# Solved.ac ICPC Contest Groups & Archive Pages Index This report documents the complete, fully-expanded hierarchical tree of all **ICPC contest groups and individual contest archive pages** indexed on the live **solved.ac** platform. **Total Discovered Group Archives:** 135 **Total Discovered Contest Archives:** 964 --- ## šŸ† Contest Archives Tree * **[ICPC (Group 1)](https://solved.ac/problems/archive/group/1)** * **[Regionals (Group 7)](https://solved.ac/problems/archive/group/7)** * **[Africa and Arab (Group 34)](https://solved.ac/problems/archive/group/34)** * **[Arab Collegiate Programming Contest (Group 35)](https://solved.ac/problems/archive/group/35)** * **[ACM Jordanian Collegiate Programming Contest (Group 279)](https://solved.ac/problems/archive/group/279)** * [JCPC 2012](https://solved.ac/problems/archive/contest/1158) * **[Lebanese Collegiate Programming Contest (Group 280)](https://solved.ac/problems/archive/group/280)** * [LCPC 2011](https://solved.ac/problems/archive/contest/1159) * **[Tunisian Collegiate Programming Contest (Group 311)](https://solved.ac/problems/archive/group/311)** * [TCPC 2013](https://solved.ac/problems/archive/contest/1331) * [2010 Arab Collegiate Programming Contest](https://solved.ac/problems/archive/contest/131) * [2009 Arab Collegiate Programming Contest](https://solved.ac/problems/archive/contest/132) * [2008 Arab Collegiate Programming Contest](https://solved.ac/problems/archive/contest/133) * [2007 Arab Collegiate Programming Contest](https://solved.ac/problems/archive/contest/134) * [2006 Arab Collegiate Programming Contest](https://solved.ac/problems/archive/contest/135) * [2005 Arab Collegiate Programming Contest](https://solved.ac/problems/archive/contest/136) * [2013 Arab Collegiate Programming Contest](https://solved.ac/problems/archive/contest/1177) * [2012 Arab Collegiate Programming Contest](https://solved.ac/problems/archive/contest/1178) * [2011 Arab Collegiate Programming Contest](https://solved.ac/problems/archive/contest/1179) * [2014 Arab Collegiate Programming Contest](https://solved.ac/problems/archive/contest/1445) * [2015 Arab Collegiate Programming Contest](https://solved.ac/problems/archive/contest/2187) * [2016 Arab Collegiate Programming Contest](https://solved.ac/problems/archive/contest/2188) * [2017 Arab Collegiate Programming Contest](https://solved.ac/problems/archive/contest/2189) * [2018 Arab Collegiate Programming Contest](https://solved.ac/problems/archive/contest/2190) * **[South Africa Regional Contest (Group 168)](https://solved.ac/problems/archive/group/168)** * **[Beninese Collegiate Programming Contest (Group 399)](https://solved.ac/problems/archive/group/399)** * [The 2016 Beninese Collegiate Programming Contest](https://solved.ac/problems/archive/contest/1740) * [2001 South Africa Regional Contest](https://solved.ac/problems/archive/contest/736) * [The 2002 ACM South Africa Programming Contest](https://solved.ac/problems/archive/contest/2721) * **[Asia East Continent (Group 465)](https://solved.ac/problems/archive/group/465)** * **[China (Group 164)](https://solved.ac/problems/archive/group/164)** * **[Beijing (Group 266)](https://solved.ac/problems/archive/group/266)** * [Beijing Regional Contest 2004](https://solved.ac/problems/archive/contest/1119) * [Beijing Regional Contest 2002](https://solved.ac/problems/archive/contest/1137) * [Beijing Regional Contest 2005](https://solved.ac/problems/archive/contest/1138) * **[Hangzhou (Group 264)](https://solved.ac/problems/archive/group/264)** * [Hangzhou Regional Contest 2005](https://solved.ac/problems/archive/contest/1116) * **[Shanghai (Group 165)](https://solved.ac/problems/archive/group/165)** * [Shanghai Regional Contest 2011](https://solved.ac/problems/archive/contest/715) * [Shanghai Regional Contest 2004](https://solved.ac/problems/archive/contest/1139) * [Shanghai Regional Contest 2006](https://solved.ac/problems/archive/contest/1140) * [Shanghai Regional Contest 1999](https://solved.ac/problems/archive/contest/2714) * **[Xi'an (Group 291)](https://solved.ac/problems/archive/group/291)** * [Xi'an Regional Contest 2002](https://solved.ac/problems/archive/contest/1206) * **[Hong Kong (Group 852)](https://solved.ac/problems/archive/group/852)** * [2023 ICPC Hong Kong Regional](https://solved.ac/problems/archive/contest/3597) * **[Mongolia (Group 431)](https://solved.ac/problems/archive/group/431)** * **[Mongolia National Programming Contest (Group 432)](https://solved.ac/problems/archive/group/432)** * [Mongolia National Programming Contest 2018](https://solved.ac/problems/archive/contest/1909) * **[Asia Pacific (Group 42)](https://solved.ac/problems/archive/group/42)** * **[Asia Pacific Championship (Group 1024)](https://solved.ac/problems/archive/group/1024)** * [The 2024 ICPC Asia Pacific Championship](https://solved.ac/problems/archive/contest/4173) * [The 2025 ICPC Asia Pacific Championship](https://solved.ac/problems/archive/contest/4585) * **[Korea (Group 211)](https://solved.ac/problems/archive/group/211)** * **[Nationwide Internet Competition (Group 256)](https://solved.ac/problems/archive/group/256)** * [Daejeon Nationalwide Internet Competition 2012](https://solved.ac/problems/archive/contest/1081) * [Daejeon Nationalwide Internet Competition 2011](https://solved.ac/problems/archive/contest/1082) * [Daejeon Nationalwide Internet Competition 2010](https://solved.ac/problems/archive/contest/1083) * [Seoul Nationalwide Internet Competition 2009](https://solved.ac/problems/archive/contest/1084) * [Seoul Nationalwide Internet Competition 2008](https://solved.ac/problems/archive/contest/1085) * [Seoul Nationalwide Internet Competition 2007](https://solved.ac/problems/archive/contest/1086) * [Seoul Nationalwide Internet Competition 2006](https://solved.ac/problems/archive/contest/1087) * [Seoul Nationalwide Internet Competition 2005](https://solved.ac/problems/archive/contest/1088) * [Seoul Nationalwide Internet Competition 2004](https://solved.ac/problems/archive/contest/1089) * [Seoul Nationalwide Internet Competition 2003](https://solved.ac/problems/archive/contest/1090) * [Taejon Nationalwide Internet Competition 2002](https://solved.ac/problems/archive/contest/1091) * [Daejeon Nationalwide Internet Competition 2013](https://solved.ac/problems/archive/contest/1124) * [Daejeon Nationalwide Internet Competition 2014](https://solved.ac/problems/archive/contest/1283) * [Daejeon Nationalwide Internet Competition 2015](https://solved.ac/problems/archive/contest/1368) * [Daejeon Nationalwide Internet Competition 2016](https://solved.ac/problems/archive/contest/1528) * [Daejeon Nationalwide Internet Competition 2017](https://solved.ac/problems/archive/contest/1758) * [Seoul Nationalwide Internet Competition 2018](https://solved.ac/problems/archive/contest/1935) * [Seoul Nationalwide Internet Competition 2019](https://solved.ac/problems/archive/contest/2064) * [Seoul Nationalwide Internet Competition 2020](https://solved.ac/problems/archive/contest/2330) * [Seoul Nationalwide Internet Competition 2021](https://solved.ac/problems/archive/contest/2810) * [Seoul Nationalwide Internet Competition 2022](https://solved.ac/problems/archive/contest/3217) * [Seoul Nationalwide Internet Competition 2023](https://solved.ac/problems/archive/contest/4005) * [Seoul Nationalwide Internet Competition 2024](https://solved.ac/problems/archive/contest/4344) * [Seoul Nationalwide Internet Competition 2025](https://solved.ac/problems/archive/contest/4591) * [Asia Regional - Taejon 2001](https://solved.ac/problems/archive/contest/884) * [Asia Regional - Daejeon 2012](https://solved.ac/problems/archive/contest/1060) * [Asia Regional - Daejeon 2011](https://solved.ac/problems/archive/contest/1061) * [Asia Regional - Daejeon 2010](https://solved.ac/problems/archive/contest/1062) * [Asia Regional - Seoul 2009](https://solved.ac/problems/archive/contest/1063) * [Asia Regional - Seoul 2008](https://solved.ac/problems/archive/contest/1064) * [Asia Regional - Seoul 2007](https://solved.ac/problems/archive/contest/1065) * [Asia Regional - Seoul 2006](https://solved.ac/problems/archive/contest/1066) * [Asia Regional - Seoul 2005](https://solved.ac/problems/archive/contest/1067) * [Asia Regional - Seoul 2004](https://solved.ac/problems/archive/contest/1068) * [Asia Regional - Seoul 2003](https://solved.ac/problems/archive/contest/1078) * [Asia Regional - Taejon 2002](https://solved.ac/problems/archive/contest/1079) * [Asia Regional - Taejon 2000](https://solved.ac/problems/archive/contest/1080) * [Asia Regional - Daejeon 2013](https://solved.ac/problems/archive/contest/1169) * [Asia Regional - Daejeon 2014](https://solved.ac/problems/archive/contest/1303) * [Asia Regional - Daejeon 2015](https://solved.ac/problems/archive/contest/1413) * [Asia Regional - Daejeon 2016](https://solved.ac/problems/archive/contest/1544) * [Asia Regional - Daejeon 2017](https://solved.ac/problems/archive/contest/1778) * [Asia Regional - Seoul 2018](https://solved.ac/problems/archive/contest/1942) * [Asia Regional - Seoul 2019](https://solved.ac/problems/archive/contest/2111) * [Asia Regional - Seoul 2020](https://solved.ac/problems/archive/contest/2339) * [Asia Regional - Seoul 2021](https://solved.ac/problems/archive/contest/2859) * [Asia Regional - Seoul 2022](https://solved.ac/problems/archive/contest/3227) * [Asia Regional - Seoul 2023](https://solved.ac/problems/archive/contest/4058) * [2024 ICPC Asia Seoul Regional](https://solved.ac/problems/archive/contest/4348) * [2025 ICPC Asia Seoul