer Pressure | **UNMATCHED** |
| `C` | Cycling | **UNMATCHED** |
| `D` | Digital Clock | **UNMATCHED** |
| `E` | Edge Case | **UNMATCHED** |
| `F` | Foul Play | **UNMATCHED** |
| `G` | Guards | **UNMATCHED** |
| `H` | Hip To Be Square | **UNMATCHED** |
| `I` | Idol | **UNMATCHED** |
| `J` | Joint Venture | **UNMATCHED** |
| `K` | Key Insight | **UNMATCHED** |

---

## Northwestern Europe Regional Contest (2013)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1188](https://solved.ac/problems/archive/contest/1188)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `Absurdistan_Roads` | Absurdistan Roads | **UNMATCHED** |
| `Battle_for_Silver` | Battle for Silver | **UNMATCHED** |
| `Card_Trick` | Card Trick | **UNMATCHED** |
| `Diagrams_and_Tableaux` | Diagrams And Tableaux | **UNMATCHED** |
| `Exponential_Towers` | Exponential Towers | **UNMATCHED** |
| `First_Date` | First Date | **UNMATCHED** |
| `Grachten` | Grachten | **UNMATCHED** |
| `Highway_of_the_Future` | Highway of the Future | **UNMATCHED** |
| `Infix_to_Prefix` | Infix to Prefix | **UNMATCHED** |
| `Jingle_Balls` | Jingle Balls | **UNMATCHED** |

---

## Northwestern Europe Regional Contest (2014)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1312](https://solved.ac/problems/archive/contest/1312)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202014](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202014)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `aroundthetrack` | Around the Track | [https://open.kattis.com/problems/aroundthetrack](https://open.kattis.com/problems/aroundthetrack) |
| `bikingduck` | Biking Duck | [https://open.kattis.com/problems/bikingduck](https://open.kattis.com/problems/bikingduck) |
| `centsavings` | Cent Savings | [https://open.kattis.com/problems/centsavings](https://open.kattis.com/problems/centsavings) |
| `digicomp2` | Digi Comp II | [https://open.kattis.com/problems/digicomp2](https://open.kattis.com/problems/digicomp2) |
| `euclideantsp` | Euclidean TSP | [https://open.kattis.com/problems/euclideantsp](https://open.kattis.com/problems/euclideantsp) |
| `findinglines` | Finding Lines | [https://open.kattis.com/problems/findinglines](https://open.kattis.com/problems/findinglines) |
| `gathering` | Gathering | [https://open.kattis.com/problems/gathering](https://open.kattis.com/problems/gathering) |
| `hyacinth` | Hyacinth | [https://open.kattis.com/problems/hyacinth](https://open.kattis.com/problems/hyacinth) |
| `indoorienteering` | Indoorienteering | [https://open.kattis.com/problems/indoorienteering](https://open.kattis.com/problems/indoorienteering) |
| `judging` | Judging Troubles | [https://open.kattis.com/problems/judging](https://open.kattis.com/problems/judging) |
| `knapsackcollection` | Knapsack Collection | [https://open.kattis.com/problems/knapsackcollection](https://open.kattis.com/problems/knapsackcollection) |

---

## Northwestern Europe Regional Contest (2015)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1431](https://solved.ac/problems/archive/contest/1431)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202015](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202015)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `camels` | Guessing Camels | [https://open.kattis.com/problems/camels](https://open.kattis.com/problems/camels) |
| `communication` | Jumbled Communication | [https://open.kattis.com/problems/communication](https://open.kattis.com/problems/communication) |
| `debugging` | Debugging | [https://open.kattis.com/problems/debugging](https://open.kattis.com/problems/debugging) |
| `elementarymath` | Elementary Math | [https://open.kattis.com/problems/elementarymath](https://open.kattis.com/problems/elementarymath) |
| `flight` | Flight Plan Evaluation | [https://open.kattis.com/problems/flightplan](https://open.kattis.com/problems/flightplan) |
| `holeinone` | Hole in One | [https://open.kattis.com/problems/holeinone](https://open.kattis.com/problems/holeinone) |
| `kitchen` | Kitchen Combinatorics | [https://open.kattis.com/problems/kitchencombinatorics](https://open.kattis.com/problems/kitchencombinatorics) |
| `maptiles` | Identifying Map Tiles | [https://open.kattis.com/problems/maptiles2](https://open.kattis.com/problems/maptiles2) |
| `pipes` | Cleaning Pipes | [https://open.kattis.com/problems/cleaningpipes](https://open.kattis.com/problems/cleaningpipes) |
| `productivity` | Better Productivity | [https://open.kattis.com/problems/productivity](https://open.kattis.com/problems/productivity) |
| `workstations` | Assigning Workstations | [https://open.kattis.com/problems/workstations](https://open.kattis.com/problems/workstations) |

---

## Northwestern Europe Regional Contest (2016)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1578](https://solved.ac/problems/archive/contest/1578)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202016](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202016)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `arranging_hat` | Arranging Hat | [https://open.kattis.com/problems/arranginghat](https://open.kattis.com/problems/arranginghat) |
| `british_menu` | British Menu | [https://open.kattis.com/problems/britishmenu](https://open.kattis.com/problems/britishmenu) |
| `careful_ascent` | Careful Ascent | [https://open.kattis.com/problems/carefulascent](https://open.kattis.com/problems/carefulascent) |
| `driving_in_optimistan` | Driving in Optimistan | [https://open.kattis.com/problems/optimistan](https://open.kattis.com/problems/optimistan) |
| `exam_redistribution` | Exam Redistribution | [https://open.kattis.com/problems/redistribution](https://open.kattis.com/problems/redistribution) |
| `free_weights` | Free Weights | [https://open.kattis.com/problems/freeweights](https://open.kattis.com/problems/freeweights) |
| `gotta_nudge_em_all` | Gotta Nudge ’Em All | [https://open.kattis.com/problems/gottanudge](https://open.kattis.com/problems/gottanudge) |
| `hamiltonian_hypercube` | Hamiltonian Hypercube | [https://open.kattis.com/problems/hypercube](https://open.kattis.com/problems/hypercube) |
| `iron_and_coal` | Iron and Coal | [https://open.kattis.com/problems/ironcoal](https://open.kattis.com/problems/ironcoal) |
| `jupiter_orbiter` | Jupiter Orbiter | [https://open.kattis.com/problems/jupiter](https://open.kattis.com/problems/jupiter) |
| `kiwi_trees` | Kiwi Trees | [https://open.kattis.com/problems/kiwitrees](https://open.kattis.com/problems/kiwitrees) |

---

## Northwestern Europe Regional Contest (2017)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1852](https://solved.ac/problems/archive/contest/1852)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202017](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202017)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `ascendingphoto` | Ascending Photo | [https://open.kattis.com/problems/ascendingphoto](https://open.kattis.com/problems/ascendingphoto) |
| `boss` | Boss Battle | [https://open.kattis.com/problems/bossbattle](https://open.kattis.com/problems/bossbattle) |
| `connect` | Connect the Dots | [https://open.kattis.com/problems/connectdots](https://open.kattis.com/problems/connectdots) |
| `dunglish` | Dunglish | [https://open.kattis.com/problems/dunglish](https://open.kattis.com/problems/dunglish) |
| `englishrestaurant` | English Restaurant | [https://open.kattis.com/problems/englishrestaurant](https://open.kattis.com/problems/englishrestaurant) |
| `factorfree` | Factor-Free Tree | [https://open.kattis.com/problems/factorfree](https://open.kattis.com/problems/factorfree) |
| `glyphrecognition` | Glyph Recognition | [https://open.kattis.com/problems/glyphrecognition](https://open.kattis.com/problems/glyphrecognition) |
| `highscore` | High Score | [https://open.kattis.com/problems/highscore2](https://open.kattis.com/problems/highscore2) |
| `installingapps` | Installing Apps | [https://open.kattis.com/problems/installingapps](https://open.kattis.com/problems/installingapps) |
| `jugglingtroupe` | Juggling Troupe | [https://open.kattis.com/problems/jugglingtroupe](https://open.kattis.com/problems/jugglingtroupe) |
| `knockout` | Knockout Tournament | [https://open.kattis.com/problems/knockout](https://open.kattis.com/problems/knockout) |

---

## Northwestern Europe Regional Contest (2018)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1967](https://solved.ac/problems/archive/contest/1967)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202018](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202018)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `accesspoints` | Access Points | [https://open.kattis.com/problems/accesspoints](https://open.kattis.com/problems/accesspoints) |
| `brexitnegotiations` | Brexit Negotiations | [https://open.kattis.com/problems/brexitnegotiations](https://open.kattis.com/problems/brexitnegotiations) |
| `circuitdesign` | Circuit Board Design | [https://open.kattis.com/problems/circuitdesign](https://open.kattis.com/problems/circuitdesign) |
| `datepickup` | Date Pickup | [https://open.kattis.com/problems/datepickup](https://open.kattis.com/problems/datepickup) |
| `equality` | Equality Control | [https://open.kattis.com/problems/equality](https://open.kattis.com/problems/equality) |
| `fastestspeedrun` | Fastest Speedrun | [https://open.kattis.com/problems/fastestspeedrun](https://open.kattis.com/problems/fastestspeedrun) |
| `gamedesign` | Game Design | [https://open.kattis.com/problems/gamedesign](https://open.kattis.com/problems/gamedesign) |
| `harddrive` | Hard Drive | [https://open.kattis.com/problems/harddrive](https://open.kattis.com/problems/harddrive) |
| `inflation` | Inflation | [https://open.kattis.com/problems/inflation](https://open.kattis.com/problems/inflation) |
| `jinxedbetting` | Jinxed Betting | [https://open.kattis.com/problems/jinxedbetting](https://open.kattis.com/problems/jinxedbetting) |
| `kleptography` | Kleptography | [https://open.kattis.com/problems/kleptography](https://open.kattis.com/problems/kleptography) |

---

## Northwestern Europe Regional Contest (2019)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2121](https://solved.ac/problems/archive/contest/2121)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202019](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202019)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `averagerank` | Average Rank | [https://open.kattis.com/problems/averagerank](https://open.kattis.com/problems/averagerank) |
| `balancedcut` | Balanced Cut | [https://open.kattis.com/problems/balancedcut](https://open.kattis.com/problems/balancedcut) |
| `canvasline` | Canvas Line | [https://open.kattis.com/problems/canvasline](https://open.kattis.com/problems/canvasline) |
| `disposableswitches` | Disposable Switches | [https://open.kattis.com/problems/disposableswitches](https://open.kattis.com/problems/disposableswitches) |
| `expeditiouscubing` | Expeditious Cubing | [https://open.kattis.com/problems/expeditiouscubing](https://open.kattis.com/problems/expeditiouscubing) |
| `firetrucksarered` | Firetrucks Are Red | [https://open.kattis.com/problems/firetrucksarered](https://open.kattis.com/problems/firetrucksarered) |
| `gnollhypothesis` | Gnoll Hypothesis | [https://open.kattis.com/problems/gnollhypothesis](https://open.kattis.com/problems/gnollhypothesis) |
| `heightprofile` | Height Profile | [https://open.kattis.com/problems/heightprofile](https://open.kattis.com/problems/heightprofile) |
| `inverteddeck` | Inverted Deck | [https://open.kattis.com/problems/inverteddeck](https://open.kattis.com/problems/inverteddeck) |
| `jackdawsandcrows` | Jackdaws And Crows | [https://open.kattis.com/problems/jackdawsandcrows](https://open.kattis.com/problems/jackdawsandcrows) |
| `kitesurfing` | Kitesurfing | [https://open.kattis.com/problems/kitesurfing](https://open.kattis.com/problems/kitesurfing) |

---

## Northwestern Europe Regional Contest (2020)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2488](https://solved.ac/problems/archive/contest/2488)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202020](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202020)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `atomicenergy` | Atomic Energy | [https://open.kattis.com/problems/atomicenergy](https://open.kattis.com/problems/atomicenergy) |
| `bulldozer` | Bulldozer | [https://open.kattis.com/problems/bulldozer](https://open.kattis.com/problems/bulldozer) |
| `conteststruggles` | Contest Struggles | [https://open.kattis.com/problems/conteststruggles](https://open.kattis.com/problems/conteststruggles) |
| `dragonballs` | Dragon Balls | [https://open.kattis.com/problems/dragonballs](https://open.kattis.com/problems/dragonballs) |
| `endgame` | Endgame | [https://open.kattis.com/problems/endgame](https://open.kattis.com/problems/endgame) |
| `flightcollision` | Flight Collision | [https://open.kattis.com/problems/flightcollision](https://open.kattis.com/problems/flightcollision) |
| `greatexpectations` | Great Expectations | [https://open.kattis.com/problems/greatexpectations](https://open.kattis.com/problems/greatexpectations) |
| `hotsprings` | Hot Springs | [https://open.kattis.com/problems/hotsprings](https://open.kattis.com/problems/hotsprings) |
| `islandtour` | Island Tour | [https://open.kattis.com/problems/islandtour](https://open.kattis.com/problems/islandtour) |
| `jointexcavation` | Joint Excavation | [https://open.kattis.com/problems/jointexcavation](https://open.kattis.com/problems/jointexcavation) |
| `keyboardd` | Keyboardd | [https://open.kattis.com/problems/keyboardd](https://open.kattis.com/problems/keyboardd) |

---

## Northwestern Europe Regional Contest (2021)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2887](https://solved.ac/problems/archive/contest/2887)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202021](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202021)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `accessdenied` | Access Denied | [https://open.kattis.com/problems/accessdenied](https://open.kattis.com/problems/accessdenied) |
| `boredombuster` | Boredom Buster | [https://open.kattis.com/problems/boredombuster](https://open.kattis.com/problems/boredombuster) |
| `cuttingedge` | Cutting Edge | [https://open.kattis.com/problems/cuttingedge](https://open.kattis.com/problems/cuttingedge) |
| `dysoncircle` | Dyson Circle | [https://open.kattis.com/problems/dysoncircle](https://open.kattis.com/problems/dysoncircle) |
| `exchangestudents` | Exchange Students | [https://open.kattis.com/problems/exchangestudents](https://open.kattis.com/problems/exchangestudents) |
| `flatlandolympics` | Flatland Olympics | [https://open.kattis.com/problems/flatlandolympics](https://open.kattis.com/problems/flatlandolympics) |
| `glossaryarrangement` | Glossary Arrangement | [https://open.kattis.com/problems/glossaryarrangement](https://open.kattis.com/problems/glossaryarrangement) |
| `heatingup` | Heating Up | [https://open.kattis.com/problems/heatingup](https://open.kattis.com/problems/heatingup) |
| `ixthproblem` | \texttt{IX}th Problem | [https://open.kattis.com/problems/ixthproblem](https://open.kattis.com/problems/ixthproblem) |
| `jetset` | Jet Set | [https://open.kattis.com/problems/jetset](https://open.kattis.com/problems/jetset) |
| `knitpicking` | Knitpicking | [https://open.kattis.com/problems/knitpicking](https://open.kattis.com/problems/knitpicking) |
| `luckyshirt` | Lucky Shirt | [https://open.kattis.com/problems/luckyshirt](https://open.kattis.com/problems/luckyshirt) |

---

## Northwestern Europe Regional Contest (2022)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/3237](https://solved.ac/problems/archive/contest/3237)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202022](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202022)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `alternatingalgorithm` | Alternating Algorithm | [https://open.kattis.com/problems/alternatingalgorithm](https://open.kattis.com/problems/alternatingalgorithm) |
| `bottleflip` | Bottle Flip | [https://open.kattis.com/problems/bottleflip](https://open.kattis.com/problems/bottleflip) |
| `circularcaramelcookie` | Circular Caramel Cookie | [https://open.kattis.com/problems/circularcaramelcookie](https://open.kattis.com/problems/circularcaramelcookie) |
| `delftdistance` | Delft Distance | [https://open.kattis.com/problems/delftdistance](https://open.kattis.com/problems/delftdistance) |
| `eta` | ETA | [https://open.kattis.com/problems/eta](https://open.kattis.com/problems/eta) |
| `fasterthanlight` | Faster Than Light | [https://open.kattis.com/problems/fasterthanlight](https://open.kattis.com/problems/fasterthanlight) |
| `goingincircles` | Going in Circles | [https://open.kattis.com/problems/goingincircles](https://open.kattis.com/problems/goingincircles) |
| `highqualitytree` | High-quality Tree | [https://open.kattis.com/problems/highqualitytree](https://open.kattis.com/problems/highqualitytree) |
| `interviewquestion` | Interview Question | [https://open.kattis.com/problems/interviewquestion](https://open.kattis.com/problems/interviewquestion) |
| `justiceserved` | Justice Served | [https://open.kattis.com/problems/justiceserved](https://open.kattis.com/problems/justiceserved) |
| `kebabpizza` | Kebab Pizza | [https://open.kattis.com/problems/kebabpizza](https://open.kattis.com/problems/kebabpizza) |
| `lastguess` | Last Guess | [https://open.kattis.com/problems/lastguess](https://open.kattis.com/problems/lastguess) |

---

## Northwestern Europe Regional Contest (2023)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4062](https://solved.ac/problems/archive/contest/4062)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202023](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202023)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `arrangingadapters` | Arranging Adapters | [https://open.kattis.com/problems/arrangingadapters](https://open.kattis.com/problems/arrangingadapters) |
| `brickwork` | Brickwork | [https://open.kattis.com/problems/brickwork](https://open.kattis.com/problems/brickwork) |
| `chairdance` | Chair Dance | [https://open.kattis.com/problems/chairdance](https://open.kattis.com/problems/chairdance) |
| `datepicker` | Date Picker | [https://open.kattis.com/problems/datepicker](https://open.kattis.com/problems/datepicker) |
| `exponentiation` | Exponentiation | [https://open.kattis.com/problems/exponentiation](https://open.kattis.com/problems/exponentiation) |
| `fixingfractions` | Fixing Fractions | [https://open.kattis.com/problems/fixingfractions](https://open.kattis.com/problems/fixingfractions) |
| `galaxyquest` | Galaxy Quest | [https://open.kattis.com/problems/galaxyquest2](https://open.kattis.com/problems/galaxyquest2) |
| `higherarithmetic` | Higher Arithmetic | [https://open.kattis.com/problems/higherarithmetic](https://open.kattis.com/problems/higherarithmetic) |
| `isolatedisland` | Isolated Island | [https://open.kattis.com/problems/isolatedisland](https://open.kattis.com/problems/isolatedisland) |
| `joggingtour` | Jogging Tour | [https://open.kattis.com/problems/joggingtour](https://open.kattis.com/problems/joggingtour) |
| `klompendans` | Klompendans | [https://open.kattis.com/problems/klompendans](https://open.kattis.com/problems/klompendans) |
| `lateraldamage` | Lateral Damage | [https://open.kattis.com/problems/lateraldamage](https://open.kattis.com/problems/lateraldamage) |