Regional](https://solved.ac/problems/archive/contest/4608) * **[Indonesia (Group 223)](https://solved.ac/problems/archive/group/223)** * **[Indonesia National Contest (Group 224)](https://solved.ac/problems/archive/group/224)** * [INC 2008](https://solved.ac/problems/archive/contest/939) * [INC 2007 Qual](https://solved.ac/problems/archive/contest/940) * [INC 2007](https://solved.ac/problems/archive/contest/941) * [INC 2010](https://solved.ac/problems/archive/contest/942) * [INC 2009](https://solved.ac/problems/archive/contest/1920) * [INC 2018](https://solved.ac/problems/archive/contest/1966) * [INC 2020](https://solved.ac/problems/archive/contest/2443) * [INC 2019](https://solved.ac/problems/archive/contest/2444) * [INC 2017](https://solved.ac/problems/archive/contest/2445) * [INC 2021](https://solved.ac/problems/archive/contest/3524) * [INC 2022](https://solved.ac/problems/archive/contest/4382) * [INC 2023](https://solved.ac/problems/archive/contest/4383) * [INC 2024](https://solved.ac/problems/archive/contest/4384) * [INC 2025](https://solved.ac/problems/archive/contest/4644) * **[Jakarta (Group 225)](https://solved.ac/problems/archive/group/225)** * [ACM-ICPC Regional Jakarta 2010](https://solved.ac/problems/archive/contest/943) * [ACM-ICPC Regional Contest, Jakarta 2017](https://solved.ac/problems/archive/contest/1884) * [The 2018 ICPC Asia Jakarta Regional Contest](https://solved.ac/problems/archive/contest/1965) * [The 2019 ICPC Asia Jakarta Regional Contest](https://solved.ac/problems/archive/contest/2235) * [The 2020 ICPC Asia Jakarta Regional Contest](https://solved.ac/problems/archive/contest/2396) * [The 2021 ICPC Asia Jakarta Regional Contest](https://solved.ac/problems/archive/contest/3347) * [The 2022 ICPC Asia Jakarta Regional Contest](https://solved.ac/problems/archive/contest/4254) * [The 2023 ICPC Asia Jakarta Regional Contest](https://solved.ac/problems/archive/contest/4255) * [The 2024 ICPC Asia Jakarta Regional Contest](https://solved.ac/problems/archive/contest/4385) * [The 2025 ICPC Asia Jakarta Regional Contest](https://solved.ac/problems/archive/contest/4648) * **[Japan (Group 43)](https://solved.ac/problems/archive/group/43)** * **[Japan Domestic Contest (Group 44)](https://solved.ac/problems/archive/group/44)** * [2011 Japan Domestic Contest](https://solved.ac/problems/archive/contest/201) * [2010 Japan Domestic Contest](https://solved.ac/problems/archive/contest/202) * [2009 Japan Domestic Contest](https://solved.ac/problems/archive/contest/203) * [2008 Japan Domestic Contest](https://solved.ac/problems/archive/contest/204) * [2007 Japan Domestic Contest](https://solved.ac/problems/archive/contest/205) * [2006 Japan Domestic Contest](https://solved.ac/problems/archive/contest/206) * [2005 Japan Domestic Contest](https://solved.ac/problems/archive/contest/207) * [2004 Japan Domestic Contest](https://solved.ac/problems/archive/contest/208) * [2012 Japan Domestic Contest](https://solved.ac/problems/archive/contest/826) * [2013 Japan Domestic Contest](https://solved.ac/problems/archive/contest/1109) * [2014 Japan Domestic Contest](https://solved.ac/problems/archive/contest/1281) * [2015 Japan Domestic Contest](https://solved.ac/problems/archive/contest/1367) * [2016 Japan Domestic Contest](https://solved.ac/problems/archive/contest/1522) * [2017 Japan Domestic Contest](https://solved.ac/problems/archive/contest/1780) * [2018 Japan Domestic Contest](https://solved.ac/problems/archive/contest/1905) * [2019 Japan Domestic Contest](https://solved.ac/problems/archive/contest/2069) * [2020 Japan Domestic Contest](https://solved.ac/problems/archive/contest/2347) * [2003 Japan Domestic Contest](https://solved.ac/problems/archive/contest/2729) * [2002 Japan Domestic Contest](https://solved.ac/problems/archive/contest/2730) * [2001 Japan Domestic Contest](https://solved.ac/problems/archive/contest/2731) * [2000 Japan Domestic Contest](https://solved.ac/problems/archive/contest/2732) * [2021 Japan Domestic Contest](https://solved.ac/problems/archive/contest/2880) * [2022 Japan Domestic Contest](https://solved.ac/problems/archive/contest/3177) * [1999 Japan Domestic Contest](https://solved.ac/problems/archive/contest/3288) * [1998 Japan Domestic Contest](https://solved.ac/problems/archive/contest/3289) * [2023 Japan Domestic Contest](https://solved.ac/problems/archive/contest/3854) * [2024 Japan Domestic Contest](https://solved.ac/problems/archive/contest/4253) * [2025 Japan Domestic Contest](https://solved.ac/problems/archive/contest/4641) * [Asia Regional Contest 2012 in Tokyo](https://solved.ac/problems/archive/contest/191) * [Asia Regional Contest 2011 in Fukuoka](https://solved.ac/problems/archive/contest/192) * [Asia Regional Contest 2010 in Tokyo](https://solved.ac/problems/archive/contest/193) * [Asia Regional Contest 2009 in Tokyo](https://solved.ac/problems/archive/contest/194) * [Asia Regional Contest 2008 in Aizu](https://solved.ac/problems/archive/contest/195) * [Asia Regional Contest 2007 in Tokyo](https://solved.ac/problems/archive/contest/196) * [Asia Regional Contest 2006 in Yokohama](https://solved.ac/problems/archive/contest/197) * [Asia Regional Contest 2005 in Tokyo](https://solved.ac/problems/archive/contest/198) * [Asia Regional Contest 2004 in Ehime](https://solved.ac/problems/archive/contest/199) * [Asia Regional Contest 2003 in Aizu](https://solved.ac/problems/archive/contest/200) * [Asia Regional Contest 2001 in Hakodate](https://solved.ac/problems/archive/contest/1102) * [Asia Regional Contest 2013 in Aizu](https://solved.ac/problems/archive/contest/1185) * [Asia Regional Contest 2014 in Tokyo](https://solved.ac/problems/archive/contest/1291) * [Asia Regional Contest 2015 in Tsukuba](https://solved.ac/problems/archive/contest/1440) * [Asia Regional Contest 2016 in Tsukuba](https://solved.ac/problems/archive/contest/1533) * [ACM-ICPC Asia Tsukuba Regional Contest 2017](https://solved.ac/problems/archive/contest/1819) * [Asia Regional Contest 2002 in Kanazawa](https://solved.ac/problems/archive/contest/1842) * [Asia Yokohama Regional Contest 2018](https://solved.ac/problems/archive/contest/1982) * [ICPC 2019 Asia Yokohama Regional](https://solved.ac/problems/archive/contest/2137) * [ICPC 2020 Asia Yokohama Regional](https://solved.ac/problems/archive/contest/2567) * [Asia Regional Contest 2000 in Tsukuba](https://solved.ac/problems/archive/contest/2733) * [Asia Regional Contest 1999 in Kyoto](https://solved.ac/problems/archive/contest/2734) * [ICPC 2021 Asia Yokohama Regional](https://solved.ac/problems/archive/contest/3082) * [ICPC 2022 Asia Yokohama Regional](https://solved.ac/problems/archive/contest/3481) * [ICPC 2023 Asia Yokohama Regional](https://solved.ac/problems/archive/contest/4070) * [2024 ICPC Asia Yokohama Regional Contest](https://solved.ac/problems/archive/contest/4371) * [2025 ICPC Asia Yokohama Regional Contest](https://solved.ac/problems/archive/contest/4643) * **[Malaysia (Group 260)](https://solved.ac/problems/archive/group/260)** * **[Malaysia National Programming Contest (Group 284)](https://solved.ac/problems/archive/group/284)** * [Al-Khawarizmi National Programming Contest 2013](https://solved.ac/problems/archive/contest/1193) * [Al-Khawarizmi National Programming Contest 2012](https://solved.ac/problems/archive/contest/1194) * [Al-Khawarizmi National Programming Contest 2011](https://solved.ac/problems/archive/contest/1195) * [Al-Khawarizmi National Programming Contest 2010](https://solved.ac/problems/archive/contest/1196) * [Al-Khawarizmi National Programming Contest 2016](https://solved.ac/problems/archive/contest/1739) * [Al-Khawarizmi National Programming Contest 2018](https://solved.ac/problems/archive/contest/1882) * [Asia Regional 2008 - Kuala Lumpur](https://solved.ac/problems/archive/contest/1112) * [ACM ICPC Asia Kuala Lumpur Regional Contest 2014](https://solved.ac/problems/archive/contest/1294) * **[Philippines (Group 285)](https://solved.ac/problems/archive/group/285)** * **[Philippines Multi-Provincial Programming Contest (Group 286)](https://solved.ac/problems/archive/group/286)** * [Philippines Multi-Provincial Programming Contest 2013](https://solved.ac/problems/archive/contest/1197) * [2016 ACM-ICPC Asia-Manila Regional Programming Contest](https://solved.ac/problems/archive/contest/1824) * [The 2002 ACM Asia Programming Contest - Manila](https://solved.ac/problems/archive/contest/2720) * **[Singapore (Group 255)](https://solved.ac/problems/archive/group/255)** * [ACM-ICPC Regional Singapore 2007](https://solved.ac/problems/archive/contest/944) * **[Taiwan (Group 257)](https://solved.ac/problems/archive/group/257)** * **[Taiwan Online Programming Contest (Group 321)](https://solved.ac/problems/archive/group/321)** * [TOPC 2015](https://solved.ac/problems/archive/contest/1364) * [TOPC 2016](https://solved.ac/problems/archive/contest/1534) * [TOPC 2017](https://solved.ac/problems/archive/contest/1836) * [TOPC 2019](https://solved.ac/problems/archive/contest/2071) * [TOPC 2020](https://solved.ac/problems/archive/contest/2349) * [TOPC 2021](https://solved.ac/problems/archive/contest/2818) * [TOPC 2022](https://solved.ac/problems/archive/contest/3264) * [TOPC 2023](https://solved.ac/problems/archive/contest/3989) * [TOPC 2024](https://solved.ac/problems/archive/contest/4303) * [TOPC 2025](https://solved.ac/problems/archive/contest/4582) * [2003 ACM Asia Programming Contest Kaohsiung Site](https://solved.ac/problems/archive/contest/1092) * [2006 ACM Asia Programming Contest Kaohsiung Site](https://solved.ac/problems/archive/contest/1093) * [2002 ACM Asia Programming Contest Kaohsiung Site](https://solved.ac/problems/archive/contest/1205) * [2019 ICPC Asia Taipei-Hsinchu Regional](https://solved.ac/problems/archive/contest/2130) * [2020 ICPC Asia Taipei-Hsinchu Regional](https://solved.ac/problems/archive/contest/2350) * **[Thailand (Group 102)](https://solved.ac/problems/archive/group/102)** * **[Asia Thailand National Programming Contest (Group 278)](https://solved.ac/problems/archive/group/278)** * [2013 ACM-ICPC Thailand National Programming Contest ](https://solved.ac/problems/archive/contest/1157) * [2010 ACM-ICPC Thailand National Programming Contest](https://solved.ac/problems/archive/contest/1164) * [2009 ACM-ICPC Thailand National Programming Contest](https://solved.ac/problems/archive/contest/1165) * [2015 ACM-ICPC Thailand National Programming Contest ](https://solved.ac/problems/archive/contest/1532) * **[Thailand Central Group-A Programming Contest (Group 289)](https://solved.ac/problems/archive/group/289)** * [Thailand Central Group-A Programming Contest 2013](https://solved.ac/problems/archive/contest/1200) * [Thailand Central Group-A Programming Contest 2014](https://solved.ac/problems/archive/contest/1287) * [Thailand Central Group-A Programming Contest 2016](https://solved.ac/problems/archive/contest/1531) * **[Thailand Central Group-B Programming Contest (Group 288)](https://solved.ac/problems/archive/group/288)** * [Thailand Central Group-B Programming Contest 2013](https://solved.ac/problems/archive/contest/1199) * [Thailand Central Group-B Programming Contest 2015](https://solved.ac/problems/archive/contest/1391) * **[Thailand First Round Online (Group 328)](https://solved.ac/problems/archive/group/328)** * [Thailand First Round Online 2014](https://solved.ac/problems/archive/contest/1390) * **[Thailand Northen Regional Programming Contest (Group 287)](https://solved.ac/problems/archive/group/287)** * [Thailand Northen Regional Programming Contest 2013](https://solved.ac/problems/archive/contest/1198) * [Thailand Northen Regional Programming Contest 2014](https://solved.ac/problems/archive/contest/1288) * **[Thailand Southern Programming Contest (Group 290)](https://solved.ac/problems/archive/group/290)** * [Thailand Southern Programming Contest 2013](https://solved.ac/problems/archive/contest/1201) * [Thailand Southern Programming Contest 2012](https://solved.ac/problems/archive/contest/1202) * [Thailand Southern Programming Contest 2011](https://solved.ac/problems/archive/contest/1203) * [Thailand Southern Programming Contest 2015](https://solved.ac/problems/archive/contest/1392) * [2012 ACM-ICPC Asia Hatyai Regional Programming Contest](https://solved.ac/problems/archive/contest/561) * [2011 ACM-ICPC Asia Phuket Regional Programming Contest](https://solved.ac/problems/archive/contest/562) * [2009 ACM-ICPC Asia Phuket Regional Programming Contest](https://solved.ac/problems/archive/contest/563) * [2013 ACM-ICPC Asia Phuket Regional Programming Contest](https://solved.ac/problems/archive/contest/1186) * [2014 ACM-ICPC Asia Bangkok Regional Programming Contest](https://solved.ac/problems/archive/contest/1319) * [2015 ACM-ICPC Asia Phuket Regional Programming Contest](https://solved.ac/problems/archive/contest/1444) * [2016 ACM-ICPC Asia-Bangkok Regional Contest](https://solved.ac/problems/archive/contest/1574) * **[Vietnam (Group 449)](https://solved.ac/problems/archive/group/449)** * [2016 Nha Trang Regional Contest](https://solved.ac/problems/archive/contest/2017) * **[Asia West Continent (Group 464)](https://solved.ac/problems/archive/group/464)** * **[Afghanistan (Group 475)](https://solved.ac/problems/archive/group/475)** * [Asia-Kabul ICPC Regional Contest 2018](https://solved.ac/problems/archive/contest/2159) * [ICPC Asia Kabul Regional Contest 2019](https://solved.ac/problems/archive/contest/2160) * **[Bangladesh (Group 275)](https://solved.ac/problems/archive/group/275)** * [Dhaka Regional Contest 2002](https://solved.ac/problems/archive/contest/1141) * [Dhaka Regional Contest 2005](https://solved.ac/problems/archive/contest/2708) * [The 1998 ACM Asia Programming Contest, Dhaka](https://solved.ac/problems/archive/contest/2724) * **[India (Group 360)](https://solved.ac/problems/archive/group/360)** * [The 2009 ACM-ICPC Asia Amritapuri Regional Contest](https://solved.ac/problems/archive/contest/1540) * [The 2000 ACM Asia Programming Contest, Kanpur](https://solved.ac/problems/archive/contest/2719) * [The 2008 Asia Amritapuri Contest](https://solved.ac/problems/archive/contest/3931) * [The 2010 ACM-ICPC Asia Amritapuri Regional Contest](https://solved.ac/problems/archive/contest/3932) * [The 2015 ACM-ICPC Asia Chennai Regional Contest](https://solved.ac/problems/archive/contest/3933) * **[Iran (Group 163)](https://solved.ac/problems/archive/group/163)** * **[Iran Internet Programming Contest (Group 172)](https://solved.ac/problems/archive/group/172)** * [IIPC 2006](https://solved.ac/problems/archive/contest/773) * [IIPC 2005](https://solved.ac/problems/archive/contest/774) * [IIPC 2015](https://solved.ac/problems/archive/contest/1504) * [IIPC 2016](https://solved.ac/problems/archive/contest/1612) * [Tehran Site 2012](https://solved.ac/problems/archive/contest/712) * [Tehran Site 2007](https://solved.ac/problems/archive/contest/713) * [Tehran Site 2006](https://solved.ac/problems/archive/contest/714) * [Tehran Site 2005](https://solved.ac/problems/archive/contest/877) * [Tehran Site 2004](https://solved.ac/problems/archive/contest/878) * [Tehran Site 2003](https://solved.ac/problems/archive/contest/879) * [Tehran Site 2002](https://solved.ac/problems/archive/contest/880) * [Tehran Site 2001](https://solved.ac/problems/archive/contest/881) * [Tehran Site 2000](https://solved.ac/problems/archive/contest/882) * [Tehran Site 1999](https://solved.ac/problems/archive/contest/883) * [Tehran Site 2008](https://solved.ac/problems/archive/contest/1161) * [Tehran Site 2010](https://solved.ac/problems/archive/contest/1162) * [Tehran Site 2009](https://solved.ac/problems/archive/contest/1163) * [Tehran Site 2013](https://solved.ac/problems/archive/contest/1190) * [Tehran Site 2014](https://solved.ac/problems/archive/contest/1321) * [Tehran Site 2015](https://solved.ac/problems/archive/contest/1503) * [Tehran Site 2016](https://solved.ac/problems/archive/contest/1611) * [Tehran Site 2017](https://solved.ac/problems/archive/contest/1820) * [Tehran Site 2018](https://solved.ac/problems/archive/contest/1980) * [Tehran Site 2019](https://solved.ac/problems/archive/contest/2154) * [Tehran Site 2020](https://solved.ac/problems/archive/contest/2395) * [2022 ICPC Asia Tehran Regional Contest](https://solved.ac/problems/archive/contest/3607) * [2023 ICPC Asia Tehran Regional Contest](https://solved.ac/problems/archive/contest/4393) * [2024 ICPC Asia Tehran Regional Contest](https://solved.ac/problems/archive/contest/4394) * **[Pakistan (Group 306)](https://solved.ac/problems/archive/group/306)** * [Asia Lahore Regional Online Contest 2014](https://solved.ac/problems/archive/contest/1311) * [Asia Lahore Regional 2014](https://solved.ac/problems/archive/contest/1323) * **[Europe (Group 10)](https://solved.ac/problems/archive/group/10)** * **[Central European Regional Contest (Group 13)](https://solved.ac/problems/archive/group/13)** * **[CTU Open Contest (Group 171)](https://solved.ac/problems/archive/group/171)** * [CTU Open Contest 2012](https://solved.ac/problems/archive/contest/758) * [CTU Open Contest 2011](https://solved.ac/problems/archive/contest/759) * [CTU Open Contest 2010](https://solved.ac/problems/archive/contest/760) * [CTU Open Contest 2009](https://solved.ac/problems/archive/contest/761) * [CTU Open Contest 2008](https://solved.ac/problems/archive/contest/762) * [CTU Open Contest 2007](https://solved.ac/problems/archive/contest/763) * [CTU Open Contest 2005](https://solved.ac/problems/archive/contest/764) * [CTU Open Contest 2004](https://solved.ac/problems/archive/contest/765) * [CTU Open Contest 2003](https://solved.ac/problems/archive/contest/766) * [CTU Open Contest 2002](https://solved.ac/problems/archive/contest/767) * [CTU Open Contest 2001](https://solved.ac/problems/archive/contest/1100) * [CTU Open Contest 2000](https://solved.ac/problems/archive/contest/1101) * [CTU Open Contest 2013](https://solved.ac/problems/archive/contest/1150) * [CTU Open Contest 2014](https://solved.ac/problems/archive/contest/1289) * [CTU Open Contest 2015](https://solved.ac/problems/archive/contest/1410) * [CTU Open Contest 2016](https://solved.ac/problems/archive/contest/1575) * [CTU Open Contest 2017](https://solved.ac/problems/archive/contest/1781) * [CTU Open Contest 2018](https://solved.ac/problems/archive/contest/1940) * [CTU Open Contest 2019](https://solved.ac/problems/archive/contest/2096) * [CTU Open Contest 2021](https://solved.ac/problems/archive/contest/2888) * [CTU Open Contest 2022](https://solved.ac/problems/archive/contest/3225) * [CTU Open Contest 2023](https://solved.ac/problems/archive/contest/4022) * [CTU Open Contest 2024](https://solved.ac/problems/archive/contest/4317) * [CTU Open Contest 2025](https://solved.ac/problems/archive/contest/4686) * **[Poland Collegiate Programming Contest (Group 226)](https://solved.ac/problems/archive/group/226)** * [AMPPZ 2011](https://solved.ac/problems/archive/contest/954) * [AMPPZ 2010](https://solved.ac/problems/archive/contest/955) * [AMPPZ 2008](https://solved.ac/problems/archive/contest/956) * [AMPPZ 2007](https://solved.ac/problems/archive/contest/957) * [AMPPZ 2005](https://solved.ac/problems/archive/contest/958) * [AMPPZ 