---

## Northwestern Europe Regional Contest (2024)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4356](https://solved.ac/problems/archive/contest/4356)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202024](https://open.kattis.com/problem-sources/Northwestern%20Europe%20Regional%20Contest%20%28NWERC%29%202024)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `alphabeticalaristocrats` | Alphabetical Aristocrats | [https://open.kattis.com/problems/alphabeticalaristocrats](https://open.kattis.com/problems/alphabeticalaristocrats) |
| `binarysearch` | Binary Search | [https://open.kattis.com/problems/binarysearch](https://open.kattis.com/problems/binarysearch) |
| `connectfive` | Connect Five | [https://open.kattis.com/problems/connectfive](https://open.kattis.com/problems/connectfive) |
| `dutchdemocracy` | Dutch Democracy | [https://open.kattis.com/problems/dutchdemocracy](https://open.kattis.com/problems/dutchdemocracy) |
| `evolvingetymology` | Evolving Etymology | [https://open.kattis.com/problems/evolvingetymology](https://open.kattis.com/problems/evolvingetymology) |
| `flowingfountain` | Flowing Fountain | [https://open.kattis.com/problems/flowingfountain](https://open.kattis.com/problems/flowingfountain) |
| `gluedgrid` | Glued Grid | [https://open.kattis.com/problems/gluedgrid](https://open.kattis.com/problems/gluedgrid) |
| `hashcollision` | Hash Collision | [https://open.kattis.com/problems/hashcollision](https://open.kattis.com/problems/hashcollision) |
| `itsakindofmagic` | It | [https://open.kattis.com/problems/itsakindofmagic](https://open.kattis.com/problems/itsakindofmagic) |
| `jibjob` | Jib Job | [https://open.kattis.com/problems/jibjob](https://open.kattis.com/problems/jibjob) |
| `kruidnoten` | Kruidnoten | **UNMATCHED** |
| `limitedlibrary` | Limited Library | [https://open.kattis.com/problems/limitedlibrary](https://open.kattis.com/problems/limitedlibrary) |
| `mousetrap` | Mouse Trap | [https://open.kattis.com/problems/mousetrap](https://open.kattis.com/problems/mousetrap) |

---

## Pacific Northwest Regional Contest (2007)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/130](https://solved.ac/problems/archive/contest/130)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `a_rock_paper_scissors` | Rock, Paper, or Scissors? | **UNMATCHED** |
| `b_missile_command` | Missile Command | **UNMATCHED** |
| `c_jeopardy` | Palindromic Primes Category in Jeopardy! | **UNMATCHED** |
| `d_pebbles` | Pebbles | **UNMATCHED** |
| `e_rubiks_cube` | Rubik’s Cube® | **UNMATCHED** |
| `f_skrzat` | Geek Challenge [SKRZAT] (Base Minus Two) | **UNMATCHED** |
| `g_frogger` | Frogger | **UNMATCHED** |
| `h_bubble_gum` | “Bubble Gum, Bubble Gum, in the dish, how many pieces do you | **UNMATCHED** |
| `i_games_r_us` | Games R Us | **UNMATCHED** |
| `j_cover_up` | Cover Up | **UNMATCHED** |
| `k_marbles` | Bridged Marble Rings | **UNMATCHED** |

---

## Pacific Northwest Regional Contest (2008)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/129](https://solved.ac/problems/archive/contest/129)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `a_cannon_balls` | Input: a.in | **UNMATCHED** |
| `b_robot_roll_call` | Input: b.in | **UNMATCHED** |
| `c_cave` | Input: c.in | **UNMATCHED** |
| `d_obstacle_course` | Input: d.in | **UNMATCHED** |
| `e_pencils` | Input: e.in | **UNMATCHED** |
| `f_winning_strategy` | Input: f.in | **UNMATCHED** |
| `g_symbolic_logic_mechanization` | Input: g.in | **UNMATCHED** |
| `h_repair_depots` | Input: h.in | **UNMATCHED** |
| `i_circuit` | Input: i.in | **UNMATCHED** |
| `j_propbot` | Input: j.in | **UNMATCHED** |
| `k_ancient_calculator` | Input: k.in | **UNMATCHED** |

---

## Pacific Northwest Regional Contest (2009)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/128](https://solved.ac/problems/archive/contest/128)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `a` | Problem: A | **UNMATCHED** |
| `b` | Input: b.in | **UNMATCHED** |
| `c` | Input: c.in | **UNMATCHED** |
| `d` | Input: d.in | **UNMATCHED** |
| `e` | Input: e.in | **UNMATCHED** |
| `f` | Input: f.in | **UNMATCHED** |
| `g` | Input: g.in | **UNMATCHED** |
| `h` | Input: h.in | **UNMATCHED** |
| `i` | Input: i.in | **UNMATCHED** |
| `j` | Input: j.in | **UNMATCHED** |
| `k` | Input: k.in | **UNMATCHED** |

---

## Pacific Northwest Regional Contest (2010)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/127](https://solved.ac/problems/archive/contest/127)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `PRACTICE` | Practice Problem | **UNMATCHED** |
| `aZombieLandRules` | Input file: a.in | **UNMATCHED** |
| `bContainment` | Input file: b.in | **UNMATCHED** |
| `cTheCount` | Input file: c.in | **UNMATCHED** |
| `dZombieSwallows` | Input file: d.in | **UNMATCHED** |
| `eDecomposingFibonacci` | Input file: e.in | **UNMATCHED** |
| `fVampireNumbers` | Input file: f.in Output: monitor/stdout/cout/System.out | **UNMATCHED** |
| `gDeCrypt` | Input file: g.in | **UNMATCHED** |
| `hGoodBrainOrBad` | Input file: h.in | **UNMATCHED** |
| `ifences` | Input file: i.in | **UNMATCHED** |
| `jPython` | Input file: j.in | **UNMATCHED** |
| `kZombieBlast` | Input file: k.in | **UNMATCHED** |
| `problem_colors_and_letters` | Letter | **UNMATCHED** |

---

## Pacific Northwest Regional Contest (2012)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/125](https://solved.ac/problems/archive/contest/125)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `GoodVersusEvil` | Goodversusevil | **UNMATCHED** |
| `MagicMultiple` | Magicmultiple | **UNMATCHED** |
| `PRACTICE` | Practice Problem: Print the Last Character | **UNMATCHED** |
| `PaintedCube` | Paintedcube | **UNMATCHED** |
| `Partition` | Partition | **UNMATCHED** |
| `RingsAndRunes` | Rings and Runes | **UNMATCHED** |
| `RitualCircle` | Ritualcircle | **UNMATCHED** |
| `SarumansLevelUp` | Sarumanslevelup | **UNMATCHED** |
| `SeatingChart` | Seatingchart | **UNMATCHED** |
| `Spellcasting` | Spellcasting | **UNMATCHED** |
| `TempleBuild` | Templebuild | **UNMATCHED** |
| `TileCut` | Tilecut | **UNMATCHED** |
| `Tongues` | Tongues | **UNMATCHED** |

---

## Pacific Northwest Regional Contest (2013)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1173](https://solved.ac/problems/archive/contest/1173)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `Assignments` | Assignments | **UNMATCHED** |
| `Bones` | Bones | **UNMATCHED** |
| `Crusher` | Crusher | **UNMATCHED** |
| `DeltaQuadrant` | Deltaquadrant | **UNMATCHED** |
| `Escape` | Escape | **UNMATCHED** |
| `Federation` | Federation | **UNMATCHED** |
| `Generations` | Generations | **UNMATCHED** |
| `Holodeck` | Holodeck | **UNMATCHED** |
| `Interstellar` | Interstellar | **UNMATCHED** |
| `Janeway` | Janeway | **UNMATCHED** |
| `Klingons` | Klingons | **UNMATCHED** |
| `Languages` | Languages | **UNMATCHED** |
| `M5` | M5 | **UNMATCHED** |

---

## Pacific Northwest Regional Contest (2014)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1317](https://solved.ac/problems/archive/contest/1317)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `Alchemy` | Alchemy | **UNMATCHED** |
| `Containment` | Containment | **UNMATCHED** |
| `Diamonds` | Diamonds | **UNMATCHED** |
| `Function` | Function | **UNMATCHED** |
| `GoldLeaf` | Goldleaf | **UNMATCHED** |
| `HillNumber` | Hillnumber | **UNMATCHED** |
| `Knights` | Knights | **UNMATCHED** |
| `Majority` | Majority | **UNMATCHED** |
| `NumberGame` | Numbergame | **UNMATCHED** |
| `Polyhedra` | Polyhedra | **UNMATCHED** |
| `Pushups` | Pushups | **UNMATCHED** |
| `RampNumber` | Rampnumber | **UNMATCHED** |
| `RankedChoice` | Rankedchoice | **UNMATCHED** |
| `Runes` | Runes | **UNMATCHED** |
| `SalaryInequity` | Salaryinequity | **UNMATCHED** |
| `StampStamp` | Stampstamp | **UNMATCHED** |
| `Top25` | Top25 | **UNMATCHED** |
| `Towers` | Towers | **UNMATCHED** |
| `Wormhole` | Wormhole | **UNMATCHED** |
| `Wrench` | Wrench | **UNMATCHED** |

---

## Pacific Northwest Regional Contest (2017)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1791](https://solved.ac/problems/archive/contest/1791)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `AvoidingAirports` | Avoiding Airports | **UNMATCHED** |
| `DelayedWork` | Delayed Work | **UNMATCHED** |
| `DistinctDistances` | Distinct Distances | **UNMATCHED** |
| `EnlargingEnthusiasm` | Enlarging Enthusiasm | **UNMATCHED** |
| `FearFactoring` | Fear Factoring | **UNMATCHED** |
| `ForbiddenZero` | Forbidden Zero | **UNMATCHED** |
| `GridColoring` | Grid Coloring | **UNMATCHED** |
| `Halfway` | Halfway | **UNMATCHED** |
| `LatinSquares` | Latin Squares | **UNMATCHED** |
| `LongLongStrings` | Long Long Strings | **UNMATCHED** |
| `OddPalindrome` | Odd Palindrome | **UNMATCHED** |
| `PurpleRain` | Purple Rain | **UNMATCHED** |
| `RainbowRoads` | Rainbow Roads | **UNMATCHED** |
| `SecurityBadge` | Security Badge | **UNMATCHED** |
| `SpinningUpPalindromes` | Spinning Up Palindromes | **UNMATCHED** |
| `StarArrangements` | Star Arrangements | **UNMATCHED** |
| `StraightShot` | Straight Shot | **UNMATCHED** |
| `UnloadedDie` | Unloaded Die | **UNMATCHED** |
| `Unsatisfying` | Unsatisfying | **UNMATCHED** |

---

## Pacific Northwest Regional Contest (2018)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1976](https://solved.ac/problems/archive/contest/1976)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `ContestSetting` | Contestsetting | **UNMATCHED** |
| `CoprimeIntegers` | Coprimeintegers | **UNMATCHED** |
| `CopsAndRobbers` | Copsandrobbers | **UNMATCHED** |
| `CountTheBits` | Countthebits | **UNMATCHED** |
| `Exam` | Exam | **UNMATCHED** |
| `GoatRope` | Goatrope | **UNMATCHED** |
| `GreedyScheduler` | Greedyscheduler | **UNMATCHED** |
| `HouseNumbers` | Housenumbers | **UNMATCHED** |
| `Inversions` | Inversions | **UNMATCHED** |
| `Knockout` | Knockout | **UNMATCHED** |
| `Liars` | Liars | **UNMATCHED** |
| `Mobilization` | Mobilization | **UNMATCHED** |
| `PaperCuts` | Papercuts | **UNMATCHED** |
| `PizzaDeal` | Pizzadeal | **UNMATCHED** |
| `PokerHand` | Pokerhand | **UNMATCHED** |
| `RandomIndexVectors` | Randomindexvectors | **UNMATCHED** |
| `Rectangles` | Rectangles | **UNMATCHED** |
| `RepeatingGoldbachs` | Repeatinggoldbachs | **UNMATCHED** |
| `TimeLimits` | Timelimits | **UNMATCHED** |

---

## Pacific Northwest Regional Contest (2019)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2131](https://solved.ac/problems/archive/contest/2131)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2019%20ICPC%20Pacific%20Northwest%20Regional%20Programming%20Contest](https://open.kattis.com/problem-sources/2019%20ICPC%20Pacific%20Northwest%20Regional%20Programming%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `blackandwhite` | Black and White | **UNMATCHED** |
| `carrylesssquareroot` | Carrylesssquareroot | **UNMATCHED** |
| `checkerboard` | Checkerboard | **UNMATCHED** |
| `coloringgraphedgesgame` | Coloringgraphedgesgame | **UNMATCHED** |
| `computercache` | Computer Cache | **UNMATCHED** |
| `dividingbytwo` | Dividing by Two | **UNMATCHED** |
| `errorcorrection` | Error Correction | **UNMATCHED** |
| `evenorodd` | Even or Odd | **UNMATCHED** |
| `fixedpointpermutations` | Fixedpointpermutations | **UNMATCHED** |
| `glowpixel` | Glowpixel | **UNMATCHED** |
| `interstellartravel` | Interstellar Travel | **UNMATCHED** |
| `issuingplates` | Issuing Plates | **UNMATCHED** |
| `levenshtein` | Levenshtein | **UNMATCHED** |
| `mazeconnect` | Maze Connect | **UNMATCHED** |
| `morseredux` | Morseredux | **UNMATCHED** |
| `perfectflush` | Perfect Flush | **UNMATCHED** |
| `radioprize` | Radio Prize | **UNMATCHED** |
| `rainbowstrings` | Rainbow Strings | **UNMATCHED** |
| `speeding` | Speeding | [https://open.kattis.com/problems/speeding](https://open.kattis.com/problems/speeding) |
| `windmillpivot` | Windmillpivot | **UNMATCHED** |

---

## Pacific Northwest Regional Contest (2020)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2460](https://solved.ac/problems/archive/contest/2460)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `anttyping` | Ant Typing | **UNMATCHED** |
| `badpacking` | Bad Packing | **UNMATCHED** |
| `basicbasis` | Basic Basis | **UNMATCHED** |
| `bitonicordering` | Bitonic Ordering | **UNMATCHED** |
| `condorcet` | Condorcet | **UNMATCHED** |
| `derangementrotations` | Derangement Rotations | **UNMATCHED** |
| `dominatingduos` | Dominating Duos | **UNMATCHED** |
| `exammanipulation` | Exam Manipulation | **UNMATCHED** |
| `excitingtournament` | Exciting Tournament | **UNMATCHED** |
| `kangarooparty` | Kangarooparty | **UNMATCHED** |
| `kthsubtree` | Kth Subtree | **UNMATCHED** |
| `longestcommonsubsequence` | Longest Common Subsequence | **UNMATCHED** |
| `magictrick` | Magictrick | **UNMATCHED** |
| `missingnumber` | Missingnumber | **UNMATCHED** |
| `nothanks` | No Thanks! | **UNMATCHED** |
| `paintedcorridors` | Painted Corridors | **UNMATCHED** |
| `rainbownumbers` | Rainbow Numbers | **UNMATCHED** |
| `ratingproblems` | Ratingproblems | **UNMATCHED** |
| `reconstructsum` | Reconstruct Sum | **UNMATCHED** |
| `triangularcollection` | Triangular Collection | **UNMATCHED** |
| `triptik` | TripTik | **UNMATCHED** |

---

## Pacific Northwest Regional Contest (2021)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/3038](https://solved.ac/problems/archive/contest/3038)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `archeryaccuracy` | Archery Accuracy | **UNMATCHED** |
| `blackandwhite` | Blackandwhite | **UNMATCHED** |
| `circlebounce` | Circle Bounce | **UNMATCHED** |
| `diagonals` | Diagonals | **UNMATCHED** |
| `dormroomdivide` | Dorm Room Divide | **UNMATCHED** |
| `doublepassword` | Doublepassword | **UNMATCHED** |
| `failthemall` | Fail Them All! | **UNMATCHED** |
| `hopscotch500` | Hopscotch 500 | **UNMATCHED** |
| `problemsetconstruction` | Problemsetconstruction | **UNMATCHED** |
| `reversiblecyclic` | Reversiblecyclic | **UNMATCHED** |
| `riseandfall` | Rise and Fall | **UNMATCHED** |
| `scalingrecipe` | Scalingrecipe | **UNMATCHED** |
| `shortestmissingsubsequences` | Shortest Missing Subsequences | **UNMATCHED** |
| `squarebounce` | Squarebounce | **UNMATCHED** |
| `tetrisgeneration` | Tetrisgeneration | **UNMATCHED** |
| `tournamentseeding` | Tournament Seeding | **UNMATCHED** |
| `treehopping` | Tree Hopping | **UNMATCHED** |
| `xorisland` | XOR Island | **UNMATCHED** |

---

## Pacific Northwest Regional Contest (2022)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/3514](https://solved.ac/problems/archive/contest/3514)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `advertisingicpc` | Advertisingicpc | **UNMATCHED** |
| `alchemy` | Alchemy | **UNMATCHED** |
| `branchmanager` | Branchmanager | **UNMATCHED** |
| `champernownecount` | Champernowne Count | **UNMATCHED** |
| `chocolatechipfabrication` | Chocolate Chip Fabrication | **UNMATCHED** |
| `colortubes` | Color Tubes | **UNMATCHED** |
| `countingsatellites` | Countingsatellites | **UNMATCHED** |
| `creativeaccounting` | Creative Accounting | **UNMATCHED** |
| `digitsofunity` | Digitsofunity | **UNMATCHED** |
| `distinctparityexcess` | Distinct Parity Excess | **UNMATCHED** |
| `exponentexchange` | Exponentexchange | **UNMATCHED** |
| `fadingwind` | Fading Wind | **UNMATCHED** |
| `foodprocessor` | Food Processor | **UNMATCHED** |
| `huntthewumpus` | Hunt the Wumpus | **UNMATCHED** |
| `icouldhavewon` | I Could Have Won | **UNMATCHED** |
| `loneknight` | Loneknight | **UNMATCHED** |
| `restaurantopening` | Restaurant Opening | **UNMATCHED** |
| `sunandmoon` | Sun and Moon | **UNMATCHED** |
| `threedice` | Three Dice | **UNMATCHED** |
| `trianglecontainment` | Trianglecontainment | **UNMATCHED** |

---

## Pacific Northwest Regional Contest (2023)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4156](https://solved.ac/problems/archive/contest/4156)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `2024thprime` | 2024th Prime | **UNMATCHED** |
| `abcstring` | ABC String | **UNMATCHED** |
| `acappellarecording` | A Cappella Recording | **UNMATCHED** |
| `acceptableseatingarrangements` | Acceptable Seating Arrangements | **UNMATCHED** |
| `balancedtreepath` | Balanced Tree Path | **UNMATCHED** |
| `candyfactory` | Candy Factory | **UNMATCHED** |
| `champernowneverification` | Champernowne Verification | **UNMATCHED** |
| `crammingforfinals` | Cramming for Finals | **UNMATCHED** |
| `diversecontest` | Diverse Contest | **UNMATCHED** |
| `eccentricexcursion` | Eccentric Excursion | **UNMATCHED** |
| `fourdierolls` | Four Die Rolls | **UNMATCHED** |
| `itemselection` | Item Selection | **UNMATCHED** |
| `magiccube` | Magic Cube | **UNMATCHED** |
| `matrixfraud` | Matrix Fraud | **UNMATCHED** |
| `oncallteam` | On-Call Team | **UNMATCHED** |
| `orderedproblemset` | Ordered Problem Set | **UNMATCHED** |
| `rampantgrowth` | Rampant Growth | **UNMATCHED** |
| `rangeediting` | Range Editing | **UNMATCHED** |
| `segmentdrawing` | Segment Drawing | **UNMATCHED** |
| `sequenceguessing` | Sequence Guessing | **UNMATCHED** |
| `streetsbehind` | Streets Behind | **UNMATCHED** |
| `tournamentmatchmaking` | Tournament Matchmaking | **UNMATCHED** |
| `training` | Training | **UNMATCHED** |
| `triplesevens` | Triple Sevens | **UNMATCHED** |

---

## QUAL 2012 (2012)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `choosingnumbers` | Choosingnumbers | **UNMATCHED** |
| `curvyblocks` | Curvyblocks | **UNMATCHED** |
| `hittingtargets` | Hittingtargets | **UNMATCHED** |
| `loopytransit` | Loopytransit | **UNMATCHED** |
| `mazemovement` | Mazemovement | **UNMATCHED** |
| `multitouch` | Multitouch | **UNMATCHED** |
| `outofcontext` | Outofcontext | **UNMATCHED** |
| `quiteaproblem` | Quiteaproblem | **UNMATCHED** |
| `raggedright` | Raggedright | **UNMATCHED** |
| `texassummers` | Texassummers | **UNMATCHED** |
| `unicycles` | Unicycles | **UNMATCHED** |

---

## QUAL 2013 (2013)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `4thought` | 4Thought | **UNMATCHED** |
| `biggest` | Biggest | **UNMATCHED** |
| `erraticants` | Erraticants | **UNMATCHED** |
| `evenup` | Evenup | **UNMATCHED** |
| `goldbach` | Goldbach | **UNMATCHED** |
| `island` | Island | **UNMATCHED** |
| `oddities` | Oddities | **UNMATCHED** |
| `plot` | Plot | **UNMATCHED** |
| `shotcube` | Shotcube | **UNMATCHED** |
| `ternarianweights` | Ternarianweights | **UNMATCHED** |
| `walkway` | Walkway | **UNMATCHED** |

---

## QUAL 2014 (2014)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `8queens` | 8Queens | **UNMATCHED** |
| `colorwalk` | Color Walk | **UNMATCHED** |
| `flexible` | Flexible | **UNMATCHED** |
| `flipfive` | Flip Five | **UNMATCHED** |
| `humancannonball` | Humancannonball | **UNMATCHED** |
| `mixedfractions` | Mixed Fractions | **UNMATCHED** |
| `mosquitoes` | Mosquitoes | **UNMATCHED** |
| `narrowartgallery` | Narrow Art Gallery | **UNMATCHED** |
| `tractor` | Tractor | **UNMATCHED** |
| `units` | Units | **UNMATCHED** |
| `yikes` | Yikes | **UNMATCHED** |

---

## QUAL 2015 (2015)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `allaboutthatbase` | All about that base | **UNMATCHED** |
| `bobby` | Bobby | **UNMATCHED** |
| `cantinaofbabel` | Cantina of Babel | **UNMATCHED** |
| `countcircuits` | Countcircuits | **UNMATCHED** |
| `cuttingbrownies` | Cutting Brownies | **UNMATCHED** |
| `quickbrownfox` | Quick Brown Fox | **UNMATCHED** |
| `safepassage` | Safe Passage | **UNMATCHED** |
| `secretmessage` | Secret Message | **UNMATCHED** |
| `simonsays` | Simon Says | **UNMATCHED** |
| `torn2pieces` | Torn2Pieces | **UNMATCHED** |
| `undetected` | UnDetected | **UNMATCHED** |

---

## QUAL 2016 (2016)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `anewalphabet` | A New Alphabet | **UNMATCHED** |
| `arcade` | Arcade! | **UNMATCHED** |
| `bigtruck` | Big Truck | **UNMATCHED** |
| `brackets` | Brackets | **UNMATCHED** |
| `dotsboxes` | Dotsboxes | **UNMATCHED** |
| `freedesserts` | Free Desserts | **UNMATCHED** |
| `inversefactorial` | Inverse Factorial | **UNMATCHED** |
| `ninepacks` | Nine Packs | **UNMATCHED** |
| `primonimo` | Primonimo | **UNMATCHED** |
| `quickestimate` | Quickestimate | **UNMATCHED** |
| `robotopia` | Robotopia | **UNMATCHED** |
| `unusualdarts` | Unusual Darts | **UNMATCHED** |

---

## QUAL 2017 (2017)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `birthdaycake` | Birthday Cake | **UNMATCHED** |
| `bumped` | Bumped! | **UNMATCHED** |
| `canonical` | Canonical | **UNMATCHED** |
| `catandmice` | Cat and Mice | **UNMATCHED** |
| `companypicnic` | Company Picnic | **UNMATCHED** |
| `glitchbot` | GlitchBot | **UNMATCHED** |
| `greetingcard` | Greeting Card | **UNMATCHED** |
| `imperfectgps` | Imperfect GPS | **UNMATCHED** |
| `oddgnome` | Odd Gnome | **UNMATCHED** |
| `progressivescramble` | Progressive Scramble | **UNMATCHED** |
| `spaceprobe` | Space Probe | **UNMATCHED** |
| `suspensionbridges` | Suspension Bridges | **UNMATCHED** |
| `umbraldecoding` | Umbral Decoding | **UNMATCHED** |

---

## QUAL 2018 (2018)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `bingoties` | Bingo Ties | **UNMATCHED** |
| `dasblinkenlights` | Das Blinkenlights | **UNMATCHED** |
| `ebonyandivory` | Ebony and Ivory | **UNMATCHED** |
| `froggie` | Froggie | **UNMATCHED** |
| `fruitslicer` | Fruit Slicer | **UNMATCHED** |
| `lcmtree` | LCM Tree | **UNMATCHED** |
| `leftandright` | Left and Right | **UNMATCHED** |
| `longestlife` | Longest Life | **UNMATCHED** |
| `monitoringskipaths` | Monitoring Ski Paths | **UNMATCHED** |
| `peggamefortwo` | Peg Game for Two | **UNMATCHED** |
| `runlengthencodingrun` | Run-Length Encoding, Run! | **UNMATCHED** |
| `superdoku` | Superdoku | **UNMATCHED** |
| `triangularclouds` | Triangular Clouds | **UNMATCHED** |

---

## QUAL 2019 (2019)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `circuitmath` | Circuit Math | **UNMATCHED** |
| `diagonalcut` | Diagonal Cut | **UNMATCHED** |
| `gerrymandering` | Gerrymandering | **UNMATCHED** |
| `missingnumbers` | Missing Numbers | **UNMATCHED** |
| `nvwls` | NVWLS | **UNMATCHED** |
| `prospecting` | Prospecting | **UNMATCHED** |
| `researchproductivityindex` | Research Productivity Index | **UNMATCHED** |
| `runningroutes` | Running Routes | **UNMATCHED** |
| `slowleak` | Slow Leak | **UNMATCHED** |
| `stopcounting` | Stop Counting! | **UNMATCHED** |
| `summertrip` | Summer Trip | **UNMATCHED** |
| `travelingmerchant` | Traveling Merchant | **UNMATCHED** |
| `zipline` | Zipline | **UNMATCHED** |

---

## QUAL 2020 (2020)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `drawingcircles` | Drawing Circles | **UNMATCHED** |
| `perfectpathpatrol` | Perfect Path Patrol | **UNMATCHED** |
| `skysthelimit` | Sky’s the Limit | **UNMATCHED** |
| `usingdigits` | Using Digits | **UNMATCHED** |

---

## QUAL 2021 (2021)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `alienintegers` | Alien Integers | **UNMATCHED** |
| `avoidingasteroids` | Avoiding Asteroids | **UNMATCHED** |
| `commonfactors` | Common Factors | **UNMATCHED** |
| `dimensionalanalysis` | Dimensional Analysis | **UNMATCHED** |
| `eyeofsauron` | Eye of Sauron | **UNMATCHED** |
| `ilovestrings` | ilove Strings | **UNMATCHED** |
| `mrcodeformatgrader` | MrCodeFormatGrader | **UNMATCHED** |
| `mult` | Mult! | **UNMATCHED** |
| `pizzaparty` | Pizza Party! | **UNMATCHED** |
| `stackingup` | Stacking Up | **UNMATCHED** |
| `stampcombinations` | Stamp Combinations | **UNMATCHED** |
| `swordcounting` | Sword Counting | **UNMATCHED** |
| `tictacstate` | Tic-Tac State | **UNMATCHED** |
| `vennintervals` | Venn Intervals | **UNMATCHED** |

---

## QUAL 2022 (2022)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `beastbullies` | Beast Bullies | **UNMATCHED** |
| `birthdaygift` | Birthday Gift | **UNMATCHED** |
| `classfieldtrip` | Class Field Trip | **UNMATCHED** |
| `ghostleg` | Ghost Leg | **UNMATCHED** |
| `mazeman` | MazeMan | **UNMATCHED** |
| `metronome` | Metronome | **UNMATCHED** |
| `movienight` | Movie Night | **UNMATCHED** |
| `platformplacing` | Platform Placing | **UNMATCHED** |
| `roomevacuation` | Room Evacuation | **UNMATCHED** |
| `smallestcalculatedvalue` | Smallest Calculated Value | **UNMATCHED** |
| `spideydistance` | Spidey Distance | **UNMATCHED** |
| `tollroads` | Toll Roads | **UNMATCHED** |

---

## QUAL 2023 (2023)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `contestadvancement` | Contestadvancement | **UNMATCHED** |
| `digittranslation` | Digit Translation | **UNMATCHED** |
| `donthungertogether` | Don’t Hunger Together | **UNMATCHED** |
| `gardenofthorns` | Garden of Thorns | **UNMATCHED** |
| `icpcteamgeneration` | ICPC Team Generation | **UNMATCHED** |
| `isyavowel` | Is Y a Vowel? | **UNMATCHED** |
| `linesperhour` | Lines Per Hour | **UNMATCHED** |
| `magnesiumsupplementation` | Magnesium Supplementation | **UNMATCHED** |
| `missingnumber` | Missing Number | **UNMATCHED** |
| `tipofyourtongue` | Tip of Your Tongue | **UNMATCHED** |
| `veryimportantedge` | Very Important Edge | **UNMATCHED** |
| `waterjournal` | Water Journal | **UNMATCHED** |

---

## QUAL 2024 (2024)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `balatro` | Balatro | **UNMATCHED** |
| `bikesandbarricades` | Bikes and Barricades | **UNMATCHED** |
| `callforproblems` | Call for Problems | **UNMATCHED** |
| `colorfultrees` | Colorful Trees | **UNMATCHED** |
| `dishonestlottery` | Dishonest Lottery | **UNMATCHED** |
| `ellipseeclipse` | Ellipse Eclipse | **UNMATCHED** |
| `gearsandaxles` | Gears and Axles | **UNMATCHED** |
| `geneticreconstruction` | Genetic Reconstruction | **UNMATCHED** |
| `lightup` | Light Up | **UNMATCHED** |
| `mengersponge` | Menger Sponge | **UNMATCHED** |
| `rhythmflow` | Rhythm Flow | **UNMATCHED** |
| `snake` | Snake | **UNMATCHED** |

---

## QUAL 2025 (2025)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `artinstallation` | Art Installation | **UNMATCHED** |
| `backuptowers` | Backup Towers | **UNMATCHED** |
| `callforproblemsround2` | Callforproblemsround2 | **UNMATCHED** |
| `carlsmazesolvingalgorithm` | Carl’s Maze-Solving Algorithm | **UNMATCHED** |
| `curling` | Curling | **UNMATCHED** |
| `figureskatingjudging` | Figure Skating Judging | **UNMATCHED** |
| `mingle` | Mingle | **UNMATCHED** |
| `seesaw` | Seesaw | **UNMATCHED** |
| `starguardians` | Star Guardians | **UNMATCHED** |
| `tenplayerbingo` | Ten Player Bingo | **UNMATCHED** |
| `treasurehunt2` | Treasurehunt2 | **UNMATCHED** |
| `triplejump` | Triple Jump | **UNMATCHED** |
| `utopiarelationships` | Utopia Relationships | **UNMATCHED** |

---

## QUAL 2026 (2026)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `airtime` | Airtime | **UNMATCHED** |
| `babylon` | Babylon | **UNMATCHED** |
| `browniecutting` | Brownie Cutting | **UNMATCHED** |
| `espressomacchiato` | Espresso Macchiato | **UNMATCHED** |
| `fairytale` | Fairytale | **UNMATCHED** |
| `lastdance` | Last Dance | **UNMATCHED** |
| `mysystem` | My System | **UNMATCHED** |
| `onlyoneorder` | Only One Order | **UNMATCHED** |
| `regarde` | Regarde! | **UNMATCHED** |
| `sixseven3` | Sixseven3 | **UNMATCHED** |
| `stardustcurry` | Stardust Curry | **UNMATCHED** |
| `thendaysofchristmas2` | Thendaysofchristmas2 | **UNMATCHED** |
| `tourismbalance` | Tourism Balance | **UNMATCHED** |

---

## Rocky Mountain Regional Contest (2014)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1298](https://solved.ac/problems/archive/contest/1298)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Contest%20%28RMRC%29%202014](https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Contest%20%28RMRC%29%202014)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `eligibility` | Eligibility | [https://open.kattis.com/problems/eligibility](https://open.kattis.com/problems/eligibility) |
| `facility` | Facility Locations | [https://open.kattis.com/problems/facility](https://open.kattis.com/problems/facility) |
| `fraction` | Continued Fraction | [https://open.kattis.com/problems/fraction](https://open.kattis.com/problems/fraction) |
| `landline` | Landline Telephone Network | [https://open.kattis.com/problems/landline](https://open.kattis.com/problems/landline) |
| `locks` | Locked Treasure | [https://open.kattis.com/problems/lockedtreasure](https://open.kattis.com/problems/lockedtreasure) |
| `ratings` | Restaurant Ratings | [https://open.kattis.com/problems/ratings](https://open.kattis.com/problems/ratings) |
| `sat` | Yet Satisfiability Again! | [https://open.kattis.com/problems/satisfiability](https://open.kattis.com/problems/satisfiability) |
| `seats` | Plane Ticket Pricing | [https://open.kattis.com/problems/ticketpricing](https://open.kattis.com/problems/ticketpricing) |
| `server` | Server | [https://open.kattis.com/problems/server](https://open.kattis.com/problems/server) |
| `substrings` | Repeated Substrings | [https://open.kattis.com/problems/substrings](https://open.kattis.com/problems/substrings) |
| `tank` | Aquarium Tank | [https://open.kattis.com/problems/tank](https://open.kattis.com/problems/tank) |

---

## Rocky Mountain Regional Contest (2015)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1428](https://solved.ac/problems/archive/contest/1428)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Contest%20%28RMRC%29%202015](https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Contest%20%28RMRC%29%202015)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `bundles` | Bundles of Joy | [https://open.kattis.com/problems/bundles](https://open.kattis.com/problems/bundles) |
| `classy` | A Classy Problem | [https://open.kattis.com/problems/classy](https://open.kattis.com/problems/classy) |
| `everywhere` | I | [https://open.kattis.com/problems/everywhere](https://open.kattis.com/problems/everywhere) |
| `flippingcards` | Card Game | [https://open.kattis.com/problems/flippingcards](https://open.kattis.com/problems/flippingcards) |
| `junk` | Space Junk | [https://open.kattis.com/problems/junk](https://open.kattis.com/problems/junk) |
| `keypad` | Matrix Keypad | [https://open.kattis.com/problems/keypad](https://open.kattis.com/problems/keypad) |
| `magical3` | The Magical 3 | [https://open.kattis.com/problems/magical3](https://open.kattis.com/problems/magical3) |
| `race` | Amazing Race | [https://open.kattis.com/problems/race](https://open.kattis.com/problems/race) |
| `recipes` | Scaling Recipes | [https://open.kattis.com/problems/recipes](https://open.kattis.com/problems/recipes) |
| `rubiksrevenge` | Rubik | [https://open.kattis.com/problems/rubiksrevenge](https://open.kattis.com/problems/rubiksrevenge) |
| `vote` | Popular Vote | [https://open.kattis.com/problems/vote](https://open.kattis.com/problems/vote) |

---

## Rocky Mountain Regional Contest (2016)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1761](https://solved.ac/problems/archive/contest/1761)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Contest%20%28RMRC%29%202016](https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Contest%20%28RMRC%29%202016)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `cups` | Stacking Cups | [https://open.kattis.com/problems/cups](https://open.kattis.com/problems/cups) |
| `delivering` | Delivering Goods | [https://open.kattis.com/problems/delivering](https://open.kattis.com/problems/delivering) |
| `election` | Election | [https://open.kattis.com/problems/election](https://open.kattis.com/problems/election) |
| `fizzbuzz` | FizzBuzz | [https://open.kattis.com/problems/fizzbuzz](https://open.kattis.com/problems/fizzbuzz) |
| `flowshop` | Flow Shop | [https://open.kattis.com/problems/flowshop](https://open.kattis.com/problems/flowshop) |
| `numbers` | Nice Numbers | [https://open.kattis.com/problems/numbers](https://open.kattis.com/problems/numbers) |
| `password` | Password Hacking | [https://open.kattis.com/problems/password](https://open.kattis.com/problems/password) |
| `stack` | Stack Construction | [https://open.kattis.com/problems/stack](https://open.kattis.com/problems/stack) |
| `studying` | Studying Exams | [https://open.kattis.com/problems/studying](https://open.kattis.com/problems/studying) |
| `traffic` | Bumper-To-Bumper Traffic | [https://open.kattis.com/problems/traffic](https://open.kattis.com/problems/traffic) |

---

## Rocky Mountain Regional Contest (2017)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1811](https://solved.ac/problems/archive/contest/1811)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Contest%20%28RMRC%29%202017](https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Contest%20%28RMRC%29%202017)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `decisions` | Decisions, Decisions | [https://open.kattis.com/problems/decisions](https://open.kattis.com/problems/decisions) |
| `flowfree` | Flow Free | [https://open.kattis.com/problems/flowfree](https://open.kattis.com/problems/flowfree) |
| `froshweek2` | Frosh Week | [https://open.kattis.com/problems/froshweek2](https://open.kattis.com/problems/froshweek2) |
| `heartrate` | Heart Rate | [https://open.kattis.com/problems/heartrate](https://open.kattis.com/problems/heartrate) |
| `hissingmicrophone` | Hissing Microphone | [https://open.kattis.com/problems/hissingmicrophone](https://open.kattis.com/problems/hissingmicrophone) |
| `initials` | Initials | [https://open.kattis.com/problems/initials](https://open.kattis.com/problems/initials) |
| `multiplicationgame` | Multiplication Game | [https://open.kattis.com/problems/multiplicationgame](https://open.kattis.com/problems/multiplicationgame) |
| `openpitmining` | Open-Pit Mining | [https://open.kattis.com/problems/openpitmining](https://open.kattis.com/problems/openpitmining) |
| `palindromicpassword` | Palindromic Password | [https://open.kattis.com/problems/palindromicpassword](https://open.kattis.com/problems/palindromicpassword) |
| `particlecollision` | Particle Collision | [https://open.kattis.com/problems/particlecollision](https://open.kattis.com/problems/particlecollision) |
| `simplification` | Polyline Simplification | [https://open.kattis.com/problems/simplification](https://open.kattis.com/problems/simplification) |

---

## Rocky Mountain Regional Contest (2018)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2613](https://solved.ac/problems/archive/contest/2613)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Programming%20Contest%202018](https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Programming%20Contest%202018)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `drivinglanes` | Driving Lanes | [https://open.kattis.com/problems/drivinglanes](https://open.kattis.com/problems/drivinglanes) |
| `forestforthetrees` | Trees | [https://open.kattis.com/problems/forestforthetrees](https://open.kattis.com/problems/forestforthetrees) |
| `gwensgift` | Gwen | [https://open.kattis.com/problems/gwensgift](https://open.kattis.com/problems/gwensgift) |
| `hindex` | H-Index | [https://open.kattis.com/problems/hindex](https://open.kattis.com/problems/hindex) |
| `neighborhoodwatch` | Neighbourhood Watch | [https://open.kattis.com/problems/neighborhoodwatch](https://open.kattis.com/problems/neighborhoodwatch) |
| `plowking` | Mr. Plow King | [https://open.kattis.com/problems/plowking](https://open.kattis.com/problems/plowking) |
| `qaly` | Quality-Adjusted Life-Year | [https://open.kattis.com/problems/qaly](https://open.kattis.com/problems/qaly) |
| `rainbowroadrace` | Rainbow Road Race | [https://open.kattis.com/problems/rainbowroadrace](https://open.kattis.com/problems/rainbowroadrace) |
| `smallschedule` | Small Schedule | [https://open.kattis.com/problems/smallschedule](https://open.kattis.com/problems/smallschedule) |
| `treasurespotting` | Treasure Spotting | [https://open.kattis.com/problems/treasurespotting](https://open.kattis.com/problems/treasurespotting) |