2012](https://solved.ac/problems/archive/contest/962) * [AMPPZ 2013](https://solved.ac/problems/archive/contest/1192) * [AMPPZ 2014](https://solved.ac/problems/archive/contest/1853) * [AMPPZ 2019](https://solved.ac/problems/archive/contest/2118) * [AMPPZ 2017](https://solved.ac/problems/archive/contest/2212) * [AMPPZ 2018](https://solved.ac/problems/archive/contest/2866) * [AMPPZ 2015](https://solved.ac/problems/archive/contest/3089) * [AMPPZ 2021](https://solved.ac/problems/archive/contest/4107) * **[The Croatian Programming Contest (Group 366)](https://solved.ac/problems/archive/group/366)** * [CPC 2016](https://solved.ac/problems/archive/contest/1596) * [CPC 2015](https://solved.ac/problems/archive/contest/1597) * [CPC 2014 - 1st Round](https://solved.ac/problems/archive/contest/1598) * [CPC 2014 - 2nd Round](https://solved.ac/problems/archive/contest/1599) * [CPC 2013](https://solved.ac/problems/archive/contest/1600) * [CPC 2012](https://solved.ac/problems/archive/contest/1601) * [CPC 2011](https://solved.ac/problems/archive/contest/1602) * [CPC 2010](https://solved.ac/problems/archive/contest/1603) * [CPC 2009](https://solved.ac/problems/archive/contest/1604) * [CPC 2008](https://solved.ac/problems/archive/contest/1605) * [CPC 2007](https://solved.ac/problems/archive/contest/1606) * [CPC 2017](https://solved.ac/problems/archive/contest/1800) * [CPC 2018](https://solved.ac/problems/archive/contest/1941) * [CPC 2019](https://solved.ac/problems/archive/contest/2147) * [CPC 2020](https://solved.ac/problems/archive/contest/2357) * [CPC 2021](https://solved.ac/problems/archive/contest/3111) * [CPC 2022](https://solved.ac/problems/archive/contest/3263) * [CPC 2023](https://solved.ac/problems/archive/contest/4108) * [CPC 2024](https://solved.ac/problems/archive/contest/4396) * [CERC 2012](https://solved.ac/problems/archive/contest/33) * [CERC 2011](https://solved.ac/problems/archive/contest/34) * [CERC 2010](https://solved.ac/problems/archive/contest/35) * [CERC 2007](https://solved.ac/problems/archive/contest/36) * [CERC 2003](https://solved.ac/problems/archive/contest/37) * [CERC 2001](https://solved.ac/problems/archive/contest/38) * [CERC 2000](https://solved.ac/problems/archive/contest/39) * [CERC 1999](https://solved.ac/problems/archive/contest/40) * [CERC 1998](https://solved.ac/problems/archive/contest/41) * [CERC 1997](https://solved.ac/problems/archive/contest/723) * [CERC 1996](https://solved.ac/problems/archive/contest/724) * [CERC 1995](https://solved.ac/problems/archive/contest/887) * [CERC 2009](https://solved.ac/problems/archive/contest/950) * [CERC 2008](https://solved.ac/problems/archive/contest/951) * [CERC 2013](https://solved.ac/problems/archive/contest/1176) * [CERC 2014](https://solved.ac/problems/archive/contest/1310) * [CERC 2015](https://solved.ac/problems/archive/contest/1426) * [CERC 2016](https://solved.ac/problems/archive/contest/1580) * [CERC 2017](https://solved.ac/problems/archive/contest/1808) * [CERC 2018](https://solved.ac/problems/archive/contest/1978) * [CERC 2019](https://solved.ac/problems/archive/contest/2133) * [CERC 2002](https://solved.ac/problems/archive/contest/2361) * [CERC 2005](https://solved.ac/problems/archive/contest/2705) * [CERC 2004](https://solved.ac/problems/archive/contest/2727) * [CERC 2020](https://solved.ac/problems/archive/contest/2795) * [CERC 2021](https://solved.ac/problems/archive/contest/3108) * [CERC 2022](https://solved.ac/problems/archive/contest/3238) * [CERC 2023](https://solved.ac/problems/archive/contest/4073) * **[European Championship (Group 1093)](https://solved.ac/problems/archive/group/1093)** * [The 2024 ICPC European Championship](https://solved.ac/problems/archive/contest/4444) * [The 2025 ICPC European Championship](https://solved.ac/problems/archive/contest/4445) * **[Mid-Central European Regional Contest (Group 166)](https://solved.ac/problems/archive/group/166)** * [MCERC 2000](https://solved.ac/problems/archive/contest/721) * [MCERC 1999](https://solved.ac/problems/archive/contest/722) * **[Northwestern European Regional Contest (Group 15)](https://solved.ac/problems/archive/group/15)** * **[Benelux Algorithm Programming Contest (Group 89)](https://solved.ac/problems/archive/group/89)** * [BAPC 2012 Preliminaries](https://solved.ac/problems/archive/contest/418) * [BAPC 2011](https://solved.ac/problems/archive/contest/419) * [BAPC 2010](https://solved.ac/problems/archive/contest/420) * [BAPC 2009](https://solved.ac/problems/archive/contest/421) * [BAPC 2008](https://solved.ac/problems/archive/contest/422) * [BAPC 2005](https://solved.ac/problems/archive/contest/423) * [BAPC 2012](https://solved.ac/problems/archive/contest/424) * [BAPC 2011 Preliminaries](https://solved.ac/problems/archive/contest/425) * [BAPC 2010 Preliminaries](https://solved.ac/problems/archive/contest/426) * [BAPC 2005 Preliminaries](https://solved.ac/problems/archive/contest/427) * [BAPC 2006 Qualification](https://solved.ac/problems/archive/contest/1094) * [BAPC 2007 Preliminaries](https://solved.ac/problems/archive/contest/1095) * [BAPC 2006](https://solved.ac/problems/archive/contest/1114) * [BAPC 2008 Preliminaries](https://solved.ac/problems/archive/contest/1125) * [BAPC 2013 Preliminaries](https://solved.ac/problems/archive/contest/1155) * [BAPC 2013](https://solved.ac/problems/archive/contest/1160) * [BAPC 2014 Preliminaries](https://solved.ac/problems/archive/contest/1286) * [BAPC 2014](https://solved.ac/problems/archive/contest/1290) * [BAPC 2015 Preliminaries](https://solved.ac/problems/archive/contest/1409) * [BAPC 2015](https://solved.ac/problems/archive/contest/1427) * [BAPC 2016 Preliminaries](https://solved.ac/problems/archive/contest/1529) * [BAPC 2016](https://solved.ac/problems/archive/contest/1535) * [BAPC 2017 Preliminaries](https://solved.ac/problems/archive/contest/1782) * [BAPC 2017](https://solved.ac/problems/archive/contest/1783) * [BAPC 2018 Preliminaries](https://solved.ac/problems/archive/contest/1936) * [BAPC 2018](https://solved.ac/problems/archive/contest/1937) * [BAPC 2019 Preliminaries](https://solved.ac/problems/archive/contest/2066) * [BAPC 2019](https://solved.ac/problems/archive/contest/2094) * [BAPC 2020 Preliminaries](https://solved.ac/problems/archive/contest/2346) * [BAPC 2020](https://solved.ac/problems/archive/contest/2360) * [BAPC 2007](https://solved.ac/problems/archive/contest/2496) * [BAPC 2021 Preliminaries](https://solved.ac/problems/archive/contest/2825) * [BAPC 2021](https://solved.ac/problems/archive/contest/2826) * [BAPC 2022 Preliminaries](https://solved.ac/problems/archive/contest/3221) * [BAPC 2022](https://solved.ac/problems/archive/contest/3222) * [BAPC 2023 Preliminaries](https://solved.ac/problems/archive/contest/3987) * [BAPC 2023](https://solved.ac/problems/archive/contest/4010) * [BAPC 2024 Preliminaries](https://solved.ac/problems/archive/contest/4313) * [BAPC 2024](https://solved.ac/problems/archive/contest/4319) * [BAPC 2025 Preliminaries](https://solved.ac/problems/archive/contest/4651) * [BAPC 2025](https://solved.ac/problems/archive/contest/4652) * **[German Collegiate Programming Contest (Group 47)](https://solved.ac/problems/archive/group/47)** * [GCPC 2012](https://solved.ac/problems/archive/contest/217) * [GCPC 2011](https://solved.ac/problems/archive/contest/218) * [GCPC 2010](https://solved.ac/problems/archive/contest/219) * [GCPC 2013](https://solved.ac/problems/archive/contest/1110) * [GCPC 2014](https://solved.ac/problems/archive/contest/1285) * [GCPC 2015](https://solved.ac/problems/archive/contest/1355) * [GCPC 2016](https://solved.ac/problems/archive/contest/1509) * [GCPC 2017](https://solved.ac/problems/archive/contest/1907) * [GCPC 2018](https://solved.ac/problems/archive/contest/1908) * [GCPC 2019](https://solved.ac/problems/archive/contest/2119) * [GCPC 2020](https://solved.ac/problems/archive/contest/2427) * [GCPC 2021](https://solved.ac/problems/archive/contest/3127) * [GCPC 2022](https://solved.ac/problems/archive/contest/3223) * [GCPC 2023](https://solved.ac/problems/archive/contest/3625) * [GCPC 2024](https://solved.ac/problems/archive/contest/4304) * [GCPC 2025](https://solved.ac/problems/archive/contest/4638) * **[Nordic Collegiate Programming Contest (Group 46)](https://solved.ac/problems/archive/group/46)** * [NCPC 2012](https://solved.ac/problems/archive/contest/209) * [NCPC 2011](https://solved.ac/problems/archive/contest/210) * [NCPC 2010](https://solved.ac/problems/archive/contest/211) * [NCPC 2009](https://solved.ac/problems/archive/contest/212) * [NCPC 2008](https://solved.ac/problems/archive/contest/213) * [NCPC 2007](https://solved.ac/problems/archive/contest/214) * [NCPC 2006](https://solved.ac/problems/archive/contest/215) * [NCPC 2005](https://solved.ac/problems/archive/contest/216) * [NCPC 2004](https://solved.ac/problems/archive/contest/768) * [NCPC 2003](https://solved.ac/problems/archive/contest/769) * [NCPC 2002](https://solved.ac/problems/archive/contest/770) * [NCPC 2001](https://solved.ac/problems/archive/contest/771) * [NCPC 2000](https://solved.ac/problems/archive/contest/772) * [NCPC 2013](https://solved.ac/problems/archive/contest/1146) * [NCPC 2014](https://solved.ac/problems/archive/contest/1284) * [NCPC 2015](https://solved.ac/problems/archive/contest/1393) * [NCPC 2016](https://solved.ac/problems/archive/contest/1530) * [NCPC 2017](https://solved.ac/problems/archive/contest/1784) * [NCPC 2018](https://solved.ac/problems/archive/contest/1938) * [NCPC 2019](https://solved.ac/problems/archive/contest/2116) * [NCPC 2020](https://solved.ac/problems/archive/contest/2447) * [NCPC 2021](https://solved.ac/problems/archive/contest/2816) * [NCPC 2022](https://solved.ac/problems/archive/contest/3224) * [NCPC 2023](https://solved.ac/problems/archive/contest/4004) * [NCPC 2024](https://solved.ac/problems/archive/contest/4314) * [NCPC 2025](https://solved.ac/problems/archive/contest/4653) * **[The UK & Ireland Programming Contest (Group 332)](https://solved.ac/problems/archive/group/332)** * [UKIEPC 2015](https://solved.ac/problems/archive/contest/1412) * [UKIEPC 2016](https://solved.ac/problems/archive/contest/1542) * [UKIEPC 2017](https://solved.ac/problems/archive/contest/1785) * [UKIEPC 2018](https://solved.ac/problems/archive/contest/2068) * [UKIEPC 2019](https://solved.ac/problems/archive/contest/2095) * [UKIEPC 2020](https://solved.ac/problems/archive/contest/2358) * [UKIEPC 2021](https://solved.ac/problems/archive/contest/3057) * [UKIEPC 2023](https://solved.ac/problems/archive/contest/4017) * [UKIEPC 2024](https://solved.ac/problems/archive/contest/4316) * [UKIEPC 2025](https://solved.ac/problems/archive/contest/4655) * [NWERC 2012](https://solved.ac/problems/archive/contest/49) * [NWERC 2011](https://solved.ac/problems/archive/contest/50) * [NWERC 2010](https://solved.ac/problems/archive/contest/51) * [NWERC 2009](https://solved.ac/problems/archive/contest/52) * [NWERC 2008](https://solved.ac/problems/archive/contest/53) * [NWERC 2007](https://solved.ac/problems/archive/contest/54) * [NWERC 2006](https://solved.ac/problems/archive/contest/55) * [NWERC 2005](https://solved.ac/problems/archive/contest/56) * [NWERC 2001](https://solved.ac/problems/archive/contest/728) * [NWERC 2004](https://solved.ac/problems/archive/contest/888) * [NWERC 2003](https://solved.ac/problems/archive/contest/952) * [NWERC 2002](https://solved.ac/problems/archive/contest/953) * [NWERC 2013](https://solved.ac/problems/archive/contest/1188) * [NWERC 2014](https://solved.ac/problems/archive/contest/1312) * [NWERC 2015](https://solved.ac/problems/archive/contest/1431) * [NWERC 2016](https://solved.ac/problems/archive/contest/1578) * [NWERC 2017](https://solved.ac/problems/archive/contest/1852) * [NWERC 2018](https://solved.ac/problems/archive/contest/1967) * [NWERC 2019](https://solved.ac/problems/archive/contest/2121) * [NWERC 2020](https://solved.ac/problems/archive/contest/2488) * [NWERC 2021](https://solved.ac/problems/archive/contest/2887) * [NWERC 2022](https://solved.ac/problems/archive/contest/3237) * [NWERC 2023](https://solved.ac/problems/archive/contest/4062) * [NWERC 2024](https://solved.ac/problems/archive/contest/4356) * [NWERC 2025](https://solved.ac/problems/archive/contest/4637) * **[Southeastern European Regional Contest (Group 12)](https://solved.ac/problems/archive/group/12)** * **[All-Ukrainian Collegiate Programming Contest (Group 212)](https://solved.ac/problems/archive/group/212)** * [AUCPC Semi-Final 2010](https://solved.ac/problems/archive/contest/899) * [AUCPC 2010](https://solved.ac/problems/archive/contest/900) * **[Greek Collegiate Programming Contest (Group 990)](https://solved.ac/problems/archive/group/990)** * [GRCPC 2023](https://solved.ac/problems/archive/contest/4025) * [SEERC 2012](https://solved.ac/problems/archive/contest/22) * [SEERC 2011](https://solved.ac/problems/archive/contest/23) * [SEERC 2010](https://solved.ac/problems/archive/contest/24) * [SEERC 2009](https://solved.ac/problems/archive/contest/25) * [SEERC 2008](https://solved.ac/problems/archive/contest/26) * [SEERC 2007](https://solved.ac/problems/archive/contest/27) * [SEERC 2006](https://solved.ac/problems/archive/contest/28) * [SEERC 2005](https://solved.ac/problems/archive/contest/29) * [SEERC 2004](https://solved.ac/problems/archive/contest/30) * [SEERC 2003](https://solved.ac/problems/archive/contest/31) * [SEERC 2002](https://solved.ac/problems/archive/contest/32) * [SEERC 2013](https://solved.ac/problems/archive/contest/1149) * [SEERC 2014](https://solved.ac/problems/archive/contest/1293) * [SEERC 2015](https://solved.ac/problems/archive/contest/1407) * [SEERC 2016](https://solved.ac/problems/archive/contest/1571) * [SEERC 2017](https://solved.ac/problems/archive/contest/1825) * [SEERC 2018](https://solved.ac/problems/archive/contest/1939) * [SEERC 2019](https://solved.ac/problems/archive/contest/2110) * [SEERC 2020](https://solved.ac/problems/archive/contest/2566) * [SEERC 2001](https://solved.ac/problems/archive/contest/2725) * [SEERC 2021](https://solved.ac/problems/archive/contest/4106) * **[Southwestern European Regional Contest (Group 16)](https://solved.ac/problems/archive/group/16)** * **[TĆ©lĆ©com ParisTech Internal Selection (Group 433)](https://solved.ac/problems/archive/group/433)** * [Concours interne de programmation TĆ©lĆ©com ParisTech 2018](https://solved.ac/problems/archive/contest/1910) * [Concours interne de programmation TĆ©lĆ©com ParisTech 2017](https://solved.ac/problems/archive/contest/1911) * [Concours interne de programmation TĆ©lĆ©com ParisTech 2019](https://solved.ac/problems/archive/contest/2351) * [SWERC 2012](https://solved.ac/problems/archive/contest/57) * [SWERC 2011](https://solved.ac/problems/archive/contest/58) * [SWERC 2010](https://solved.ac/problems/archive/contest/59) * [SWERC 2009](https://solved.ac/problems/archive/contest/60) * [SWERC 2008](https://solved.ac/problems/archive/contest/61) * [SWERC 2002](https://solved.ac/problems/archive/contest/717) * [SWERC 1998](https://solved.ac/problems/archive/contest/718) * [SWERC 1997](https://solved.ac/problems/archive/contest/719) * [SWERC 1996](https://solved.ac/problems/archive/contest/734) * [SWERC 1995](https://solved.ac/problems/archive/contest/735) * [SWERC 2005](https://solved.ac/problems/archive/contest/896) * [SWERC 2013](https://solved.ac/problems/archive/contest/1184) * [SWERC 2014](https://solved.ac/problems/archive/contest/1313) * [SWERC 2015](https://solved.ac/problems/archive/contest/1432) * [SWERC 2016](https://solved.ac/problems/archive/contest/1581) * [SWERC 2017](https://solved.ac/problems/archive/contest/1826) * [SWERC 2018](https://solved.ac/problems/archive/contest/2067) * [SWERC 2019](https://solved.ac/problems/archive/contest/2148) * [SWERC 2020-2021](https://solved.ac/problems/archive/contest/2465) * [SWERC 2021-2022](https://solved.ac/problems/archive/contest/3100) * [SWERC 2022-2023](https://solved.ac/problems/archive/contest/3518) * [SWERC 2023-2024](https://solved.ac/problems/archive/contest/4151) * [SWERC 2025](https://solved.ac/problems/archive/contest/4654) * **[Latin America (Group 103)](https://solved.ac/problems/archive/group/103)** * **[Latin America Championship (Group 1029)](https://solved.ac/problems/archive/group/1029)** * [The 2024 ICPC Latin America Championship](https://solved.ac/problems/archive/contest/4195) * [The 2025 ICPC Latin America Championship](https://solved.ac/problems/archive/contest/4596) * **[Latin America Regional Contests (Group 1028)](https://solved.ac/problems/archive/group/1028)** * [Latin America Regional Contests 2012](https://solved.ac/problems/archive/contest/564) * [Latin America Regional Contests 2011](https://solved.ac/problems/archive/contest/565) * [Latin America Regional Contests 2010](https://solved.ac/problems/archive/contest/566) * [Latin America Regional Contests 2009](https://solved.ac/problems/archive/contest/567) * [South America Regional Contests 2008](https://solved.ac/problems/archive/contest/568) * [South America Regional Contests 2007](https://solved.ac/problems/archive/contest/569) * [South America Regional Contests 2006](https://solved.ac/problems/archive/contest/570) * [South America Regional Contests 2005](https://solved.ac/problems/archive/contest/571) * [South America Regional Contests 2004](https://solved.ac/problems/archive/contest/572) * [South America Regional Contests 2003](https://solved.ac/problems/archive/contest/573) * [South America Regional Contests 2002](https://solved.ac/problems/archive/contest/574) * [Latin America Regional Contests 2013](https://solved.ac/problems/archive/contest/1175) * [Latin America Regional Contests 2014](https://solved.ac/problems/archive/contest/1297) * [Latin America Regional Contests 2015](https://solved.ac/problems/archive/contest/1418) * [Latin America Regional Contests 2016](https://solved.ac/problems/archive/contest/1572) * [Latin America Regional Contests 2017](https://solved.ac/problems/archive/contest/1787) * [Latin America Regional Contests 2018](https://solved.ac/problems/archive/contest/1956) * [Latin America Regional Contests 2019](https://solved.ac/problems/archive/contest/2117) * [Latin America Regional Contests 2020](https://solved.ac/problems/archive/contest/2611) * [South America Regional Contests 1998](https://solved.ac/problems/archive/contest/2723) * [Latin America Regional Contests 2021](https://solved.ac/problems/archive/contest/3088) * [Latin America Regional Contests 2022](https://solved.ac/problems/archive/contest/3579) * [Latin America Regional Contests 2023](https://solved.ac/problems/archive/contest/4006) * [Latin America Regional Contests 2024](https://solved.ac/problems/archive/contest/4388) * [Latin America Regional Contests 2025](https://solved.ac/problems/archive/contest/4687) * **[Sub-Regional Brasil do ACM ICPC (Group 362)](https://solved.ac/problems/archive/group/362)** * [A Primeira Fase da Maratona de ProgramaĆ§Ć£o 2016](https://solved.ac/problems/archive/contest/1545) * [A Primeira Fase da Maratona de ProgramaĆ§Ć£o 2015](https://solved.ac/problems/archive/contest/1546) * [A Primeira Fase