---

## Rocky Mountain Regional Contest (2019)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2100](https://solved.ac/problems/archive/contest/2100)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Programming%20Contest%202019](https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Programming%20Contest%202019)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `biggesttriangle` | The Biggest Triangle | [https://open.kattis.com/problems/biggesttriangle](https://open.kattis.com/problems/biggesttriangle) |
| `fantasydraft` | Fantasy Draft | [https://open.kattis.com/problems/fantasydraft](https://open.kattis.com/problems/fantasydraft) |
| `foldingacube` | Folding a Cube | [https://open.kattis.com/problems/foldingacube](https://open.kattis.com/problems/foldingacube) |
| `hogwarts2` | Hogwarts | [https://open.kattis.com/problems/hogwarts2](https://open.kattis.com/problems/hogwarts2) |
| `integerdivision` | Integer Division | [https://open.kattis.com/problems/integerdivision](https://open.kattis.com/problems/integerdivision) |
| `lostlineup` | Lost Lineup | [https://open.kattis.com/problems/lostlineup](https://open.kattis.com/problems/lostlineup) |
| `molecules` | Molecules | [https://open.kattis.com/problems/molecules](https://open.kattis.com/problems/molecules) |
| `pieceofcake2` | Piece of Cake | [https://open.kattis.com/problems/pieceofcake2](https://open.kattis.com/problems/pieceofcake2) |
| `tiredterry` | Tired Terry | [https://open.kattis.com/problems/tiredterry](https://open.kattis.com/problems/tiredterry) |
| `typo` | Typo | [https://open.kattis.com/problems/typo](https://open.kattis.com/problems/typo) |
| `watchlater` | Watch Later | [https://open.kattis.com/problems/watchlater](https://open.kattis.com/problems/watchlater) |

---

## Rocky Mountain Regional Contest (2020)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2466](https://solved.ac/problems/archive/contest/2466)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Programming%20Contest%202020](https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Programming%20Contest%202020)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `antimatterrain` | antimatterrain | [https://open.kattis.com/problems/antimatterrain](https://open.kattis.com/problems/antimatterrain) |
| `arithmeticdecoding` | Arithmetic Decoding | [https://open.kattis.com/problems/arithmeticdecoding](https://open.kattis.com/problems/arithmeticdecoding) |
| `conquest` | Conquest | [https://open.kattis.com/problems/conquest](https://open.kattis.com/problems/conquest) |
| `distance` | Distance | [https://open.kattis.com/problems/distance](https://open.kattis.com/problems/distance) |
| `forcedchoice` | Forced Choice | [https://open.kattis.com/problems/forcedchoice](https://open.kattis.com/problems/forcedchoice) |
| `interviewqueue` | Interview Queue | [https://open.kattis.com/problems/interviewqueue](https://open.kattis.com/problems/interviewqueue) |
| `papersnowflakes` | Paper Snowflakes | [https://open.kattis.com/problems/papersnowflakes](https://open.kattis.com/problems/papersnowflakes) |
| `pegsandlegs` | Pegs and Legs | [https://open.kattis.com/problems/pegsandlegs](https://open.kattis.com/problems/pegsandlegs) |
| `stopwatch` | Stopwatch | [https://open.kattis.com/problems/stopwatch](https://open.kattis.com/problems/stopwatch) |
| `trainboarding` | Train Boarding | [https://open.kattis.com/problems/trainboarding](https://open.kattis.com/problems/trainboarding) |
| `vaccineefficacy` | Vaccine Efficacy | [https://open.kattis.com/problems/vaccineefficacy](https://open.kattis.com/problems/vaccineefficacy) |

---

## Rocky Mountain Regional Contest (2021)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/3061](https://solved.ac/problems/archive/contest/3061)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Programming%20Contest%202021](https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Programming%20Contest%202021)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `antialiasing` | Antialiasing | [https://open.kattis.com/problems/antialiasing](https://open.kattis.com/problems/antialiasing) |
| `betting` | Betting | [https://open.kattis.com/problems/betting](https://open.kattis.com/problems/betting) |
| `electionparadox` | Election Paradox | [https://open.kattis.com/problems/electionparadox](https://open.kattis.com/problems/electionparadox) |
| `lootchest` | Loot Chest | [https://open.kattis.com/problems/lootchest](https://open.kattis.com/problems/lootchest) |
| `pawnshop` | Pawn Shop | [https://open.kattis.com/problems/pawnshop](https://open.kattis.com/problems/pawnshop) |
| `protectthepollen` | Conquest 2 | **UNMATCHED** |
| `rsamistake` | Trade Routes | [https://open.kattis.com/problems/traderoutes](https://open.kattis.com/problems/traderoutes) |
| `slidecount` | Slide Count | [https://open.kattis.com/problems/slidecount](https://open.kattis.com/problems/slidecount) |
| `snowballfight` | snowballfight | [https://open.kattis.com/problems/snowballfight](https://open.kattis.com/problems/snowballfight) |
| `socialdistancing` | Social Distancing | [https://open.kattis.com/problems/socialdistancing2](https://open.kattis.com/problems/socialdistancing2) |
| `teamchange` | Team Change | [https://open.kattis.com/problems/teamchange](https://open.kattis.com/problems/teamchange) |
| `ticketcompleted` | Ticket Completed? | [https://open.kattis.com/problems/ticketcompleted](https://open.kattis.com/problems/ticketcompleted) |
| `traderoutes` | Trade Routes | [https://open.kattis.com/problems/traderoutes](https://open.kattis.com/problems/traderoutes) |
| `wordlewithfriends` | Wordle with Friends | [https://open.kattis.com/problems/wordlewithfriends](https://open.kattis.com/problems/wordlewithfriends) |

---

## Rocky Mountain Regional Contest (2022)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/3516](https://solved.ac/problems/archive/contest/3516)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `blueberrywaffle` | Blueberry Waffle | **UNMATCHED** |
| `branchmanager` | Branch Manager | **UNMATCHED** |
| `champernownecount` | Champernowne Count | **UNMATCHED** |
| `colortubes` | Color Tubes | **UNMATCHED** |
| `everythingisanail` | Everything Is A Nail | **UNMATCHED** |
| `familyvisits` | Family Visits | **UNMATCHED** |
| `foodprocessor` | Food Processor | **UNMATCHED** |
| `greedyincreasingsubsequences` | Greedy Increasing Subsequences | **UNMATCHED** |
| `icouldhavewon` | I Could Have Won | **UNMATCHED** |
| `profitabletrip` | Profitable Trip | **UNMATCHED** |
| `sunandmoon` | Sun and Moon | **UNMATCHED** |
| `trianglecontainment` | Triangle Contaiment | **UNMATCHED** |

---

## Rocky Mountain Regional Contest (2023)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4016](https://solved.ac/problems/archive/contest/4016)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Programming%20Contest%202023](https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Programming%20Contest%202023)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `acomplexproblem` | Acomplexproblem | [https://open.kattis.com/problems/acomplexproblem](https://open.kattis.com/problems/acomplexproblem) |
| `addormultiply` | Add or Multiply | [https://open.kattis.com/problems/addormultiply](https://open.kattis.com/problems/addormultiply) |
| `attendance2` | Attendance2 | [https://open.kattis.com/problems/attendance2](https://open.kattis.com/problems/attendance2) |
| `bombardment` | Bombardment | [https://open.kattis.com/problems/bombardment](https://open.kattis.com/problems/bombardment) |
| `buildingroads` | Building Roads | [https://open.kattis.com/problems/buildingroads](https://open.kattis.com/problems/buildingroads) |
| `dontbefake` | Don’t Be Fake | [https://open.kattis.com/problems/dontbefake](https://open.kattis.com/problems/dontbefake) |
| `gasstation` | Gas Station | [https://open.kattis.com/problems/gasstation](https://open.kattis.com/problems/gasstation) |
| `guesswho` | Guess Who | [https://open.kattis.com/problems/guesswho](https://open.kattis.com/problems/guesswho) |
| `ribbonroad` | Ribbon Road | [https://open.kattis.com/problems/ribbonroad](https://open.kattis.com/problems/ribbonroad) |
| `scientificgrading` | Scientific Grading | [https://open.kattis.com/problems/scientificgrading](https://open.kattis.com/problems/scientificgrading) |
| `sevenup` | Seven Up | [https://open.kattis.com/problems/sevenup](https://open.kattis.com/problems/sevenup) |
| `thwack` | Thwack! | [https://open.kattis.com/problems/thwack](https://open.kattis.com/problems/thwack) |

---

## Rocky Mountain Regional Contest (2024)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4331](https://solved.ac/problems/archive/contest/4331)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Programming%20Contest%202024](https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Programming%20Contest%202024)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `airfaregrants` | Airfare Grants | [https://open.kattis.com/problems/airfaregrants](https://open.kattis.com/problems/airfaregrants) |
| `alwaysknowwhereyourtowelis` | Always Know Where Your Towel Is | [https://open.kattis.com/problems/alwaysknowwhereyourtowelis](https://open.kattis.com/problems/alwaysknowwhereyourtowelis) |
| `bigand` | Big And | [https://open.kattis.com/problems/bigand](https://open.kattis.com/problems/bigand) |
| `emoticons` | Emoticons | [https://open.kattis.com/problems/emoticons2](https://open.kattis.com/problems/emoticons2) |
| `enchantedmaze` | Enchanted Maze | [https://open.kattis.com/problems/enchantedmaze](https://open.kattis.com/problems/enchantedmaze) |
| `garagedoorcode` | Garage Door Code | [https://open.kattis.com/problems/garagedoorcode](https://open.kattis.com/problems/garagedoorcode) |
| `palindromicwordsearch` | Palindromic Word Search | [https://open.kattis.com/problems/palindromicwordsearch](https://open.kattis.com/problems/palindromicwordsearch) |
| `pillowstacking` | Pillow Stacking | [https://open.kattis.com/problems/pillowstacking](https://open.kattis.com/problems/pillowstacking) |
| `rectangletiling` | Rectangle Tiling | [https://open.kattis.com/problems/rectangletiling](https://open.kattis.com/problems/rectangletiling) |
| `rockymountain` | Rocky Mountain | [https://open.kattis.com/problems/rockymountain](https://open.kattis.com/problems/rockymountain) |
| `sandwichart` | Sandwich Art | [https://open.kattis.com/problems/sandwichart](https://open.kattis.com/problems/sandwichart) |
| `sauna` | Sauna | [https://open.kattis.com/problems/sauna](https://open.kattis.com/problems/sauna) |
| `spaceelevator` | Space Elevator | [https://open.kattis.com/problems/spaceelevator](https://open.kattis.com/problems/spaceelevator) |

---

## Rocky Mountain Regional Contest (2025)

* **solved.ac Archive:** None
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Programming%20Contest%202025](https://open.kattis.com/problem-sources/Rocky%20Mountain%20Regional%20Programming%20Contest%202025)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `adriftatsea` | Adrift At Sea | [https://open.kattis.com/problems/adriftatsea](https://open.kattis.com/problems/adriftatsea) |
| `buyingjerseys` | Buying Jerseys | [https://open.kattis.com/problems/buyingjerseys](https://open.kattis.com/problems/buyingjerseys) |
| `conveyorbeltsushi` | Conveyor Belt Sushi | [https://open.kattis.com/problems/conveyorbeltsushi](https://open.kattis.com/problems/conveyorbeltsushi) |
| `corporateretreat` | Corporate Retreat | [https://open.kattis.com/problems/corporateretreat](https://open.kattis.com/problems/corporateretreat) |
| `draftlottery` | Draft Lottery | [https://open.kattis.com/problems/draftlottery](https://open.kattis.com/problems/draftlottery) |
| `energyusage` | Energy Usage | [https://open.kattis.com/problems/energyusage](https://open.kattis.com/problems/energyusage) |
| `genies` | Genies | [https://open.kattis.com/problems/genies](https://open.kattis.com/problems/genies) |
| `hexadecimalconfusion` | Hexadecimal Confusion | [https://open.kattis.com/problems/hexadecimalconfusion](https://open.kattis.com/problems/hexadecimalconfusion) |
| `poetictournament` | Poetic Tournament | [https://open.kattis.com/problems/poetictournament](https://open.kattis.com/problems/poetictournament) |
| `spiesvsspies` | Corporate Retreat | [https://open.kattis.com/problems/corporateretreat](https://open.kattis.com/problems/corporateretreat) |
| `teampractice` | Team Practice | [https://open.kattis.com/problems/teampractice](https://open.kattis.com/problems/teampractice) |
| `videogames` | Video Games | [https://open.kattis.com/problems/videogames](https://open.kattis.com/problems/videogames) |
| `whattimeisitmrfox` | What Time Is It Mr. Fox? | [https://open.kattis.com/problems/whattimeisitmrfox](https://open.kattis.com/problems/whattimeisitmrfox) |

---

## South Central USA Regional Contest (2006)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/173](https://solved.ac/problems/archive/contest/173)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `1` | 11/06/2006 06:04 PM | **UNMATCHED** |
| `2` | 11/06/2006 06:05 PM | **UNMATCHED** |
| `3` | 11/06/2006 06:06 PM | **UNMATCHED** |
| `4` | 11/06/2006 06:06 PM | **UNMATCHED** |
| `5` | 11/06/2006 06:06 PM | **UNMATCHED** |
| `6` | 11/06/2006 06:07 PM | **UNMATCHED** |
| `7` | 11/06/2006 06:07 PM | **UNMATCHED** |
| `8` | 11/06/2006 06:07 PM | **UNMATCHED** |

---

## South Central USA Regional Contest (2007)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/172](https://solved.ac/problems/archive/contest/172)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `1` | One is an Interesting Number | **UNMATCHED** |
| `2` | Verdis Quo | **UNMATCHED** |
| `3` | The Screen Behind the Mirror | **UNMATCHED** |
| `4` | Another Brick in the Wall | **UNMATCHED** |
| `5` | The Sidewinder Sleeps Tonite | **UNMATCHED** |
| `6` | Rout 66 | **UNMATCHED** |
| `7` | Schottkey 7th Path | **UNMATCHED** |
| `8` | Another Version of the Truth | **UNMATCHED** |
| `9` | The Final Countdown | **UNMATCHED** |

---

## South Central USA Regional Contest (2008)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/171](https://solved.ac/problems/archive/contest/171)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `1` | Rank and File | **UNMATCHED** |
| `2` | The Extent of the Problem | **UNMATCHED** |
| `3` | Filtration | **UNMATCHED** |
| `4` | Like Water for Clay | **UNMATCHED** |
| `5` | Wandering Aimlessly | **UNMATCHED** |
| `6` | Cables ... in Spaaace! | **UNMATCHED** |
| `7` | Patterns and Pictures | **UNMATCHED** |
| `8` | No Wormholes Were Harmed... | **UNMATCHED** |
| `9` | Tribute (Editor) | **UNMATCHED** |

---

## South Central USA Regional Contest (2022)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/3507](https://solved.ac/problems/archive/contest/3507)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2022%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2025%2C%202023%29](https://open.kattis.com/problem-sources/2022%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2025%2C%202023%29)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `alchemy` | Alchemy | [https://open.kattis.com/problems/alchemy2](https://open.kattis.com/problems/alchemy2) |
| `blueberrywaffle` | Blueberrywaffle | [https://open.kattis.com/problems/blueberrywaffle](https://open.kattis.com/problems/blueberrywaffle) |
| `branchmanager` | Branch Manager | [https://open.kattis.com/problems/branchmanager](https://open.kattis.com/problems/branchmanager) |
| `chocolatechipfabrication` | Chocolate Chip Fabrication | [https://open.kattis.com/problems/chocolatechipfabrication](https://open.kattis.com/problems/chocolatechipfabrication) |
| `colortubes` | Color Tubes | [https://open.kattis.com/problems/colortubes](https://open.kattis.com/problems/colortubes) |
| `countingsatellites` | Counting Satellites | [https://open.kattis.com/problems/countingsatellites](https://open.kattis.com/problems/countingsatellites) |
| `creativeaccounting` | Creative Accounting | [https://open.kattis.com/problems/creativeaccounting](https://open.kattis.com/problems/creativeaccounting) |
| `erodingpillars` | Eroding Pillars | [https://open.kattis.com/problems/erodingpillars](https://open.kattis.com/problems/erodingpillars) |
| `everythingisanail` | Everythingisanail | [https://open.kattis.com/problems/everythingisanail](https://open.kattis.com/problems/everythingisanail) |
| `exponentexchange` | Exponent Exchange | [https://open.kattis.com/problems/exponentexchange](https://open.kattis.com/problems/exponentexchange) |
| `fadingwind` | Fading Wind | [https://open.kattis.com/problems/fadingwind](https://open.kattis.com/problems/fadingwind) |
| `familyvisits` | Family Visits | [https://open.kattis.com/problems/familyvisits](https://open.kattis.com/problems/familyvisits) |
| `foodprocessor` | Foodprocessor | [https://open.kattis.com/problems/foodprocessor](https://open.kattis.com/problems/foodprocessor) |
| `loneknight` | Lone Knight | [https://open.kattis.com/problems/loneknight](https://open.kattis.com/problems/loneknight) |
| `streetsahead` | Streetsahead | [https://open.kattis.com/problems/streetsahead](https://open.kattis.com/problems/streetsahead) |
| `sunandmoon` | Sunandmoon | [https://open.kattis.com/problems/sunandmoon](https://open.kattis.com/problems/sunandmoon) |
| `threedice` | Three Dice | [https://open.kattis.com/problems/threedice](https://open.kattis.com/problems/threedice) |
| `trianglecontainment` | Triangle Containment | [https://open.kattis.com/problems/trianglecontainment](https://open.kattis.com/problems/trianglecontainment) |

---

## South Central USA Regional Contest (2023)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4159](https://solved.ac/problems/archive/contest/4159)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2023%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2024%2C%202024%29](https://open.kattis.com/problem-sources/2023%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2024%2C%202024%29)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `abcstring` | ABC String | [https://open.kattis.com/problems/abcstring](https://open.kattis.com/problems/abcstring) |
| `acappellarecording` | Acappellarecording | [https://open.kattis.com/problems/acappellarecording](https://open.kattis.com/problems/acappellarecording) |
| `acceptableseatingarrangements` | Acceptableseatingarrangements | [https://open.kattis.com/problems/acceptableseatingarrangements](https://open.kattis.com/problems/acceptableseatingarrangements) |
| `balancedtreepath` | Balanced Tree Path | [https://open.kattis.com/problems/balancedtreepath](https://open.kattis.com/problems/balancedtreepath) |
| `champernowneverification` | Champernowne Verification | [https://open.kattis.com/problems/champernowneverification](https://open.kattis.com/problems/champernowneverification) |
| `crammingforfinals` | Cramming for Finals | [https://open.kattis.com/problems/crammingforfinals](https://open.kattis.com/problems/crammingforfinals) |
| `eccentricexcursion` | Eccentric Excursion | [https://open.kattis.com/problems/eccentricexcursion](https://open.kattis.com/problems/eccentricexcursion) |
| `fourdierolls` | Fourdierolls | [https://open.kattis.com/problems/fourdierolls](https://open.kattis.com/problems/fourdierolls) |
| `itemselection` | Item Selection | [https://open.kattis.com/problems/itemselection](https://open.kattis.com/problems/itemselection) |
| `matrixfraud` | Matrix Fraud | [https://open.kattis.com/problems/matrixfraud](https://open.kattis.com/problems/matrixfraud) |
| `oncallteam` | On-Call Team | [https://open.kattis.com/problems/oncallteam](https://open.kattis.com/problems/oncallteam) |
| `orderedproblemset` | Orderedproblemset | [https://open.kattis.com/problems/orderedproblemset](https://open.kattis.com/problems/orderedproblemset) |
| `rampantgrowth` | Rampantgrowth | [https://open.kattis.com/problems/rampantgrowth](https://open.kattis.com/problems/rampantgrowth) |
| `rangeediting` | Range Editing | [https://open.kattis.com/problems/rangeediting](https://open.kattis.com/problems/rangeediting) |
| `segmentdrawing` | Segment Drawing | [https://open.kattis.com/problems/segmentdrawing](https://open.kattis.com/problems/segmentdrawing) |
| `sequenceguessing` | Sequence Guessing | [https://open.kattis.com/problems/sequenceguessing](https://open.kattis.com/problems/sequenceguessing) |
| `streetsbehind` | Streets Behind | [https://open.kattis.com/problems/streetsbehind](https://open.kattis.com/problems/streetsbehind) |
| `training` | Training | [https://open.kattis.com/problems/training](https://open.kattis.com/problems/training) |
| `triplesevens` | Triplesevens | [https://open.kattis.com/problems/triplesevens](https://open.kattis.com/problems/triplesevens) |