da Maratona de ProgramaĆ§Ć£o 2014](https://solved.ac/problems/archive/contest/1547) * [A Primeira Fase da Maratona de ProgramaĆ§Ć£o 2013](https://solved.ac/problems/archive/contest/1548) * [A Primeira Fase da Maratona de ProgramaĆ§Ć£o 2012](https://solved.ac/problems/archive/contest/1549) * [A Primeira Fase da Maratona de ProgramaĆ§Ć£o 2011](https://solved.ac/problems/archive/contest/1550) * [A Primeira Fase da Maratona de ProgramaĆ§Ć£o 2010](https://solved.ac/problems/archive/contest/1551) * [A Primeira Fase da Maratona de ProgramaĆ§Ć£o 2009](https://solved.ac/problems/archive/contest/1552) * [A Primeira Fase da Maratona de ProgramaĆ§Ć£o 2008](https://solved.ac/problems/archive/contest/1553) * [A Primeira Fase da Maratona de ProgramaĆ§Ć£o 2007](https://solved.ac/problems/archive/contest/1554) * [A Primeira Fase da Maratona de ProgramaĆ§Ć£o 2006](https://solved.ac/problems/archive/contest/1555) * [A Primeira Fase da Maratona de ProgramaĆ§Ć£o 2005](https://solved.ac/problems/archive/contest/1556) * [A Primeira Fase da Maratona de ProgramaĆ§Ć£o 2017](https://solved.ac/problems/archive/contest/1786) * [A Primeira Fase da Maratona de ProgramaĆ§Ć£o 2018](https://solved.ac/problems/archive/contest/1950) * [Maratona de ProgramaĆ§Ć£o SBC 2019](https://solved.ac/problems/archive/contest/2065) * [Maratona de ProgramaĆ§Ć£o SBC 2020](https://solved.ac/problems/archive/contest/2352) * [Maratona de ProgramaĆ§Ć£o SBC 2021](https://solved.ac/problems/archive/contest/2827) * [Maratona de ProgramaĆ§Ć£o da SBC 2022](https://solved.ac/problems/archive/contest/3253) * [Maratona de ProgramaĆ§Ć£o da SBC 2023](https://solved.ac/problems/archive/contest/3902) * [Maratona de ProgramaĆ§Ć£o da SBC 2022 - Extra VitĆ³ria Site](https://solved.ac/problems/archive/contest/4029) * [Maratona de ProgramaĆ§Ć£o da SBC 2024](https://solved.ac/problems/archive/contest/4298) * [Maratona SBC de ProgramaĆ§Ć£o 2025](https://solved.ac/problems/archive/contest/4601) * **[North America (Group 8)](https://solved.ac/problems/archive/group/8)** * **[East Central North America Regional (Group 32)](https://solved.ac/problems/archive/group/32)** * [2012 East Central Regional Contest](https://solved.ac/problems/archive/contest/114) * [2011 East Central Regional Contest](https://solved.ac/problems/archive/contest/115) * [2010 East Central Regional Contest](https://solved.ac/problems/archive/contest/116) * [2009 East Central Regional Contest](https://solved.ac/problems/archive/contest/117) * [2008 East Central Regional Contest](https://solved.ac/problems/archive/contest/118) * [2007 East Central Regional Contest](https://solved.ac/problems/archive/contest/119) * [2006 East Central Regional Contest](https://solved.ac/problems/archive/contest/120) * [2005 East Central Regional Contest](https://solved.ac/problems/archive/contest/121) * [2004 East Central Regional Contest](https://solved.ac/problems/archive/contest/122) * [2003 East Central Regional Contest](https://solved.ac/problems/archive/contest/123) * [2002 East Central Regional Contest](https://solved.ac/problems/archive/contest/124) * [2001 East Central Regional Contest](https://solved.ac/problems/archive/contest/885) * [2000 East Central Regional Contest](https://solved.ac/problems/archive/contest/886) * [1998 East Central Regional Contest](https://solved.ac/problems/archive/contest/1098) * [1999 East Central Regional Contest](https://solved.ac/problems/archive/contest/1108) * [2013 East Central Regional Contest](https://solved.ac/problems/archive/contest/1214) * [2014 East Central Regional Contest](https://solved.ac/problems/archive/contest/1296) * [2015 East Central Regional Contest](https://solved.ac/problems/archive/contest/1441) * [2016 East Central Regional Contest](https://solved.ac/problems/archive/contest/1788) * [2017 East Central Regional Contest](https://solved.ac/problems/archive/contest/1789) * [2018 East Central Regional Contest](https://solved.ac/problems/archive/contest/2001) * [2019 East Central Regional Contest](https://solved.ac/problems/archive/contest/2098) * [2020 East Central Regional Contest](https://solved.ac/problems/archive/contest/2456) * [2021 East Central Regional Contest](https://solved.ac/problems/archive/contest/3033) * [2022-2023 East Central Regional Contest](https://solved.ac/problems/archive/contest/3521) * [2023-2024 East Central NA Regional Contest](https://solved.ac/problems/archive/contest/4011) * [2024 East Central NA Regional Contest](https://solved.ac/problems/archive/contest/4341) * [2025 East Central NA Regional Contest](https://solved.ac/problems/archive/contest/4685) * **[Greater New York Region (Group 9)](https://solved.ac/problems/archive/group/9)** * [2012 Greater New York Programming Contest](https://solved.ac/problems/archive/contest/4) * [2011 Greater New York Programming Contest](https://solved.ac/problems/archive/contest/5) * [2010 Greater New York Programming Contest](https://solved.ac/problems/archive/contest/6) * [2009 Greater New York Programming Contest](https://solved.ac/problems/archive/contest/7) * [2008 Greater New York Programming Contest](https://solved.ac/problems/archive/contest/8) * [2007 Greater New York Programming Contest](https://solved.ac/problems/archive/contest/9) * [2006 Greater New York Programming Contest](https://solved.ac/problems/archive/contest/10) * [2005 Greater New York Programming Contest](https://solved.ac/problems/archive/contest/11) * [2004 Greater New York Programming Contest](https://solved.ac/problems/archive/contest/12) * [2003 Greater New York Programming Contest](https://solved.ac/problems/archive/contest/13) * [2002 Greater New York Programming Contest](https://solved.ac/problems/archive/contest/725) * [2001 Greater New York Programming Contest](https://solved.ac/problems/archive/contest/726) * [2000 Greater New York Programming Contest](https://solved.ac/problems/archive/contest/727) * [2013 Greater New York Programming Contest](https://solved.ac/problems/archive/contest/1170) * [2014 Greater New York Programming Contest](https://solved.ac/problems/archive/contest/1301) * [2015 Greater New York Programming Contest](https://solved.ac/problems/archive/contest/1416) * [2016 Greater New York Programming Contest](https://solved.ac/problems/archive/contest/1573) * [2017 Greater New York Programming Contest](https://solved.ac/problems/archive/contest/1813) * [2018 Greater New York Programming Contest](https://solved.ac/problems/archive/contest/1960) * [2019 Greater New York Programming Contest](https://solved.ac/problems/archive/contest/2099) * [2020 Greater New York Programming Contest](https://solved.ac/problems/archive/contest/2484) * [2021 Greater New York Programming Contest](https://solved.ac/problems/archive/contest/3059) * [2022 Greater New York Programming Contest](https://solved.ac/problems/archive/contest/3555) * [2023 Greater New York Programming Contest](https://solved.ac/problems/archive/contest/4013) * [2024 Greater New York Regional Contest](https://solved.ac/problems/archive/contest/4342) * **[Mid-Atlantic Regional (Group 38)](https://solved.ac/problems/archive/group/38)** * **[2022 Mid-Atlantic USA Regional Contest (Group 825)](https://solved.ac/problems/archive/group/825)** * [Division 1](https://solved.ac/problems/archive/contest/3506) * [Division 2](https://solved.ac/problems/archive/contest/3509) * **[2023 Mid-Atlantic USA Regional Contest (Group 1021)](https://solved.ac/problems/archive/group/1021)** * [Division 1](https://solved.ac/problems/archive/contest/4161) * [Division 2](https://solved.ac/problems/archive/contest/4162) * **[2024 Mid-Atlantic USA Regional Contest (Group 1158)](https://solved.ac/problems/archive/group/1158)** * [Division 1](https://solved.ac/problems/archive/contest/4677) * [Division 2](https://solved.ac/problems/archive/contest/4678) * **[2025 Mid-Atlantic USA Regional Contest (Group 1161)](https://solved.ac/problems/archive/group/1161)** * [Division 1](https://solved.ac/problems/archive/contest/4683) * [Division 2](https://solved.ac/problems/archive/contest/4684) * [2012 Mid-Atlantic Regional Programming Contest](https://solved.ac/problems/archive/contest/158) * [2011 Mid-Atlantic Regional Programming Contest](https://solved.ac/problems/archive/contest/159) * [2010 Mid-Atlantic Regional Programming Contest](https://solved.ac/problems/archive/contest/160) * [2009 Mid-Atlantic Regional Programming Contest](https://solved.ac/problems/archive/contest/161) * [2008 Mid-Atlantic Regional Programming Contest](https://solved.ac/problems/archive/contest/162) * [2007 Mid-Atlantic Regional Programming Contest](https://solved.ac/problems/archive/contest/163) * [2006 Mid-Atlantic Regional Programming Contest](https://solved.ac/problems/archive/contest/164) * [2005 Mid-Atlantic Regional Programming Contest](https://solved.ac/problems/archive/contest/165) * [2004 Mid-Atlantic Regional Programming Contest](https://solved.ac/problems/archive/contest/166) * [2003 Mid-Atlantic Regional Programming Contest](https://solved.ac/problems/archive/contest/167) * [2002 Mid-Atlantic Regional Programming Contest](https://solved.ac/problems/archive/contest/168) * [1996 Mid-Atlantic Regional Programming Contest](https://solved.ac/problems/archive/contest/743) * [2001 Mid-Atlantic Regional Programming Contest](https://solved.ac/problems/archive/contest/1096) * [2020 Mid-Atlantic USA Regional Contest](https://solved.ac/problems/archive/contest/2462) * [2021 Mid-Atlantic USA Regional Contest](https://solved.ac/problems/archive/contest/3036) * [2015 Mid-Atlantic Regional Programming