---

## South Central USA Regional Contest (2024)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4675](https://solved.ac/problems/archive/contest/4675)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2024%20ICPC%20South%20Central%2C%20South%20East%20and%20Mid%20Atlantic%20Regional%20%28November%2016%2C%202024%29](https://open.kattis.com/problem-sources/2024%20ICPC%20South%20Central%2C%20South%20East%20and%20Mid%20Atlantic%20Regional%20%28November%2016%2C%202024%29)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `citybike` | Citybike | [https://open.kattis.com/problems/citybike](https://open.kattis.com/problems/citybike) |
| `duelofcards` | Duel of Cards | [https://open.kattis.com/problems/duelofcards](https://open.kattis.com/problems/duelofcards) |
| `elevatedrails` | Elevatedrails | [https://open.kattis.com/problems/elevatedrails](https://open.kattis.com/problems/elevatedrails) |
| `findingkeys` | Findingkeys | [https://open.kattis.com/problems/findingkeys](https://open.kattis.com/problems/findingkeys) |
| `herbmixing` | Herb Mixing | [https://open.kattis.com/problems/herbmixing](https://open.kattis.com/problems/herbmixing) |
| `intergalacticteam` | Intergalactic Team | [https://open.kattis.com/problems/intergalacticteam](https://open.kattis.com/problems/intergalacticteam) |
| `islandmemories` | Island Memories | [https://open.kattis.com/problems/islandmemories](https://open.kattis.com/problems/islandmemories) |
| `memoriesofpassportstamps` | Memories of Passport Stamps | [https://open.kattis.com/problems/memoriesofpassportstamps](https://open.kattis.com/problems/memoriesofpassportstamps) |
| `officebuilding` | Office Building | [https://open.kattis.com/problems/officebuilding](https://open.kattis.com/problems/officebuilding) |
| `optimizedcheating` | Optimized Cheating | [https://open.kattis.com/problems/optimizedcheating](https://open.kattis.com/problems/optimizedcheating) |
| `perfectsquares` | Perfect Squares | [https://open.kattis.com/problems/perfectsquares](https://open.kattis.com/problems/perfectsquares) |
| `pianissimo` | Pianissimo | [https://open.kattis.com/problems/pianissimo](https://open.kattis.com/problems/pianissimo) |
| `trafficlights` | Traffic Lights | [https://open.kattis.com/problems/trafficlights](https://open.kattis.com/problems/trafficlights) |
| `trianglesofasquare` | Triangles of a Square | [https://open.kattis.com/problems/trianglesofasquare](https://open.kattis.com/problems/trianglesofasquare) |
| `virtualrealityplayspace` | Virtualrealityplayspace | [https://open.kattis.com/problems/vrplayspace](https://open.kattis.com/problems/vrplayspace) |
| `welcomesign` | Welcome Sign | [https://open.kattis.com/problems/welcomesign](https://open.kattis.com/problems/welcomesign) |
| `whichoneislarger` | Which One is Larger | [https://open.kattis.com/problems/whichoneislarger](https://open.kattis.com/problems/whichoneislarger) |

---

## South Central USA Regional Contest (2025)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4681](https://solved.ac/problems/archive/contest/4681)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2025%20ICPC%20South%20Central%2C%20South%20East%20and%20Mid%20Atlantic%20Regional%20%28November%208%2C%202025%29](https://open.kattis.com/problem-sources/2025%20ICPC%20South%20Central%2C%20South%20East%20and%20Mid%20Atlantic%20Regional%20%28November%208%2C%202025%29)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `blindbottles` | Blind Bottles | [https://open.kattis.com/problems/blindbottles](https://open.kattis.com/problems/blindbottles) |
| `breakout` | Breakout | [https://open.kattis.com/problems/breakout2](https://open.kattis.com/problems/breakout2) |
| `galaxygovernance` | Galaxygovernance | [https://open.kattis.com/problems/galaxygovernance](https://open.kattis.com/problems/galaxygovernance) |
| `gameofnines` | Game of Nines | [https://open.kattis.com/problems/gameofnines](https://open.kattis.com/problems/gameofnines) |
| `guidgenerator` | GUID Generator | [https://open.kattis.com/problems/guidgenerator](https://open.kattis.com/problems/guidgenerator) |
| `inazumacubedevice` | Inazuma Cube Device | [https://open.kattis.com/problems/inazumacubedevice](https://open.kattis.com/problems/inazumacubedevice) |
| `manhattaninterference` | Manhattaninterference | [https://open.kattis.com/problems/manhattaninterference](https://open.kattis.com/problems/manhattaninterference) |
| `meetingfreefridays` | Meetingfreefridays | [https://open.kattis.com/problems/meetingfreefridays](https://open.kattis.com/problems/meetingfreefridays) |
| `memoriesofpassportcontrol` | Memories of Passport Control | [https://open.kattis.com/problems/memoriesofpassportcontrol](https://open.kattis.com/problems/memoriesofpassportcontrol) |
| `moonlittimemachine` | Moonlit Time Machine | [https://open.kattis.com/problems/moonlittimemachine](https://open.kattis.com/problems/moonlittimemachine) |
| `muchroomformushrooms` | Much Room for Mushrooms | [https://open.kattis.com/problems/muchroomformushrooms](https://open.kattis.com/problems/muchroomformushrooms) |
| `onewayonly` | One Way Only | [https://open.kattis.com/problems/onewayonly](https://open.kattis.com/problems/onewayonly) |
| `orchardfence` | Orchardfence | [https://open.kattis.com/problems/orchardfence](https://open.kattis.com/problems/orchardfence) |
| `photoencoding` | Photo Encoding | [https://open.kattis.com/problems/photoencoding](https://open.kattis.com/problems/photoencoding) |
| `rowsofstars` | Rowsofstars | [https://open.kattis.com/problems/rowsofstars](https://open.kattis.com/problems/rowsofstars) |
| `shinjukustation` | Shinjuku Station | [https://open.kattis.com/problems/shinjukustation](https://open.kattis.com/problems/shinjukustation) |
| `snakeystring` | Snakey String | [https://open.kattis.com/problems/snakeystring](https://open.kattis.com/problems/snakeystring) |
| `swapforpalindrome` | Swap for Palindrome | [https://open.kattis.com/problems/swapforpalindrome](https://open.kattis.com/problems/swapforpalindrome) |
| `treeracing` | Treeracing | [https://open.kattis.com/problems/treeracing](https://open.kattis.com/problems/treeracing) |

---

## Southeastern Europe Regional Contest (2003)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/31](https://solved.ac/problems/archive/contest/31)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | Delta Encoding and Decoding | **UNMATCHED** |
| `B` | Hidden Password | **UNMATCHED** |
| `C` | Crazy tea party | **UNMATCHED** |
| `D` | Supermarket | **UNMATCHED** |
| `E` | Lord of the Ring | **UNMATCHED** |
| `F` | Common Subsequence | **UNMATCHED** |
| `G` | Power Network | **UNMATCHED** |
| `H` | Firefighters | **UNMATCHED** |
| `I` | Binary Polynomials | **UNMATCHED** |
| `Problems_Complete_ACM_2003` | Lord of the Ring | **UNMATCHED** |

---

## Southeastern Europe Regional Contest (2005)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/29](https://solved.ac/problems/archive/contest/29)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | Linear world | **UNMATCHED** |
| `B` | Songs | **UNMATCHED** |
| `C` | Sudoku | **UNMATCHED** |
| `D` | Tour | **UNMATCHED** |
| `E` | Mothy | **UNMATCHED** |
| `F` | Adventurous Driving | **UNMATCHED** |
| `G` | Computer Transformation | **UNMATCHED** |
| `H` | Anagrammatic Distance | **UNMATCHED** |
| `I` | Tomato Automata | **UNMATCHED** |
| `in` | In | **UNMATCHED** |

---

## Southeastern Europe Regional Contest (2006)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/28](https://solved.ac/problems/archive/contest/28)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | Sudoku | **UNMATCHED** |
| `B` | Subsequence | **UNMATCHED** |
| `C` | Celebrity jeopardy | **UNMATCHED** |
| `D` | Sherlock Holmes | **UNMATCHED** |
| `E` | Payment System | **UNMATCHED** |
| `F` | Stargates | **UNMATCHED** |
| `G` | Maximum | **UNMATCHED** |
| `H` | Japan | **UNMATCHED** |
| `I` | “Shortest” pair of paths | **UNMATCHED** |
| `input` | Input | **UNMATCHED** |

---

## Southeastern Europe Regional Contest (2007)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/27](https://solved.ac/problems/archive/contest/27)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | John | **UNMATCHED** |
| `B` | Double Queue | **UNMATCHED** |
| `C` | ‘JBC’ | **UNMATCHED** |
| `D` | Loan Scheduling | **UNMATCHED** |
| `E` | Showstopper | **UNMATCHED** |
| `F` | Highway | **UNMATCHED** |
| `G` | Computers | **UNMATCHED** |
| `H` | The Stable Marriage Problem | **UNMATCHED** |
| `I` | Arne Saknussemm | **UNMATCHED** |
| `Problems2007` | Problems2007 | **UNMATCHED** |

---

## Southeastern Europe Regional Contest (2008)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/26](https://solved.ac/problems/archive/contest/26)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | Stock Exchange | **UNMATCHED** |
| `B` | Sky Code | **UNMATCHED** |
| `C` | Perfect Election | **UNMATCHED** |
| `D` | Lucky cities | **UNMATCHED** |
| `E` | Build Your Home | **UNMATCHED** |
| `F` | Quick answer | **UNMATCHED** |
| `G` | Lucky numbers | **UNMATCHED** |
| `H` | GCD Determinant | **UNMATCHED** |
| `I` | Internet Service Providers | **UNMATCHED** |

---

## Southeastern Europe Regional Contest (2009)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/25](https://solved.ac/problems/archive/contest/25)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | RSA Factorization | **UNMATCHED** |
| `B` | Hard-working Student | **UNMATCHED** |
| `C` | System Engineer | **UNMATCHED** |
| `D` | Cycles of Lanes | **UNMATCHED** |
| `E` | Multiprocessor Scheduling | **UNMATCHED** |
| `F` | Maze Stretching | **UNMATCHED** |
| `G` | Software Industry Revolution | **UNMATCHED** |
| `H` | The Lucky Numbers | **UNMATCHED** |
| `I` | The Robbery | **UNMATCHED** |
| `J` | The Computer Game | **UNMATCHED** |
| `K` | The Bad Number | **UNMATCHED** |

---

## Southeastern Europe Regional Contest (2010)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/24](https://solved.ac/problems/archive/contest/24)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | The Table | **UNMATCHED** |
| `B` | Calculator | **UNMATCHED** |
| `C` | Largest Empty Circle on a Segment | **UNMATCHED** |
| `D` | Problemsetting | **UNMATCHED** |
| `E` | Control Points | **UNMATCHED** |
| `F` | Gamers | **UNMATCHED** |
| `G` | Cosmic Station | **UNMATCHED** |
| `H` | Game | **UNMATCHED** |
| `I` | Proof Generator | **UNMATCHED** |
| `J` | Shares | **UNMATCHED** |

---

## Southeastern Europe Regional Contest (2011)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/23](https://solved.ac/problems/archive/contest/23)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | Secret — MAX | **UNMATCHED** |
| `B` | Safety Grade | **UNMATCHED** |
| `C` | Search by template | **UNMATCHED** |
| `D` | Roots Intervals | **UNMATCHED** |
| `E` | Palindromic Dates | **UNMATCHED** |
| `F` | Post Offices | **UNMATCHED** |
| `G` | Choosing a camera | **UNMATCHED** |
| `H` | Road Planner | **UNMATCHED** |
| `I` | Term Generator | **UNMATCHED** |
| `J` | Painting | **UNMATCHED** |

---

## Southeastern Europe Regional Contest (2012)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/22](https://solved.ac/problems/archive/contest/22)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | Dr Who’s Banquet | **UNMATCHED** |
| `B` | Bitris | **UNMATCHED** |
| `C` | Primes | **UNMATCHED** |
| `D` | Longest Prefix Match | **UNMATCHED** |
| `E` | Stripe | **UNMATCHED** |
| `F` | Maximal Number of Divisors | **UNMATCHED** |
| `G` | Miraculous Drug | **UNMATCHED** |
| `H` | Softville | **UNMATCHED** |
| `I` | Tree | **UNMATCHED** |
| `J` | VAN DINSKY | **UNMATCHED** |

---

## Southeastern Europe Regional Contest (2013)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1149](https://solved.ac/problems/archive/contest/1149)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | Russian Dolls | **UNMATCHED** |
| `B` | Intercity | **UNMATCHED** |
| `C` | Count | **UNMATCHED** |
| `D` | Chess | **UNMATCHED** |
| `E` | A+B | **UNMATCHED** |
| `F` | Dragon Pattern | **UNMATCHED** |
| `G` | Points | **UNMATCHED** |
| `H` | Red John Game | **UNMATCHED** |
| `I` | Influence | **UNMATCHED** |
| `J` | An Idea of Mr. A | **UNMATCHED** |

---

## Southeastern Europe Regional Contest (2014)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1293](https://solved.ac/problems/archive/contest/1293)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | Banks | **UNMATCHED** |
| `B` | Circle of digits | **UNMATCHED** |
| `C` | UFO | **UNMATCHED** |
| `D` | Frame | **UNMATCHED** |
| `E` | Points | **UNMATCHED** |
| `F` | Most Influential Pumpkin | **UNMATCHED** |
| `G` | Grammar | **UNMATCHED** |
| `H` | Triples | **UNMATCHED** |
| `I` | Multi-Machine Scheduling of Two Applications | **UNMATCHED** |
| `J` | Strange Antennas | **UNMATCHED** |

---

## Southeastern Europe Regional Contest (2015)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1407](https://solved.ac/problems/archive/contest/1407)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `B` | Tree of Almost Clean Money | **UNMATCHED** |
| `C` | Primes | **UNMATCHED** |
| `D` | LCM | **UNMATCHED** |
| `E` | Taxies | **UNMATCHED** |
| `F` | Irrational Roots | **UNMATCHED** |
| `G` | Race | **UNMATCHED** |
| `H` | Railway Tickets | **UNMATCHED** |
| `I` | Olympic Parade | **UNMATCHED** |
| `J` | Word by mouth | **UNMATCHED** |

---

## Southeastern Europe Regional Contest (2016)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1571](https://solved.ac/problems/archive/contest/1571)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | Three Squares | **UNMATCHED** |
| `B` | Favorite music | **UNMATCHED** |
| `C` | Castle | **UNMATCHED** |
| `D` | Reading Digits | **UNMATCHED** |
| `E` | Exam | **UNMATCHED** |
| `F` | Letters | **UNMATCHED** |
| `G` | Pokemons | **UNMATCHED** |
| `H` | Pub crawl | **UNMATCHED** |
| `I` | Cubes | **UNMATCHED** |
| `J` | Marathon | **UNMATCHED** |
| `K` | Cutting | **UNMATCHED** |
| `acm2016problems` | Three Squares | **UNMATCHED** |

---

## Southeastern Europe Regional Contest (2019)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2110](https://solved.ac/problems/archive/contest/2110)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `abs-game` | Abs Game | **UNMATCHED** |
| `alice-bob-cycle` | Alice Bob Cycle | **UNMATCHED** |
| `levelup` | Level Up | **UNMATCHED** |
| `life-transfer` | Life Transfer | **UNMATCHED** |
| `min-max-circle` | Min Max Circle | **UNMATCHED** |
| `projection` | Projection | **UNMATCHED** |
| `seerc-2019-find-array` | Seerc 2019 Find Array | **UNMATCHED** |
| `seerc-2019-graph-cycles` | Seerc 2019 Graph Cycles | **UNMATCHED** |
| `seerc-2019-super-hard` | Seerc 2019 Super Hard | **UNMATCHED** |
| `seerc-2019-tree-perm` | Seerc 2019 Tree Perm | **UNMATCHED** |
| `stranded-robot` | Stranded Robot | **UNMATCHED** |

---

## Southeastern Europe Regional Contest (2020)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2566](https://solved.ac/problems/archive/contest/2566)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `a-diggers` | Diggers | **UNMATCHED** |
| `b-reverse-game` | Reverse Game | **UNMATCHED** |
| `c-3-colorings-output-only` | 3 Colorings Output Only | **UNMATCHED** |
| `d-disksort` | Disksort | **UNMATCHED** |
| `e-divisible-by-3` | Divisible By 3 | **UNMATCHED** |
| `f-countmin` | Countmin | **UNMATCHED** |
| `g-simplehull` | Simplehull | **UNMATCHED** |
| `h-and-or` | And Or | **UNMATCHED** |
| `i-mod-permutations` | Mod Permutations | **UNMATCHED** |
| `j-onepiece` | Onepiece | **UNMATCHED** |
| `k-codenames` | Codenames | **UNMATCHED** |
| `l-neorobin` | Neorobin | **UNMATCHED** |
| `m-mistake` | Mistake | **UNMATCHED** |

---

## Southeast USA Regional Contest (2008)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/180](https://solved.ac/problems/archive/contest/180)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `circuits` | Circuits | **UNMATCHED** |
| `heart` | Heart | **UNMATCHED** |
| `lawrence` | Lawrence | **UNMATCHED** |
| `levees` | Levees | **UNMATCHED** |
| `lock` | Lock | **UNMATCHED** |
| `lotto` | Lotto | **UNMATCHED** |
| `nowin` | Nowin | **UNMATCHED** |
| `park` | Park | **UNMATCHED** |
| `teleport` | Teleport | **UNMATCHED** |
| `worms` | Worms | **UNMATCHED** |

---

## Southeast USA Regional Contest (2009)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/179](https://solved.ac/problems/archive/contest/179)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `area` | Area | **UNMATCHED** |
| `blockgame` | Blockgame | **UNMATCHED** |
| `euclid` | Euclid | **UNMATCHED** |
| `greater` | Greater | **UNMATCHED** |
| `guards` | Guards | **UNMATCHED** |
| `knitting` | Knitting | **UNMATCHED** |
| `minesweeper` | Minesweeper | **UNMATCHED** |
| `mosaic` | Mosaic | **UNMATCHED** |
| `museum` | Museum | **UNMATCHED** |
| `ninjaway` | Ninjaway | **UNMATCHED** |
| `pooltable` | Pooltable | **UNMATCHED** |
| `robotchallenge` | Robotchallenge | **UNMATCHED** |
| `vowels` | Vowels | **UNMATCHED** |