Contest](https://solved.ac/problems/archive/contest/4244) * [2016 Mid-Atlantic Regional Programming Contest](https://solved.ac/problems/archive/contest/4245) * [2017 Mid-Atlantic USA Regional Contest](https://solved.ac/problems/archive/contest/4246) * [2018 Mid-Atlantic USA Regional Contest](https://solved.ac/problems/archive/contest/4247) * **[Mid-Central Regional (Group 37)](https://solved.ac/problems/archive/group/37)** * [2012 Mid-Central Regional Programming Contest](https://solved.ac/problems/archive/contest/140) * [2011 Mid-Central Regional Programming Contest](https://solved.ac/problems/archive/contest/141) * [2010 Mid-Central Regional Programming Contest](https://solved.ac/problems/archive/contest/142) * [2009 Mid-Central Regional Programming Contest](https://solved.ac/problems/archive/contest/143) * [2008 Mid-Central Regional Programming Contest](https://solved.ac/problems/archive/contest/144) * [2007 Mid-Central Regional Programming Contest](https://solved.ac/problems/archive/contest/145) * [2006 Mid-Central Regional Programming Contest](https://solved.ac/problems/archive/contest/146) * [2005 Mid-Central Regional Programming Contest](https://solved.ac/problems/archive/contest/147) * [2004 Mid-Central Regional Programming Contest](https://solved.ac/problems/archive/contest/148) * [2003 Mid-Central Regional Programming Contest](https://solved.ac/problems/archive/contest/149) * [2002 Mid-Central Regional Programming Contest](https://solved.ac/problems/archive/contest/150) * [2001 Mid-Central Regional Programming Contest](https://solved.ac/problems/archive/contest/151) * [2000 Mid-Central Regional Programming Contest](https://solved.ac/problems/archive/contest/152) * [1999 Mid-Central Regional Programming Contest](https://solved.ac/problems/archive/contest/153) * [1998 Mid-Central Regional Programming Contest](https://solved.ac/problems/archive/contest/154) * [1997 Mid-Central Regional Programming Contest](https://solved.ac/problems/archive/contest/155) * [1996 Mid-Central Regional Programming Contest](https://solved.ac/problems/archive/contest/156) * [1995 Mid-Central Regional Programming Contest](https://solved.ac/problems/archive/contest/157) * [2013 Mid-Central Regional Programming Contest](https://solved.ac/problems/archive/contest/1167) * [2014 Mid-Central Regional Programming Contest](https://solved.ac/problems/archive/contest/1292) * [2015 Mid-Central Regional Programming Contest](https://solved.ac/problems/archive/contest/1417) * [2016 Mid-Central Regional Programming Contest](https://solved.ac/problems/archive/contest/1558) * [2017 Mid-Central Regional Programming Contest](https://solved.ac/problems/archive/contest/1790) * [2018 Mid-Central Regional Programming Contest](https://solved.ac/problems/archive/contest/1946) * [2019 Mid-Central Regional Programming Contest](https://solved.ac/problems/archive/contest/2136) * [1994 Mid-Central Regional Programming Contest](https://solved.ac/problems/archive/contest/2362) * [1993 Mid-Central Regional Programming Contest](https://solved.ac/problems/archive/contest/2363) * [2020 Mid-Central Regional Programming Contest](https://solved.ac/problems/archive/contest/2459) * [Mid-Central USA Programming Contest 2021](https://solved.ac/problems/archive/contest/3042) * [2022 Mid-Central USA Regional Contest](https://solved.ac/problems/archive/contest/3512) * [2023 Mid-Central USA Programming Contest](https://solved.ac/problems/archive/contest/4158) * [2024 Mid-Central USA Programming Contest](https://solved.ac/problems/archive/contest/4332) * **[North America Championship (Group 481)](https://solved.ac/problems/archive/group/481)** * [North America Championship 2020](https://solved.ac/problems/archive/contest/2173) * [North America Championship 2021](https://solved.ac/problems/archive/contest/2744) * [North America Championship 2022](https://solved.ac/problems/archive/contest/3126) * [North America Championship 2023](https://solved.ac/problems/archive/contest/3594) * [North America Championship 2024](https://solved.ac/problems/archive/contest/4226) * [North America Championship 2025](https://solved.ac/problems/archive/contest/4543) * [North America Championship 2026](https://solved.ac/problems/archive/contest/4690) * **[North America Division Championships (Group 524)](https://solved.ac/problems/archive/group/524)** * [2021 ICPC North America Division Championships](https://solved.ac/problems/archive/contest/2517) * **[North America Qualification Contest (Group 305)](https://solved.ac/problems/archive/group/305)** * [ACM-ICPC North America Qualifier 2014](https://solved.ac/problems/archive/contest/1307) * [ACM-ICPC North America Qualifier 2013](https://solved.ac/problems/archive/contest/1308) * [ACM-ICPC North America Qualifier 2012](https://solved.ac/problems/archive/contest/1309) * [ACM-ICPC North America Qualifier 2015](https://solved.ac/problems/archive/contest/1372) * [ACM-ICPC North America Qualifier 2016](https://solved.ac/problems/archive/contest/1523) * [ACM-ICPC North America Qualifier 2017](https://solved.ac/problems/archive/contest/1827) * [ACM-ICPC North America Qualifier 2018](https://solved.ac/problems/archive/contest/1969) * [ICPC North America Qualifier 2019](https://solved.ac/problems/archive/contest/2070) * [ICPC North America Qualifier 2020](https://solved.ac/problems/archive/contest/2440) * [ICPC North America Qualifier 2021](https://solved.ac/problems/archive/contest/3015) * [ICPC North America Qualifier 2022](https://solved.ac/problems/archive/contest/3475) * [ICPC North America Qualifier 2023](https://solved.ac/problems/archive/contest/4130) * [ICPC North America Qualifier 2024](https://solved.ac/problems/archive/contest/4310) * [ICPC North America Qualifier 2025](https://solved.ac/problems/archive/contest/4589) * **[North Central North America Regional (Group 167)](https://solved.ac/problems/archive/group/167)** * [NCNA 1997](https://solved.ac/problems/archive/contest/732) * [NCNA 1996](https://solved.ac/problems/archive/contest/733) * [NCNA 1993](https://solved.ac/problems/archive/contest/742) * [NCNA 2013](https://solved.ac/problems/archive/contest/1231) * [NCNA 2014](https://solved.ac/problems/archive/contest/1302) * [NCNA 2017](https://solved.ac/problems/archive/contest/1944) * [NCNA 2018](https://solved.ac/problems/archive/contest/1955) * [NCNA 2020](https://solved.ac/problems/archive/contest/2457) * [NCNA 2019](https://solved.ac/problems/archive/contest/2464) * [2021 North Central NA Regional Contest](https://solved.ac/problems/archive/contest/3037) * [2022 North Central NA Regional Contest](https://solved.ac/problems/archive/contest/3513) * [2023 North Central NA Regional Contest](https://solved.ac/problems/archive/contest/4015) * [2024 North Central NA Regional Contest](https://solved.ac/problems/archive/contest/4330) * **[Northeast North America Regional (Group 648)](https://solved.ac/problems/archive/group/648)** * [2021 Northeast North America Regional Contest](https://solved.ac/problems/archive/contest/3043) * [2024 Northeast North America Regional Contest](https://solved.ac/problems/archive/contest/4343) * **[Pacific Northwest Regional (Group 33)](https://solved.ac/problems/archive/group/33)** * **[2014 Pacific Northwest Region Programming Contest (Group 808)](https://solved.ac/problems/archive/group/808)** * [Division 1](https://solved.ac/problems/archive/contest/1317) * [Division 2](https://solved.ac/problems/archive/contest/1318) * **[2015 Pacific Northwest Region Programming Contest (Group 809)](https://solved.ac/problems/archive/group/809)** * [Division 1](https://solved.ac/problems/archive/contest/1424) * [Division 2](https://solved.ac/problems/archive/contest/1425) * **[2016 Pacific Northwest Region Programming Contest (Group 810)](https://solved.ac/problems/archive/group/810)** * [Division 1](https://solved.ac/problems/archive/contest/1583) * [Division 2](https://solved.ac/problems/archive/contest/1584) * **[2017 Pacific Northwest Region Programming Contest (Group 811)](https://solved.ac/problems/archive/group/811)** * [Division 1](https://solved.ac/problems/archive/contest/1791) * [Division 2](https://solved.ac/problems/archive/contest/1792) * **[2018 Pacific Northwest Region Programming Contest (Group 812)](https://solved.ac/problems/archive/group/812)** * [Division 1](https://solved.ac/problems/archive/contest/1976) * [Division 2](https://solved.ac/problems/archive/contest/1977) * **[2019 ICPC Pacific Northwest Region (Group 813)](https://solved.ac/problems/archive/group/813)** * [Division 1](https://solved.ac/problems/archive/contest/2131) * [Division 2](https://solved.ac/problems/archive/contest/2132) * **[2020 ICPC Pacific Northwest Region (Group 814)](https://solved.ac/problems/archive/group/814)** * [Division 1](https://solved.ac/problems/archive/contest/2460) * [Division 2](https://solved.ac/problems/archive/contest/2461) * **[2021 ICPC Pacific Northwest Region (Group 815)](https://solved.ac/problems/archive/group/815)** * [Division 1](https://solved.ac/problems/archive/contest/3038) * [Division 2](https://solved.ac/problems/archive/contest/3039) * **[2022 ICPC Pacific Northwest Region (Group 828)](https://solved.ac/problems/archive/group/828)** * [Division 1](https://solved.ac/problems/archive/contest/3514) * [Division 2](https://solved.ac/problems/archive/contest/3515) * **[2023 ICPC Pacific Northwest Region (Group 1019)](https://solved.ac/problems/archive/group/1019)** * [Division 1](https://solved.ac/problems/archive/contest/4156) * [Division 2](https://solved.ac/problems/archive/contest/4157) * **[2025 ICPC Pacific Northwest