---

## Southeast USA Regional Contest (2010)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/178](https://solved.ac/problems/archive/contest/178)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `balloons` | Balloons | **UNMATCHED** |
| `bitcounting` | Bitcounting | **UNMATCHED** |
| `datarecovery` | Datarecovery | **UNMATCHED** |
| `equalangles` | Equalangles | **UNMATCHED** |
| `maximumsquare` | Maximumsquare | **UNMATCHED** |
| `palindrometer` | Palindrometer | **UNMATCHED** |
| `profits` | Profits | **UNMATCHED** |
| `rollercoaster` | Rollercoaster | **UNMATCHED** |
| `skyline` | Skyline | **UNMATCHED** |
| `undergroundcables` | Undergroundcables | **UNMATCHED** |

---

## Southeast USA Regional Contest (2011)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/177](https://solved.ac/problems/archive/contest/177)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `burnout` | Burnout | **UNMATCHED** |
| `difference` | Difference | **UNMATCHED** |
| `family` | Family | **UNMATCHED** |
| `flooringtiles` | Flooringtiles | **UNMATCHED** |
| `folding` | Folding | **UNMATCHED** |
| `hexagram` | Hexagram | **UNMATCHED** |
| `movingpoints` | Movingpoints | **UNMATCHED** |
| `robotnavigation` | Robotnavigation | **UNMATCHED** |
| `sundaydrive` | Sundaydrive | **UNMATCHED** |
| `vampirenumbers` | Vampirenumbers | **UNMATCHED** |

---

## Southeast USA Regional Contest (2012)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/176](https://solved.ac/problems/archive/contest/176)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `candystore` | Candystore | **UNMATCHED** |
| `collisiondetection` | Collisiondetection | **UNMATCHED** |
| `componenttesting` | Componenttesting | **UNMATCHED** |
| `doitwrong` | Doitwrong | **UNMATCHED** |
| `duelingphilosophers` | Duelingphilosophers | **UNMATCHED** |
| `funhouse` | Funhouse | **UNMATCHED** |
| `grimm` | Grimm | **UNMATCHED** |
| `headsortails` | Headsortails | **UNMATCHED** |
| `paintme` | Paintme | **UNMATCHED** |
| `partygames` | Partygames | **UNMATCHED** |
| `reversenonogram` | Reversenonogram | **UNMATCHED** |
| `tsunami` | Tsunami | **UNMATCHED** |
| `unhappy` | Unhappy | **UNMATCHED** |
| `walls` | Walls | **UNMATCHED** |

---

## Southeast USA Regional Contest (2013)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1171](https://solved.ac/problems/archive/contest/1171)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `cake` | Cake | **UNMATCHED** |
| `christmas` | Christmas | **UNMATCHED** |
| `cousins` | Cousins | **UNMATCHED** |
| `decimal` | Decimal | **UNMATCHED** |
| `mountains` | Mountains | **UNMATCHED** |
| `nested` | Nested | **UNMATCHED** |
| `ping` | Ping | **UNMATCHED** |
| `politics` | Politics | **UNMATCHED** |
| `rally` | Rally | **UNMATCHED** |
| `shuffle` | Shuffle | **UNMATCHED** |
| `skyscrapers` | Skyscrapers | **UNMATCHED** |
| `speed` | Speed | **UNMATCHED** |
| `stars` | Stars | **UNMATCHED** |
| `tandem` | Tandem | **UNMATCHED** |
| `textroll` | Textroll | **UNMATCHED** |
| `triangles` | Triangles | **UNMATCHED** |
| `village` | Village | **UNMATCHED** |
| `youwin` | Youwin | **UNMATCHED** |

---

## Southeast USA Regional Contest (2014)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1388](https://solved.ac/problems/archive/contest/1388)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2014%20Southeast%20USA%20Regionals%20Division%201](https://open.kattis.com/problem-sources/2014%20Southeast%20USA%20Regionals%20Division%201)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `alchemy` | Alchemy | [https://open.kattis.com/problems/alchemy](https://open.kattis.com/problems/alchemy) |
| `carpet` | Carpet | [https://open.kattis.com/problems/carpet](https://open.kattis.com/problems/carpet) |
| `containment` | Containment | [https://open.kattis.com/problems/containment](https://open.kattis.com/problems/containment) |
| `goldleaf` | Goldleaf | [https://open.kattis.com/problems/goldleaf](https://open.kattis.com/problems/goldleaf) |
| `hillnumbers` | Hillnumbers | [https://open.kattis.com/problems/hillnumbers](https://open.kattis.com/problems/hillnumbers) |
| `knightmoves` | Knightmoves | [https://open.kattis.com/problems/knights](https://open.kattis.com/problems/knights) |
| `knights` | Knights | [https://open.kattis.com/problems/knights](https://open.kattis.com/problems/knights) |
| `ladder` | Ladder | **UNMATCHED** |
| `marbles` | Marbles | **UNMATCHED** |
| `polling` | Polling | **UNMATCHED** |
| `runes` | Runes | **UNMATCHED** |
| `shuffles` | Shuffles | [https://open.kattis.com/problems/shuffles](https://open.kattis.com/problems/shuffles) |
| `stampstamp` | Stampstamp | [https://open.kattis.com/problems/stampstamp](https://open.kattis.com/problems/stampstamp) |
| `top25` | Top25 | **UNMATCHED** |

---

## Southeast USA Regional Contest (2015)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1429](https://solved.ac/problems/archive/contest/1429)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2015%20Southeast%20USA%20Regionals%20Division%201](https://open.kattis.com/problem-sources/2015%20Southeast%20USA%20Regionals%20Division%201)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `airports` | Airports | [https://open.kattis.com/problems/airports](https://open.kattis.com/problems/airports) |
| `blur` | Blur | **UNMATCHED** |
| `checkers` | Checkers | [https://open.kattis.com/problems/checkers](https://open.kattis.com/problems/checkers) |
| `classy` | Classy | **UNMATCHED** |
| `coverage` | Coverage | [https://open.kattis.com/problems/coverage](https://open.kattis.com/problems/coverage) |
| `eggdrop` | Eggdrop | **UNMATCHED** |
| `excellence` | Excellence | **UNMATCHED** |
| `gears` | Gears | [https://open.kattis.com/problems/gears2](https://open.kattis.com/problems/gears2) |
| `grid` | Grid | [https://open.kattis.com/problems/grid](https://open.kattis.com/problems/grid) |
| `hilbert` | Hilbert | [https://open.kattis.com/problems/hilbertsort](https://open.kattis.com/problems/hilbertsort) |
| `magical3` | Magical3 | **UNMATCHED** |
| `persistence` | Persistence | **UNMATCHED** |
| `racinggems` | Racinggems | [https://open.kattis.com/problems/racinggems](https://open.kattis.com/problems/racinggems) |
| `simplicity` | Simplicity | [https://open.kattis.com/problems/simplicity](https://open.kattis.com/problems/simplicity) |
| `triangles` | Triangles | **UNMATCHED** |
| `weightlifting` | Weightlifting | [https://open.kattis.com/problems/weightlifting](https://open.kattis.com/problems/weightlifting) |
| `xedni` | Xedni | **UNMATCHED** |

---

## Southeast USA Regional Contest (2016)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1559](https://solved.ac/problems/archive/contest/1559)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2016%20Southeast%20USA%20Regionals%20Division%201](https://open.kattis.com/problem-sources/2016%20Southeast%20USA%20Regionals%20Division%201)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `alphabet` | Alphabet | [https://open.kattis.com/problems/alphabet](https://open.kattis.com/problems/alphabet) |
| `barbells` | Barbells | **UNMATCHED** |
| `basesums` | Base Sums | **UNMATCHED** |
| `buggy` | Buggy Robot | [https://open.kattis.com/problems/buggyrobot2](https://open.kattis.com/problems/buggyrobot2) |
| `cab` | As Easy As C-A-B | **UNMATCHED** |
| `enclosure` | Enclosure | [https://open.kattis.com/problems/enclosure](https://open.kattis.com/problems/enclosure) |
| `gravity` | Gravity | **UNMATCHED** |
| `histogram` | Histogram | **UNMATCHED** |
| `illumination` | Illumination | [https://open.kattis.com/problems/illumination](https://open.kattis.com/problems/illumination) |
| `intents` | InTents | [https://open.kattis.com/problems/intents](https://open.kattis.com/problems/intents) |
| `islands` | Islands | [https://open.kattis.com/problems/islands3](https://open.kattis.com/problems/islands3) |
| `paint` | Paint | [https://open.kattis.com/problems/paint](https://open.kattis.com/problems/paint) |
| `panoptes` | Project Panoptes | **UNMATCHED** |
| `periodic` | Periodic Strings | [https://open.kattis.com/problems/periodicstrings](https://open.kattis.com/problems/periodicstrings) |
| `socks` | Mismatched Socks | **UNMATCHED** |
| `threesq` | It Takes Three | **UNMATCHED** |
| `water` | Water | [https://open.kattis.com/problems/water](https://open.kattis.com/problems/water) |
| `zigzag` | Zigzag | [https://open.kattis.com/problems/zigzag2](https://open.kattis.com/problems/zigzag2) |

---

## Southeast USA Regional Contest (2017)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1793](https://solved.ac/problems/archive/contest/1793)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2017%20ICPC%20Mid-Atlantic%20Regional%20Contest](https://open.kattis.com/problem-sources/2017%20ICPC%20Mid-Atlantic%20Regional%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `congruent` | Congruent | **UNMATCHED** |
| `die` | Die | **UNMATCHED** |
| `ducks` | Ducks | **UNMATCHED** |
| `exciting` | Exciting | **UNMATCHED** |
| `flipping` | Flipping | **UNMATCHED** |
| `halfway` | Halfway | **UNMATCHED** |
| `haybales` | Haybales | **UNMATCHED** |
| `law11` | Law11 | **UNMATCHED** |
| `longlong` | Longlong | [https://open.kattis.com/problems/longlongstrings](https://open.kattis.com/problems/longlongstrings) |
| `moveaway` | Moveaway | **UNMATCHED** |
| `purple` | Purple | [https://open.kattis.com/problems/purplerain](https://open.kattis.com/problems/purplerain) |
| `rainbow` | Rainbow | [https://open.kattis.com/problems/rainbowroads](https://open.kattis.com/problems/rainbowroads) |
| `security` | Security | [https://open.kattis.com/problems/securitybadge](https://open.kattis.com/problems/securitybadge) |
| `sequences` | Sequences | **UNMATCHED** |
| `stars` | Stars | [https://open.kattis.com/problems/stararrangements](https://open.kattis.com/problems/stararrangements) |
| `treasure` | Treasure | **UNMATCHED** |
| `unsatisfying` | Unsatisfying | **UNMATCHED** |

---

## Southeast USA Regional Contest (2018)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1947](https://solved.ac/problems/archive/contest/1947)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `abstractart` | Abstractart | **UNMATCHED** |
| `bits` | Bits | **UNMATCHED** |
| `exam` | Exam | **UNMATCHED** |
| `goatrope` | Goatrope | **UNMATCHED** |
| `goldbach` | Goldbach | **UNMATCHED** |
| `illiteracy` | Illiteracy | **UNMATCHED** |
| `inversions` | Inversions | **UNMATCHED** |
| `knockout` | Knockout | **UNMATCHED** |
| `mobilization` | Mobilization | **UNMATCHED** |
| `paper` | Paper | **UNMATCHED** |
| `rectangles` | Rectangles | **UNMATCHED** |
| `rivs` | Random Index Vectors | **UNMATCHED** |
| `rug` | Rug | **UNMATCHED** |
| `sculpture` | Sculpture | **UNMATCHED** |
| `timelimits` | Timelimits | **UNMATCHED** |
| `truth` | Truth | **UNMATCHED** |

---

## Southeast USA Regional Contest (2019)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2113](https://solved.ac/problems/archive/contest/2113)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2019%20ICPC%20Southeast%20USA%20Regional%20Programming%20Contest](https://open.kattis.com/problem-sources/2019%20ICPC%20Southeast%20USA%20Regional%20Programming%20Contest)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `animals` | Animals | **UNMATCHED** |
| `atob` | From A to B | [https://open.kattis.com/problems/fromatob](https://open.kattis.com/problems/fromatob) |
| `cache` | Cache | **UNMATCHED** |
| `carryless` | Carryless | **UNMATCHED** |
| `checkerboard` | Checkerboard | **UNMATCHED** |
| `elven` | Elven | **UNMATCHED** |
| `evenorodd` | Evenorodd | **UNMATCHED** |
| `fixedpoint` | Fixedpoint | **UNMATCHED** |
| `glowpixel` | Glowpixel | **UNMATCHED** |
| `interstellar` | Interstellar | **UNMATCHED** |
| `jumping` | Jumping | **UNMATCHED** |
| `levenshtein` | Levenshtein | **UNMATCHED** |
| `maze` | Maze | **UNMATCHED** |
| `oneofeach` | Oneofeach | **UNMATCHED** |
| `rainbow` | Rainbow | **UNMATCHED** |
| `remorse` | Remorse | **UNMATCHED** |
| `swapfree` | Swapfree | **UNMATCHED** |
| `windmill` | Windmill | **UNMATCHED** |

---

## Southeast USA Regional Contest (2020)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2455](https://solved.ac/problems/archive/contest/2455)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2020%20ICPC%20North%20America%20Regionals%20%28March%206%202021%29](https://open.kattis.com/problem-sources/2020%20ICPC%20North%20America%20Regionals%20%28March%206%202021%29)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `ant` | Ant Typing | [https://open.kattis.com/problems/anttyping](https://open.kattis.com/problems/anttyping) |
| `atlas1d` | TripTik | [https://open.kattis.com/problems/triptik](https://open.kattis.com/problems/triptik) |
| `badpacking` | Bad Packing | [https://open.kattis.com/problems/badpacking](https://open.kattis.com/problems/badpacking) |
| `bitonicordering` | Bitonic Ordering | [https://open.kattis.com/problems/bitonicordering](https://open.kattis.com/problems/bitonicordering) |
| `condorcet` | Condorcet | [https://open.kattis.com/problems/condorcet](https://open.kattis.com/problems/condorcet) |
| `diagonaldivision` | Dominating Duos | [https://open.kattis.com/problems/dominatingduos](https://open.kattis.com/problems/dominatingduos) |
| `exam` | Exam | [https://open.kattis.com/problems/exammanipulation](https://open.kattis.com/problems/exammanipulation) |
| `excitingtournament` | Exciting Tournament | [https://open.kattis.com/problems/excitingtournament](https://open.kattis.com/problems/excitingtournament) |
| `kthsubtree` | Kth Subtree | [https://open.kattis.com/problems/kthsubtree](https://open.kattis.com/problems/kthsubtree) |
| `lcs` | Longest Common Subsequence | [https://open.kattis.com/problems/longestcommonsubsequence](https://open.kattis.com/problems/longestcommonsubsequence) |
| `magic` | Magic | [https://open.kattis.com/problems/magictrick](https://open.kattis.com/problems/magictrick) |
| `missing` | Missing | [https://open.kattis.com/problems/missingnumber](https://open.kattis.com/problems/missingnumber) |
| `rainbownumbers` | Rainbow Numbers | [https://open.kattis.com/problems/rainbownumbers](https://open.kattis.com/problems/rainbownumbers) |
| `rating` | Rating | [https://open.kattis.com/problems/ratingproblems](https://open.kattis.com/problems/ratingproblems) |
| `triangular` | Triangular | [https://open.kattis.com/problems/triangularcollection](https://open.kattis.com/problems/triangularcollection) |
| `unread` | Unread | [https://open.kattis.com/problems/unreadmessages](https://open.kattis.com/problems/unreadmessages) |

---

## Southeast USA Regional Contest (2021)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/3522](https://solved.ac/problems/archive/contest/3522)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2021%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28March%205%202022%29](https://open.kattis.com/problem-sources/2021%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28March%205%202022%29)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `averagecharacter` | Average Character | [https://open.kattis.com/problems/averagecharacter](https://open.kattis.com/problems/averagecharacter) |
| `blackandwhite` | Black and White | [https://open.kattis.com/problems/blackandwhite](https://open.kattis.com/problems/blackandwhite) |
| `circlebounce` | Circlebounce | [https://open.kattis.com/problems/circlebounce](https://open.kattis.com/problems/circlebounce) |
| `diagonals` | Diagonals | [https://open.kattis.com/problems/diagonals](https://open.kattis.com/problems/diagonals) |
| `dormroomdivide` | Dorm Room Divide | [https://open.kattis.com/problems/dormroomdivide](https://open.kattis.com/problems/dormroomdivide) |
| `doublepassword` | Double Password | [https://open.kattis.com/problems/doublepassword](https://open.kattis.com/problems/doublepassword) |
| `failthemall` | Failthemall | [https://open.kattis.com/problems/failthemall](https://open.kattis.com/problems/failthemall) |
| `hopscotch500` | Hopscotch500 | [https://open.kattis.com/problems/hopscotch500](https://open.kattis.com/problems/hopscotch500) |
| `overdraft` | Overdraft | [https://open.kattis.com/problems/overdraft](https://open.kattis.com/problems/overdraft) |
| `riseandfall` | Rise and Fall | [https://open.kattis.com/problems/riseandfall](https://open.kattis.com/problems/riseandfall) |
| `shortestmissingsubsequences` | Shortestmissingsubsequences | [https://open.kattis.com/problems/shortestmissingsubsequences](https://open.kattis.com/problems/shortestmissingsubsequences) |
| `squarebounce` | Square Bounce | [https://open.kattis.com/problems/squarebounce](https://open.kattis.com/problems/squarebounce) |
| `tetrisgeneration` | Tetris Generation | [https://open.kattis.com/problems/tetrisgeneration](https://open.kattis.com/problems/tetrisgeneration) |
| `tournamentseeding` | Tournament Seeding | [https://open.kattis.com/problems/tournamentseeding](https://open.kattis.com/problems/tournamentseeding) |
| `treehopping` | Tree Hopping | [https://open.kattis.com/problems/treehopping](https://open.kattis.com/problems/treehopping) |
| `whogoesthere` | Who Goes There? | [https://open.kattis.com/problems/whogoesthere](https://open.kattis.com/problems/whogoesthere) |
| `xorisland` | Xorisland | [https://open.kattis.com/problems/xorisland](https://open.kattis.com/problems/xorisland) |

---

## Southeast USA Regional Contest (2022)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/3508](https://solved.ac/problems/archive/contest/3508)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2022%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2025%2C%202023%29](https://open.kattis.com/problem-sources/2022%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2025%2C%202023%29)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `alchemy` | Alchemy | [https://open.kattis.com/problems/alchemy2](https://open.kattis.com/problems/alchemy2) |
| `blueberrywaffle` | Blueberrywaffle | [https://open.kattis.com/problems/blueberrywaffle](https://open.kattis.com/problems/blueberrywaffle) |
| `branchmanager` | Branch Manager | [https://open.kattis.com/problems/branchmanager](https://open.kattis.com/problems/branchmanager) |
| `chocolatechipfabrication` | Chocolate Chip Fabrication | [https://open.kattis.com/problems/chocolatechipfabrication](https://open.kattis.com/problems/chocolatechipfabrication) |
| `colortubes` | Color Tubes | [https://open.kattis.com/problems/colortubes](https://open.kattis.com/problems/colortubes) |
| `countingsatellites` | Counting Satellites | [https://open.kattis.com/problems/countingsatellites](https://open.kattis.com/problems/countingsatellites) |
| `creativeaccounting` | Creative Accounting | [https://open.kattis.com/problems/creativeaccounting](https://open.kattis.com/problems/creativeaccounting) |
| `erodingpillars` | Eroding Pillars | [https://open.kattis.com/problems/erodingpillars](https://open.kattis.com/problems/erodingpillars) |
| `everythingisanail` | Everythingisanail | [https://open.kattis.com/problems/everythingisanail](https://open.kattis.com/problems/everythingisanail) |
| `exponentexchange` | Exponent Exchange | [https://open.kattis.com/problems/exponentexchange](https://open.kattis.com/problems/exponentexchange) |
| `fadingwind` | Fading Wind | [https://open.kattis.com/problems/fadingwind](https://open.kattis.com/problems/fadingwind) |
| `familyvisits` | Family Visits | [https://open.kattis.com/problems/familyvisits](https://open.kattis.com/problems/familyvisits) |
| `foodprocessor` | Foodprocessor | [https://open.kattis.com/problems/foodprocessor](https://open.kattis.com/problems/foodprocessor) |
| `loneknight` | Lone Knight | [https://open.kattis.com/problems/loneknight](https://open.kattis.com/problems/loneknight) |
| `streetsahead` | Streetsahead | [https://open.kattis.com/problems/streetsahead](https://open.kattis.com/problems/streetsahead) |
| `sunandmoon` | Sunandmoon | [https://open.kattis.com/problems/sunandmoon](https://open.kattis.com/problems/sunandmoon) |
| `threedice` | Three Dice | [https://open.kattis.com/problems/threedice](https://open.kattis.com/problems/threedice) |
| `trianglecontainment` | Triangle Containment | [https://open.kattis.com/problems/trianglecontainment](https://open.kattis.com/problems/trianglecontainment) |

---

## Southeast USA Regional Contest (2023)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4163](https://solved.ac/problems/archive/contest/4163)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2023%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2024%2C%202024%29](https://open.kattis.com/problem-sources/2023%20ICPC%20North%20America%20Regional%20Programming%20Contests%20%28February%2024%2C%202024%29)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `abcstring` | ABC String | [https://open.kattis.com/problems/abcstring](https://open.kattis.com/problems/abcstring) |
| `acappellarecording` | Acappellarecording | [https://open.kattis.com/problems/acappellarecording](https://open.kattis.com/problems/acappellarecording) |
| `acceptableseatingarrangements` | Acceptableseatingarrangements | [https://open.kattis.com/problems/acceptableseatingarrangements](https://open.kattis.com/problems/acceptableseatingarrangements) |
| `balancedtreepath` | Balanced Tree Path | [https://open.kattis.com/problems/balancedtreepath](https://open.kattis.com/problems/balancedtreepath) |
| `champernowneverification` | Champernowne Verification | [https://open.kattis.com/problems/champernowneverification](https://open.kattis.com/problems/champernowneverification) |
| `crammingforfinals` | Cramming for Finals | [https://open.kattis.com/problems/crammingforfinals](https://open.kattis.com/problems/crammingforfinals) |
| `eccentricexcursion` | Eccentric Excursion | [https://open.kattis.com/problems/eccentricexcursion](https://open.kattis.com/problems/eccentricexcursion) |
| `fourdierolls` | Fourdierolls | [https://open.kattis.com/problems/fourdierolls](https://open.kattis.com/problems/fourdierolls) |
| `itemselection` | Item Selection | [https://open.kattis.com/problems/itemselection](https://open.kattis.com/problems/itemselection) |
| `matrixfraud` | Matrix Fraud | [https://open.kattis.com/problems/matrixfraud](https://open.kattis.com/problems/matrixfraud) |
| `oncallteam` | On-Call Team | [https://open.kattis.com/problems/oncallteam](https://open.kattis.com/problems/oncallteam) |
| `orderedproblemset` | Orderedproblemset | [https://open.kattis.com/problems/orderedproblemset](https://open.kattis.com/problems/orderedproblemset) |
| `rampantgrowth` | Rampantgrowth | [https://open.kattis.com/problems/rampantgrowth](https://open.kattis.com/problems/rampantgrowth) |
| `rangeediting` | Range Editing | [https://open.kattis.com/problems/rangeediting](https://open.kattis.com/problems/rangeediting) |
| `segmentdrawing` | Segment Drawing | [https://open.kattis.com/problems/segmentdrawing](https://open.kattis.com/problems/segmentdrawing) |
| `sequenceguessing` | Sequence Guessing | [https://open.kattis.com/problems/sequenceguessing](https://open.kattis.com/problems/sequenceguessing) |
| `streetsbehind` | Streets Behind | [https://open.kattis.com/problems/streetsbehind](https://open.kattis.com/problems/streetsbehind) |
| `training` | Training | [https://open.kattis.com/problems/training](https://open.kattis.com/problems/training) |
| `triplesevens` | Triplesevens | [https://open.kattis.com/problems/triplesevens](https://open.kattis.com/problems/triplesevens) |

---

## Southeast USA Regional Contest (2024)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4349](https://solved.ac/problems/archive/contest/4349)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2024%20ICPC%20South%20Central%2C%20South%20East%20and%20Mid%20Atlantic%20Regional%20%28November%2016%2C%202024%29](https://open.kattis.com/problem-sources/2024%20ICPC%20South%20Central%2C%20South%20East%20and%20Mid%20Atlantic%20Regional%20%28November%2016%2C%202024%29)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `citybike` | Citybike | [https://open.kattis.com/problems/citybike](https://open.kattis.com/problems/citybike) |
| `duelofcards` | Duel of Cards | [https://open.kattis.com/problems/duelofcards](https://open.kattis.com/problems/duelofcards) |
| `elevatedrails` | Elevatedrails | [https://open.kattis.com/problems/elevatedrails](https://open.kattis.com/problems/elevatedrails) |
| `findingkeys` | Findingkeys | [https://open.kattis.com/problems/findingkeys](https://open.kattis.com/problems/findingkeys) |
| `herbmixing` | Herb Mixing | [https://open.kattis.com/problems/herbmixing](https://open.kattis.com/problems/herbmixing) |
| `intergalacticteam` | Intergalactic Team | [https://open.kattis.com/problems/intergalacticteam](https://open.kattis.com/problems/intergalacticteam) |
| `islandmemories` | Island Memories | [https://open.kattis.com/problems/islandmemories](https://open.kattis.com/problems/islandmemories) |
| `memoriesofpassportstamps` | Memories of Passport Stamps | [https://open.kattis.com/problems/memoriesofpassportstamps](https://open.kattis.com/problems/memoriesofpassportstamps) |
| `officebuilding` | Office Building | [https://open.kattis.com/problems/officebuilding](https://open.kattis.com/problems/officebuilding) |
| `optimizedcheating` | Optimized Cheating | [https://open.kattis.com/problems/optimizedcheating](https://open.kattis.com/problems/optimizedcheating) |
| `perfectsquares` | Perfect Squares | [https://open.kattis.com/problems/perfectsquares](https://open.kattis.com/problems/perfectsquares) |
| `pianissimo` | Pianissimo | [https://open.kattis.com/problems/pianissimo](https://open.kattis.com/problems/pianissimo) |
| `trafficlights` | Traffic Lights | [https://open.kattis.com/problems/trafficlights](https://open.kattis.com/problems/trafficlights) |
| `trianglesofasquare` | Triangles of a Square | [https://open.kattis.com/problems/trianglesofasquare](https://open.kattis.com/problems/trianglesofasquare) |
| `virtualrealityplayspace` | Virtualrealityplayspace | [https://open.kattis.com/problems/vrplayspace](https://open.kattis.com/problems/vrplayspace) |
| `welcomesign` | Welcome Sign | [https://open.kattis.com/problems/welcomesign](https://open.kattis.com/problems/welcomesign) |
| `whichoneislarger` | Which One is Larger | [https://open.kattis.com/problems/whichoneislarger](https://open.kattis.com/problems/whichoneislarger) |

---

## Southeast USA Regional Contest (2025)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4679](https://solved.ac/problems/archive/contest/4679)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/2025%20ICPC%20South%20Central%2C%20South%20East%20and%20Mid%20Atlantic%20Regional%20%28November%208%2C%202025%29](https://open.kattis.com/problem-sources/2025%20ICPC%20South%20Central%2C%20South%20East%20and%20Mid%20Atlantic%20Regional%20%28November%208%2C%202025%29)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `blindbottles` | Blind Bottles | [https://open.kattis.com/problems/blindbottles](https://open.kattis.com/problems/blindbottles) |
| `breakout` | Breakout | [https://open.kattis.com/problems/breakout2](https://open.kattis.com/problems/breakout2) |
| `galaxygovernance` | Galaxygovernance | [https://open.kattis.com/problems/galaxygovernance](https://open.kattis.com/problems/galaxygovernance) |
| `gameofnines` | Game of Nines | [https://open.kattis.com/problems/gameofnines](https://open.kattis.com/problems/gameofnines) |
| `guidgenerator` | GUID Generator | [https://open.kattis.com/problems/guidgenerator](https://open.kattis.com/problems/guidgenerator) |
| `inazumacubedevice` | Inazuma Cube Device | [https://open.kattis.com/problems/inazumacubedevice](https://open.kattis.com/problems/inazumacubedevice) |
| `manhattaninterference` | Manhattaninterference | [https://open.kattis.com/problems/manhattaninterference](https://open.kattis.com/problems/manhattaninterference) |
| `meetingfreefridays` | Meetingfreefridays | [https://open.kattis.com/problems/meetingfreefridays](https://open.kattis.com/problems/meetingfreefridays) |
| `memoriesofpassportcontrol` | Memories of Passport Control | [https://open.kattis.com/problems/memoriesofpassportcontrol](https://open.kattis.com/problems/memoriesofpassportcontrol) |
| `moonlittimemachine` | Moonlit Time Machine | [https://open.kattis.com/problems/moonlittimemachine](https://open.kattis.com/problems/moonlittimemachine) |
| `muchroomformushrooms` | Much Room for Mushrooms | [https://open.kattis.com/problems/muchroomformushrooms](https://open.kattis.com/problems/muchroomformushrooms) |
| `onewayonly` | One Way Only | [https://open.kattis.com/problems/onewayonly](https://open.kattis.com/problems/onewayonly) |
| `orchardfence` | Orchardfence | [https://open.kattis.com/problems/orchardfence](https://open.kattis.com/problems/orchardfence) |
| `photoencoding` | Photo Encoding | [https://open.kattis.com/problems/photoencoding](https://open.kattis.com/problems/photoencoding) |
| `rowsofstars` | Rowsofstars | [https://open.kattis.com/problems/rowsofstars](https://open.kattis.com/problems/rowsofstars) |
| `shinjukustation` | Shinjuku Station | [https://open.kattis.com/problems/shinjukustation](https://open.kattis.com/problems/shinjukustation) |
| `snakeystring` | Snakey String | [https://open.kattis.com/problems/snakeystring](https://open.kattis.com/problems/snakeystring) |
| `swapforpalindrome` | Swap for Palindrome | [https://open.kattis.com/problems/swapforpalindrome](https://open.kattis.com/problems/swapforpalindrome) |
| `treeracing` | Treeracing | [https://open.kattis.com/problems/treeracing](https://open.kattis.com/problems/treeracing) |

---

## Southwestern Europe Regional Contest (2010)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/59](https://solved.ac/problems/archive/contest/59)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Southwestern%20Europe%20Regional%20Contest%20%28SWERC%29%202010](https://open.kattis.com/problem-sources/Southwestern%20Europe%20Regional%20Contest%20%28SWERC%29%202010)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | Lawn mower | [https://open.kattis.com/problems/lawnmower](https://open.kattis.com/problems/lawnmower) |
| `B` | Periodic points | [https://open.kattis.com/problems/periodicpoints](https://open.kattis.com/problems/periodicpoints) |
| `C` | Comparing answers | [https://open.kattis.com/problems/comparinganswers](https://open.kattis.com/problems/comparinganswers) |
| `D` | Fake scoreboard | [https://open.kattis.com/problems/fakescoreboard](https://open.kattis.com/problems/fakescoreboard) |
| `E` | Palindromic DNA | [https://open.kattis.com/problems/palindromicdna](https://open.kattis.com/problems/palindromicdna) |
| `F` | Jumping monkey | [https://open.kattis.com/problems/jumpingmonkey](https://open.kattis.com/problems/jumpingmonkey) |
| `G` | Sensor network | [https://open.kattis.com/problems/sensornetwork](https://open.kattis.com/problems/sensornetwork) |
| `H` | Assembly line | [https://open.kattis.com/problems/assemblyline](https://open.kattis.com/problems/assemblyline) |
| `I` | Locks and keys | **UNMATCHED** |
| `J` | 3-sided dice | [https://open.kattis.com/problems/3sideddice](https://open.kattis.com/problems/3sideddice) |

---

## Southwestern Europe Regional Contest (2014)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1313](https://solved.ac/problems/archive/contest/1313)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Southwestern%20Europe%20Regional%20Contest%20%28SWERC%29%202014](https://open.kattis.com/problem-sources/Southwestern%20Europe%20Regional%20Contest%20%28SWERC%29%202014)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `a` | GREAT + SWERC = PORTO | [https://open.kattis.com/problems/greatswercporto](https://open.kattis.com/problems/greatswercporto) |
| `b` | Flowery Trails | [https://open.kattis.com/problems/flowerytrails](https://open.kattis.com/problems/flowerytrails) |
| `c` | Golf Bot | [https://open.kattis.com/problems/golfbot](https://open.kattis.com/problems/golfbot) |
| `d` | Book Club | [https://open.kattis.com/problems/bookclub](https://open.kattis.com/problems/bookclub) |
| `e` | Ricochet Robots | [https://open.kattis.com/problems/ricochetrobots](https://open.kattis.com/problems/ricochetrobots) |
| `f` | City Park | [https://open.kattis.com/problems/citypark](https://open.kattis.com/problems/citypark) |
| `g` | Playing with Geometry | [https://open.kattis.com/problems/geometry](https://open.kattis.com/problems/geometry) |
| `h` | Money Transfers | [https://open.kattis.com/problems/moneytransfers](https://open.kattis.com/problems/moneytransfers) |
| `i` | The Safe Secret | [https://open.kattis.com/problems/safesecret](https://open.kattis.com/problems/safesecret) |
| `j` | The Big Painting | [https://open.kattis.com/problems/bigpainting](https://open.kattis.com/problems/bigpainting) |

---

## Southwestern Europe Regional Contest (2016)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1581](https://solved.ac/problems/archive/contest/1581)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Southwestern%20Europe%20Regional%20Contest%20%28SWERC%29%202016](https://open.kattis.com/problem-sources/Southwestern%20Europe%20Regional%20Contest%20%28SWERC%29%202016)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | Within Arm | [https://open.kattis.com/problems/withinarmsreach](https://open.kattis.com/problems/withinarmsreach) |
| `B` | Bribing Eve | [https://open.kattis.com/problems/bribingeve](https://open.kattis.com/problems/bribingeve) |
| `C` | Candle Box | [https://open.kattis.com/problems/candlebox](https://open.kattis.com/problems/candlebox) |
| `D` | Dinner Bet | [https://open.kattis.com/problems/dinnerbet](https://open.kattis.com/problems/dinnerbet) |
| `E` | Passwords | [https://open.kattis.com/problems/passwords](https://open.kattis.com/problems/passwords) |
| `F` | Performance Review | [https://open.kattis.com/problems/review](https://open.kattis.com/problems/review) |
| `G` | Cairo Corridor | [https://open.kattis.com/problems/cairocorridor](https://open.kattis.com/problems/cairocorridor) |
| `H` | Pascal | [https://open.kattis.com/problems/hyperpyramids](https://open.kattis.com/problems/hyperpyramids) |
| `I` | The White Rabbit Pocket Watch | [https://open.kattis.com/problems/whiterabbit](https://open.kattis.com/problems/whiterabbit) |
| `J` | Risky Lottery | [https://open.kattis.com/problems/riskylottery](https://open.kattis.com/problems/riskylottery) |
| `K` | Balls and Needles | [https://open.kattis.com/problems/ballsandneedles](https://open.kattis.com/problems/ballsandneedles) |

---

## Southwestern Europe Regional Contest (2017)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1826](https://solved.ac/problems/archive/contest/1826)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/Southwestern%20Europe%20Regional%20Contest%20%28SWERC%29%202017](https://open.kattis.com/problem-sources/Southwestern%20Europe%20Regional%20Contest%20%28SWERC%29%202017)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `blowingcandles` | Blowing Candles | [https://open.kattis.com/problems/blowingcandles](https://open.kattis.com/problems/blowingcandles) |
| `burglary` | Burglary | [https://open.kattis.com/problems/burglary](https://open.kattis.com/problems/burglary) |
| `cakeymccakeface` | Cakey McCakeFace | [https://open.kattis.com/problems/cakeymccakeface](https://open.kattis.com/problems/cakeymccakeface) |
| `candychain` | Candy Chain | [https://open.kattis.com/problems/candychain](https://open.kattis.com/problems/candychain) |
| `cordonbleu` | Cordon Bleu | [https://open.kattis.com/problems/cordonbleu](https://open.kattis.com/problems/cordonbleu) |
| `frosting` | Frosting on the Cake | [https://open.kattis.com/problems/frosting](https://open.kattis.com/problems/frosting) |
| `ingredients` | Ingredients | [https://open.kattis.com/problems/ingredients](https://open.kattis.com/problems/ingredients) |
| `kabobs` | Kabobs | [https://open.kattis.com/problems/kabobs](https://open.kattis.com/problems/kabobs) |
| `macarons` | Macarons | [https://open.kattis.com/problems/macarons](https://open.kattis.com/problems/macarons) |
| `shatteredcake` | Shattered Cake | [https://open.kattis.com/problems/shatteredcake](https://open.kattis.com/problems/shatteredcake) |
| `table` | Table | [https://open.kattis.com/problems/table](https://open.kattis.com/problems/table) |

---

## Southwestern Europe Regional Contest (2018)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2067](https://solved.ac/problems/archive/contest/2067)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `blurredpictures` | Blurredpictures | **UNMATCHED** |
| `citylights` | Citylights | **UNMATCHED** |
| `crosswords` | Crosswords | **UNMATCHED** |
| `dishonestdriver` | Dishonestdriver | **UNMATCHED** |
| `masonsmark` | Masonsmark | **UNMATCHED** |
| `monalisa` | Monalisa | **UNMATCHED** |
| `monumenttour` | Monumenttour | **UNMATCHED** |
| `parisbynight` | Parisbynight | **UNMATCHED** |
| `rounding` | Rounding | **UNMATCHED** |
| `strings` | Strings | **UNMATCHED** |
| `travelguide` | Travelguide | **UNMATCHED** |

---

## Southwestern Europe Regional Contest (2019)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2148](https://solved.ac/problems/archive/contest/2148)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `ants` | Ants | **UNMATCHED** |
| `biodiversity` | Biodiversity | **UNMATCHED** |
| `birdwatching` | Birdwatching | **UNMATCHED** |
| `commutation` | Commutation | **UNMATCHED** |
| `countingtrees` | Countingtrees | **UNMATCHED** |
| `gnalcats` | Gnalcats | **UNMATCHED** |
| `icebergs` | Icebergs | **UNMATCHED** |
| `pixels` | Pixels | **UNMATCHED** |
| `prng` | Prng | **UNMATCHED** |
| `rats` | Rats | **UNMATCHED** |
| `rivergame` | Rivergame | **UNMATCHED** |
| `travel` | Travel | **UNMATCHED** |

---

## Southwestern Europe Regional Contest (2020)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2465](https://solved.ac/problems/archive/contest/2465)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `cakes` | Cakes | **UNMATCHED** |
| `daisysMazes` | Daisy | **UNMATCHED** |
| `decoration` | Decoration | **UNMATCHED** |
| `emails` | Emails | **UNMATCHED** |
| `fantasmagorie` | Fantasmagorie | **UNMATCHED** |
| `gratitude` | Gratitude | **UNMATCHED** |
| `hierarchy` | Mentors | **UNMATCHED** |
| `jogging` | Jogging | **UNMATCHED** |
| `restaurants` | Restaurants | **UNMATCHED** |
| `rule110` | Rule 110 | **UNMATCHED** |
| `safedistance` | Safe Distance | **UNMATCHED** |
| `sets` | Figurines | **UNMATCHED** |
| `uniqueactivities` | Unique Activities | **UNMATCHED** |

---

## Southwestern Europe Regional Contest (2021)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/3100](https://solved.ac/problems/archive/contest/3100)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | Organizing SWERC | **UNMATCHED** |
| `B` | Drone Photo | **UNMATCHED** |
| `C` | Il Derby della Madonnina | **UNMATCHED** |
| `D` | Ice Cream Shop | **UNMATCHED** |
| `E` | Evolution of Weasels | **UNMATCHED** |
| `F` | Bottle Arrangements | **UNMATCHED** |
| `G` | Round Table | **UNMATCHED** |
| `H` | Pandemic Restrictions | **UNMATCHED** |
| `I` | Antennas | **UNMATCHED** |
| `J` | Boundary | **UNMATCHED** |
| `K` | Gastronomic Event | **UNMATCHED** |
| `L` | Circular Maze | **UNMATCHED** |

---

## Southwestern Europe Regional Contest (2022)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/3518](https://solved.ac/problems/archive/contest/3518)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | Walking Boy | **UNMATCHED** |
| `B` | Uniform Chemistry | **UNMATCHED** |
| `C` | Another Wine Tasting Event | **UNMATCHED** |
| `D` | Crossing the Railways | **UNMATCHED** |
| `E` | Spinach Pizza | **UNMATCHED** |
| `F` | Beppa and SwerChat | **UNMATCHED** |
| `G` | Parmigiana With Seafood | **UNMATCHED** |
| `H` | Controllers | **UNMATCHED** |
| `I` | Library game | **UNMATCHED** |
| `J` | Italian Data Centers | **UNMATCHED** |
| `K` | Train Splitting | **UNMATCHED** |
| `L` | Vittorio Plays with LEGO Bricks | **UNMATCHED** |

---

## Southwestern Europe Regional Contest (2023)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4151](https://solved.ac/problems/archive/contest/4151)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `A` | Cards | **UNMATCHED** |
| `B` | Supporting everyone | **UNMATCHED** |
| `C` | Metro quiz | **UNMATCHED** |
| `D` | Flag performance | **UNMATCHED** |
| `E` | Nicest view | **UNMATCHED** |
| `F` | Programming-trampoline-athlon! | **UNMATCHED** |
| `G` | Favourite dish | **UNMATCHED** |
| `H` | Break a leg! | **UNMATCHED** |
| `I` | Throwing dice | **UNMATCHED** |
| `J` | Olympic goodies | **UNMATCHED** |
| `K` | Team selection | **UNMATCHED** |
| `L` | Broken trophy | **UNMATCHED** |
| `M` | Inorder | **UNMATCHED** |

---

## United Kingdom & Ireland Evening Programming Contest (2015)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1412](https://solved.ac/problems/archive/contest/1412)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/United%20Kingdom%20and%20Ireland%20Programming%20Contest%20%28UKIEPC%29%202015](https://open.kattis.com/problem-sources/United%20Kingdom%20and%20Ireland%20Programming%20Contest%20%28UKIEPC%29%202015)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `aqueducts` | Aqueduct Construction | [https://open.kattis.com/problems/aqueducts](https://open.kattis.com/problems/aqueducts) |
| `beer` | Drink Responsibly | [https://open.kattis.com/problems/drinkresponsibly](https://open.kattis.com/problems/drinkresponsibly) |
| `bikers` | Mountain Biking | [https://open.kattis.com/problems/mountainbiking](https://open.kattis.com/problems/mountainbiking) |
| `cabs` | Call a Cab | [https://open.kattis.com/problems/callacab](https://open.kattis.com/problems/callacab) |
| `conversation` | Conversation Log | [https://open.kattis.com/problems/conversationlog](https://open.kattis.com/problems/conversationlog) |
| `drilling` | Slant Drilling | [https://open.kattis.com/problems/slantdrilling](https://open.kattis.com/problems/slantdrilling) |
| `jelly` | Jelly Raid | [https://open.kattis.com/problems/jellyraid](https://open.kattis.com/problems/jellyraid) |
| `lamps` | Physiognomy | [https://open.kattis.com/problems/physiognomy](https://open.kattis.com/problems/physiognomy) |
| `milestones` | Milestone Counter | [https://open.kattis.com/problems/milestones](https://open.kattis.com/problems/milestones) |
| `nimionese` | Nimionese | [https://open.kattis.com/problems/nimionese](https://open.kattis.com/problems/nimionese) |
| `rain` | Rainfall | [https://open.kattis.com/problems/rainfall](https://open.kattis.com/problems/rainfall) |
| `sunlight` | Sunlight | [https://open.kattis.com/problems/sunlight](https://open.kattis.com/problems/sunlight) |
| `telescope` | Telescope | [https://open.kattis.com/problems/telescope](https://open.kattis.com/problems/telescope) |

---

## United Kingdom & Ireland Evening Programming Contest (2016)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1542](https://solved.ac/problems/archive/contest/1542)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/United%20Kingdom%20and%20Ireland%20Programming%20Contest%20%28UKIEPC%29%202016](https://open.kattis.com/problem-sources/United%20Kingdom%20and%20Ireland%20Programming%20Contest%20%28UKIEPC%29%202016)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `beanbag` | Jack and the Beanbag | [https://open.kattis.com/problems/beanbag](https://open.kattis.com/problems/beanbag) |
| `boat` | Build a Boat | [https://open.kattis.com/problems/buildboat](https://open.kattis.com/problems/buildboat) |
| `compensation` | Compensation | [https://open.kattis.com/problems/compensation](https://open.kattis.com/problems/compensation) |
| `compiler` | Compiler | [https://open.kattis.com/problems/compiler](https://open.kattis.com/problems/compiler) |
| `darkness` | The Darkness | [https://open.kattis.com/problems/darkness](https://open.kattis.com/problems/darkness) |
| `fridge` | Fridge | [https://open.kattis.com/problems/fridge](https://open.kattis.com/problems/fridge) |
| `gondola` | Gondolas | [https://open.kattis.com/problems/gondolas](https://open.kattis.com/problems/gondolas) |
| `grass` | Grass Seed Inc. | [https://open.kattis.com/problems/grassseed](https://open.kattis.com/problems/grassseed) |
| `rhyming` | Rhyming Slang | [https://open.kattis.com/problems/rhyming](https://open.kattis.com/problems/rhyming) |
| `santa` | Secret Santa | [https://open.kattis.com/problems/secretsanta](https://open.kattis.com/problems/secretsanta) |
| `showroom` | Elegant Showroom | [https://open.kattis.com/problems/showroom](https://open.kattis.com/problems/showroom) |
| `taxing` | Taxing Problem | [https://open.kattis.com/problems/taxing](https://open.kattis.com/problems/taxing) |

---

## United Kingdom & Ireland Evening Programming Contest (2017)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/1785](https://solved.ac/problems/archive/contest/1785)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/United%20Kingdom%20and%20Ireland%20Programming%20Contest%20%28UKIEPC%29%202017](https://open.kattis.com/problem-sources/United%20Kingdom%20and%20Ireland%20Programming%20Contest%20%28UKIEPC%29%202017)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `biscuit` | Breaking Biscuits | [https://open.kattis.com/problems/breakingbiscuits](https://open.kattis.com/problems/breakingbiscuits) |
| `chop` | I Work All Day | [https://open.kattis.com/problems/iworkallday](https://open.kattis.com/problems/iworkallday) |
| `coinflip` | Flipping Coins | [https://open.kattis.com/problems/flippingcoins](https://open.kattis.com/problems/flippingcoins) |
| `cranes` | Knightsbridge Rises | [https://open.kattis.com/problems/knightsbridgerises](https://open.kattis.com/problems/knightsbridgerises) |
| `disarray` | Deranging Hat | [https://open.kattis.com/problems/deranginghat](https://open.kattis.com/problems/deranginghat) |
| `gentlerobots` | Gentlebots | **UNMATCHED** |
| `hiking` | Hiker Safety | [https://open.kattis.com/problems/hikersafety](https://open.kattis.com/problems/hikersafety) |
| `lounge` | Lounge Lizards | [https://open.kattis.com/problems/loungelizards](https://open.kattis.com/problems/loungelizards) |
| `music` | Just a Minim | [https://open.kattis.com/problems/justaminim](https://open.kattis.com/problems/justaminim) |
| `rooms` | Education | [https://open.kattis.com/problems/education](https://open.kattis.com/problems/education) |
| `snooker` | Cued In | [https://open.kattis.com/problems/cuedin](https://open.kattis.com/problems/cuedin) |
| `sunset` | Alien Sunset | [https://open.kattis.com/problems/aliensunset](https://open.kattis.com/problems/aliensunset) |

---

## United Kingdom & Ireland Evening Programming Contest (2018)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2068](https://solved.ac/problems/archive/contest/2068)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/United%20Kingdom%20and%20Ireland%20Programming%20Contest%20%28UKIEPC%29%202018](https://open.kattis.com/problem-sources/United%20Kingdom%20and%20Ireland%20Programming%20Contest%20%28UKIEPC%29%202018)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `analogue` | Analogue Cluster | [https://open.kattis.com/problems/analoguecluster](https://open.kattis.com/problems/analoguecluster) |
| `bus` | Bus Logic | [https://open.kattis.com/problems/buslogic](https://open.kattis.com/problems/buslogic) |
| `codeword` | Code Word | [https://open.kattis.com/problems/codeword](https://open.kattis.com/problems/codeword) |
| `dynamo` | Dynamo Wheel | [https://open.kattis.com/problems/dynamowheel](https://open.kattis.com/problems/dynamowheel) |
| `evenly` | Evenly Distributed | [https://open.kattis.com/problems/evenlydivided](https://open.kattis.com/problems/evenlydivided) |
| `fibonacci` | Fibonacci Compression | [https://open.kattis.com/problems/fibonaccicompression](https://open.kattis.com/problems/fibonaccicompression) |
| `gardenvampire` | Garden Variety Vampire | [https://open.kattis.com/problems/gardenvarietyvampire](https://open.kattis.com/problems/gardenvarietyvampire) |
| `hamster` | Hamster Ball | [https://open.kattis.com/problems/hamsterball](https://open.kattis.com/problems/hamsterball) |
| `internet` | Internet Upload | [https://open.kattis.com/problems/internetupload](https://open.kattis.com/problems/internetupload) |
| `jackpot` | Jackpot | [https://open.kattis.com/problems/jackpot2](https://open.kattis.com/problems/jackpot2) |
| `kings` | Kings | [https://open.kattis.com/problems/kings](https://open.kattis.com/problems/kings) |
| `lastword` | Last Word | [https://open.kattis.com/problems/lastword](https://open.kattis.com/problems/lastword) |

---

## United Kingdom & Ireland Evening Programming Contest (2019)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2095](https://solved.ac/problems/archive/contest/2095)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/United%20Kingdom%20and%20Ireland%20Programming%20Contest%20%28UKIEPC%29%202019](https://open.kattis.com/problem-sources/United%20Kingdom%20and%20Ireland%20Programming%20Contest%20%28UKIEPC%29%202019)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `automaticaccountant` | Automatic Accountant | [https://open.kattis.com/problems/automaticaccountant](https://open.kattis.com/problems/automaticaccountant) |
| `ballpark` | Ballpark Estimate | [https://open.kattis.com/problems/ballparkestimate](https://open.kattis.com/problems/ballparkestimate) |
| `crookeddealing` | Crooked Dealing | [https://open.kattis.com/problems/crookeddealing](https://open.kattis.com/problems/crookeddealing) |
| `dome` | Dome Construction | [https://open.kattis.com/problems/domeconstruction](https://open.kattis.com/problems/domeconstruction) |
| `estateagent` | Estate Agent | [https://open.kattis.com/problems/estateagent](https://open.kattis.com/problems/estateagent) |
| `feedingseals` | Feeding Seals | [https://open.kattis.com/problems/feedingseals](https://open.kattis.com/problems/feedingseals) |
| `grandcentral` | Grand Central Station | [https://open.kattis.com/problems/grandcentralstation](https://open.kattis.com/problems/grandcentralstation) |
| `hatstand` | Hat Stand | [https://open.kattis.com/problems/hatstand](https://open.kattis.com/problems/hatstand) |
| `integralpyramid` | Integral Pyramid | [https://open.kattis.com/problems/integralpyramid](https://open.kattis.com/problems/integralpyramid) |
| `jammedgym` | Jammed Gym | [https://open.kattis.com/problems/jammedgym](https://open.kattis.com/problems/jammedgym) |
| `knockedink` | Knocked Ink | [https://open.kattis.com/problems/knockedink](https://open.kattis.com/problems/knockedink) |
| `loweffortleague` | Low Effort League | [https://open.kattis.com/problems/loweffortleague](https://open.kattis.com/problems/loweffortleague) |
| `mosaic` | Mosaic Mansion | [https://open.kattis.com/problems/mosaicmansion](https://open.kattis.com/problems/mosaicmansion) |

---

## United Kingdom & Ireland Evening Programming Contest (2020)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/2358](https://solved.ac/problems/archive/contest/2358)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/United%20Kingdom%20and%20Ireland%20Programming%20Contest%20%28UKIEPC%29%202020](https://open.kattis.com/problem-sources/United%20Kingdom%20and%20Ireland%20Programming%20Contest%20%28UKIEPC%29%202020)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `aquariumarrangement` | Aquarium | **UNMATCHED** |
| `balancedbreakdown` | Bidirectional Code | **UNMATCHED** |
| `corruptedcontest` | Corrupt Judge | **UNMATCHED** |
| `divvyingup` | Divvying Up | [https://open.kattis.com/problems/divvyingup](https://open.kattis.com/problems/divvyingup) |
| `efficientlyelevated` | Elevator Pitch | **UNMATCHED** |
| `familyfares` | Family Fares | **UNMATCHED** |
| `generatorgrid` | Generators | **UNMATCHED** |
| `hungryhenk` | Haughty Cuisine | **UNMATCHED** |
| `incompleteimplementation` | Incomplete Sort | **UNMATCHED** |
| `jigsaw` | Jigsaw | **UNMATCHED** |
| `kleptocrat` | Kleptocrat | **UNMATCHED** |
| `lostmap` | Lost Map | [https://open.kattis.com/problems/lostmap2](https://open.kattis.com/problems/lostmap2) |
| `moderatepace` | Moderate Pace | [https://open.kattis.com/problems/moderatepace](https://open.kattis.com/problems/moderatepace) |

---

## United Kingdom & Ireland Evening Programming Contest (2023)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4017](https://solved.ac/problems/archive/contest/4017)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/United%20Kingdom%20and%20Ireland%20Programming%20Contest%20%28UKIEPC%29%202023](https://open.kattis.com/problem-sources/United%20Kingdom%20and%20Ireland%20Programming%20Contest%20%28UKIEPC%29%202023)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `assessment` | Assessment Disruption | [https://open.kattis.com/problems/assessment](https://open.kattis.com/problems/assessment) |
| `boat` | Boat Commuter Line | [https://open.kattis.com/problems/boatcommuterline](https://open.kattis.com/problems/boatcommuterline) |
| `clearing` | Clearing | [https://open.kattis.com/problems/clearing](https://open.kattis.com/problems/clearing) |
| `delivery` | Delivery strength of Universe Express | [https://open.kattis.com/problems/deliveryforces](https://open.kattis.com/problems/deliveryforces) |
| `enchanted` | Enchanted Fortress | [https://open.kattis.com/problems/enchantedfortress](https://open.kattis.com/problems/enchantedfortress) |
| `fastforward` | Fast Forward | [https://open.kattis.com/problems/fastforward](https://open.kattis.com/problems/fastforward) |
| `glaciertravel` | Glacier Travel | [https://open.kattis.com/problems/glaciertravel](https://open.kattis.com/problems/glaciertravel) |
| `history` | History in Numbers | [https://open.kattis.com/problems/historyinnumbers](https://open.kattis.com/problems/historyinnumbers) |
| `international` | International Travels | [https://open.kattis.com/problems/international](https://open.kattis.com/problems/international) |
| `journey` | Journey of Recovery | [https://open.kattis.com/problems/journey](https://open.kattis.com/problems/journey) |
| `kernel` | Kernel Scheduler | [https://open.kattis.com/problems/kernelscheduler](https://open.kattis.com/problems/kernelscheduler) |
| `lastone` | Last one Standing | [https://open.kattis.com/problems/lastone](https://open.kattis.com/problems/lastone) |
| `minitetris` | Mini-Tetris 3023 | [https://open.kattis.com/problems/minitetris3023](https://open.kattis.com/problems/minitetris3023) |
| `namingwine` | Naming Bottles | [https://open.kattis.com/problems/namingwine](https://open.kattis.com/problems/namingwine) |

---

## United Kingdom & Ireland Evening Programming Contest (2024)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4316](https://solved.ac/problems/archive/contest/4316)
* **Open.Kattis Contest:** [https://open.kattis.com/problem-sources/United%20Kingdom%20and%20Ireland%20Programming%20Contest%20%28UKIEPC%29%202024](https://open.kattis.com/problem-sources/United%20Kingdom%20and%20Ireland%20Programming%20Contest%20%28UKIEPC%29%202024)

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `amalgram` | Amalgram | [https://open.kattis.com/problems/amalgram](https://open.kattis.com/problems/amalgram) |
| `budget` | Budget Analysis | [https://open.kattis.com/problems/budget3](https://open.kattis.com/problems/budget3) |
| `crosscountry` | Cross Country | [https://open.kattis.com/problems/crosscountry2](https://open.kattis.com/problems/crosscountry2) |
| `drone` | Drone Control | [https://open.kattis.com/problems/drone](https://open.kattis.com/problems/drone) |
| `eradication` | Eradication Sort | [https://open.kattis.com/problems/eradication](https://open.kattis.com/problems/eradication) |
| `findingproteins` | Finding Suspicious Proteins | [https://open.kattis.com/problems/findingproteins](https://open.kattis.com/problems/findingproteins) |
| `gridsearch` | Grid Search | [https://open.kattis.com/problems/gridsearch](https://open.kattis.com/problems/gridsearch) |
| `hedge` | Hedge Topiary | [https://open.kattis.com/problems/hedge](https://open.kattis.com/problems/hedge) |
| `inconsistent` | Inconsistent Patterns | [https://open.kattis.com/problems/inconsistent](https://open.kattis.com/problems/inconsistent) |
| `jabbernetwork` | Jabber Network | [https://open.kattis.com/problems/jabbernetwork](https://open.kattis.com/problems/jabbernetwork) |
| `knitting` | Knitting | [https://open.kattis.com/problems/knitting](https://open.kattis.com/problems/knitting) |
| `legday` | Leg Day | [https://open.kattis.com/problems/legday](https://open.kattis.com/problems/legday) |

---

## United Kingdom & Ireland Evening Programming Contest (2025)

* **solved.ac Archive:** [https://solved.ac/problems/archive/contest/4655](https://solved.ac/problems/archive/contest/4655)
* **Open.Kattis Contest:** None

| Problem Directory | Problem Title (from PDF) | Open.Kattis Problem Link |
|---|---|---|
| `arboreal` | Arboreal Challenge | **UNMATCHED** |
| `bricks` | Brickwork | **UNMATCHED** |
| `colour` | Colourful Captcha | **UNMATCHED** |
| `depot` | Depot | **UNMATCHED** |
| `enclosure` | Enclosure | **UNMATCHED** |
| `fellwalking` | Fell Walking | **UNMATCHED** |
| `getgood` | Get Good | **UNMATCHED** |
| `hybrid` | Hybrid Search | **UNMATCHED** |
| `itsybits` | Itsy Bits | **UNMATCHED** |
| `joust` | Joust Sort | **UNMATCHED** |
| `klaus` | Klaus | **UNMATCHED** |
| `lastorders` | Last Orders | **UNMATCHED** |
| `motorway` | Motorway Stops | **UNMATCHED** |

---