Regional (Group 1141)](https://solved.ac/problems/archive/group/1141)** * [Division 1](https://solved.ac/problems/archive/contest/4602) * [Division 2](https://solved.ac/problems/archive/contest/4603) * **[The 2024 Pacific Northwest Regional Contest (Group 1066)](https://solved.ac/problems/archive/group/1066)** * [Division 1](https://solved.ac/problems/archive/contest/4339) * [Division 2](https://solved.ac/problems/archive/contest/4340) * [2012 Pacific Northwest Region Programming Contest](https://solved.ac/problems/archive/contest/125) * [2011 Pacific Northwest Region Programming Contest](https://solved.ac/problems/archive/contest/126) * [2010 Pacific Northwest Region Programming Contest](https://solved.ac/problems/archive/contest/127) * [2009 Pacific Northwest Region Programming Contest](https://solved.ac/problems/archive/contest/128) * [2008 Pacific Northwest Region Programming Contest](https://solved.ac/problems/archive/contest/129) * [2007 Pacific Northwest Region Programming Contest](https://solved.ac/problems/archive/contest/130) * [2006 Pacific Northwest Region Programming Contest](https://solved.ac/problems/archive/contest/1103) * [2005 Pacific Northwest Region Programming Contest](https://solved.ac/problems/archive/contest/1104) * [2004 Pacific Northwest Region Programming Contest](https://solved.ac/problems/archive/contest/1105) * [1999 Pacific Northwest Region Programming Contest](https://solved.ac/problems/archive/contest/1106) * [1998 Pacific Northwest Region Programming Contest](https://solved.ac/problems/archive/contest/1107) * [2013 Pacific Northwest Region Programming Contest](https://solved.ac/problems/archive/contest/1173) * **[Rocky Mountain Regional (Group 41)](https://solved.ac/problems/archive/group/41)** * **[Alberta Collegiate Programming Contest (Group 270)](https://solved.ac/problems/archive/group/270)** * [ACPC 2012](https://solved.ac/problems/archive/contest/1126) * [ACPC 2003](https://solved.ac/problems/archive/contest/1127) * [ACPC 2000](https://solved.ac/problems/archive/contest/1128) * [ACPC 1999](https://solved.ac/problems/archive/contest/1129) * [2012 Rocky Mountain Regional Contest](https://solved.ac/problems/archive/contest/181) * [2011 Rocky Mountain Regional Contest](https://solved.ac/problems/archive/contest/182) * [2010 Rocky Mountain Regional Contest](https://solved.ac/problems/archive/contest/183) * [2009 Rocky Mountain Regional Contest](https://solved.ac/problems/archive/contest/184) * [2008 Rocky Mountain Regional Contest](https://solved.ac/problems/archive/contest/185) * [2007 Rocky Mountain Regional Contest](https://solved.ac/problems/archive/contest/186) * [2006 Rocky Mountain Regional Contest](https://solved.ac/problems/archive/contest/187) * [2005 Rocky Mountain Regional Contest](https://solved.ac/problems/archive/contest/188) * [2004 Rocky Mountain Regional Contest](https://solved.ac/problems/archive/contest/189) * [2003 Rocky Mountain Regional Contest](https://solved.ac/problems/archive/contest/190) * [2013 Rocky Mountain Regional Contest](https://solved.ac/problems/archive/contest/1156) * [2014 Rocky Mountain Regional Contest](https://solved.ac/problems/archive/contest/1298) * [2015 Rocky Mountain Regional Contest](https://solved.ac/problems/archive/contest/1428) * [2016 Rocky Mountain Regional Contest](https://solved.ac/problems/archive/contest/1761) * [2017 Rocky Mountain Regional Contest](https://solved.ac/problems/archive/contest/1811) * [2019 Rocky Mountain Regional Contest](https://solved.ac/problems/archive/contest/2100) * [2020 Rocky Mountain Regional Contest](https://solved.ac/problems/archive/contest/2466) * [2018 Rocky Mountain Regional Contest](https://solved.ac/problems/archive/contest/2613) * [2021 Rocky Mountain Regional Contest](https://solved.ac/problems/archive/contest/3061) * [2022 Rocky Mountain Regional Contest](https://solved.ac/problems/archive/contest/3516) * [2023 Rocky Mountain Regional Contest](https://solved.ac/problems/archive/contest/4016) * [2024 Rocky Mountain Regional Contest](https://solved.ac/problems/archive/contest/4331) * **[South Central USA Regional (Group 39)](https://solved.ac/problems/archive/group/39)** * **[2021 South Central USA Regional Contest (Group 816)](https://solved.ac/problems/archive/group/816)** * [Division 1](https://solved.ac/problems/archive/contest/3040) * [Division 2](https://solved.ac/problems/archive/contest/3041) * **[2022 South Central USA Regional Contest (Group 826)](https://solved.ac/problems/archive/group/826)** * [Division 1](https://solved.ac/problems/archive/contest/3507) * [Division 2](https://solved.ac/problems/archive/contest/3510) * **[2023 South Central USA Regional Contest (Group 1020)](https://solved.ac/problems/archive/group/1020)** * [Division 1](https://solved.ac/problems/archive/contest/4159) * [Division 2](https://solved.ac/problems/archive/contest/4160) * **[2024 South Central USA Regional Contest (Group 1157)](https://solved.ac/problems/archive/group/1157)** * [Division 1](https://solved.ac/problems/archive/contest/4675) * [Division 2](https://solved.ac/problems/archive/contest/4676) * **[2025 South Central USA Regional Contest (Group 1160)](https://solved.ac/problems/archive/group/1160)** * [Division 1](https://solved.ac/problems/archive/contest/4681) * [Division 2](https://solved.ac/problems/archive/contest/4682) * [2011 South Central USA Regional Programming Contest](https://solved.ac/problems/archive/contest/169) * [2009 South Central USA Regional Programming Contest](https://solved.ac/problems/archive/contest/170) * [2008 South Central USA Regional Programming Contest](https://solved.ac/problems/archive/contest/171) * [2007 South Central USA Regional Programming Contest](https://solved.ac/problems/archive/contest/172) * [2006 South Central USA Regional Programming Contest](https://solved.ac/problems/archive/contest/173) * [2005 South Central USA Regional Programming Contest](https://solved.ac/problems/archive/contest/174) * [2004 South Central USA Regional Programming Contest](https://solved.ac/problems/archive/contest/175) * [1998 South Central USA Regional Programming Contest](https://solved.ac/problems/archive/contest/738) * [1997 South Central USA Regional Programming Contest](https://solved.ac/problems/archive/contest/739) * [1996 South Central USA Regional Programming Contest](https://solved.ac/problems/archive/contest/740) * [1995 South Central USA Regional Programming Contest](https://solved.ac/problems/archive/contest/741) * [2013 South Central USA Regional Programming Contest](https://solved.ac/problems/archive/contest/1166) * [2003 South Central USA Regional Programming Contest](https://solved.ac/problems/archive/contest/1233) * [2002 South Central USA Regional Programming Contest](https://solved.ac/problems/archive/contest/1234) * [2001 South Central USA Regional Programming Contest](https://solved.ac/problems/archive/contest/1235) * [2015 South Central USA Regional Programming Contest](https://solved.ac/problems/archive/contest/1415) * [2020 South Central USA Regional Contest](https://solved.ac/problems/archive/contest/2463) * [2014 South Central USA Regional Programming Contest](https://solved.ac/problems/archive/contest/2616) * [1999 South Central USA Regional Programming Contest](https://solved.ac/problems/archive/contest/2711) * [2012 South Central USA Regional Programming Contest](https://solved.ac/problems/archive/contest/4078) * [2016 South Central USA Regional Programming Contest](https://solved.ac/problems/archive/contest/4080) * [2017 South Central USA Regional Programming Contest](https://solved.ac/problems/archive/contest/4081) * [2018 ICPC South Central USA Regional Programming Contest](https://solved.ac/problems/archive/contest/4082) * **[Southeast USA Regional (Group 40)](https://solved.ac/problems/archive/group/40)** * **[2012 Southeast USA Regional Programming Contest (Group 817)](https://solved.ac/problems/archive/group/817)** * [Division 1](https://solved.ac/problems/archive/contest/176) * [Division 2](https://solved.ac/problems/archive/contest/1760) * **[2013 Southeast USA Regional Programming Contest (Group 818)](https://solved.ac/problems/archive/group/818)** * [Division 1](https://solved.ac/problems/archive/contest/1171) * [Division 2](https://solved.ac/problems/archive/contest/1172) * **[2014 Southeast USA Regional Programming Contest (Group 819)](https://solved.ac/problems/archive/group/819)** * [Division 1](https://solved.ac/problems/archive/contest/1388) * [Division 2](https://solved.ac/problems/archive/contest/1389) * **[2015 Southeast USA Regional Programming Contest (Group 820)](https://solved.ac/problems/archive/group/820)** * [Division 1](https://solved.ac/problems/archive/contest/1429) * [Division 2](https://solved.ac/problems/archive/contest/1430) * **[2016 Southeast USA Regional Programming Contest (Group 821)](https://solved.ac/problems/archive/group/821)** * [Division 1](https://solved.ac/problems/archive/contest/1559) * [Division 2](https://solved.ac/problems/archive/contest/1560) * **[2017 Southeast USA Regional Programming Contest (Group 822)](https://solved.ac/problems/archive/group/822)** * [Division 1](https://solved.ac/problems/archive/contest/1793) * [Division 2](https://solved.ac/problems/archive/contest/1794) * **[2018 Southeast USA Regional Programming Contest (Group 823)](https://solved.ac/problems/archive/group/823)** * [Division 1](https://solved.ac/problems/archive/contest/1947) * [Division 2](https://solved.ac/problems/archive/contest/1948) * **[2019 Southeast USA Regional Programming Contest (Group 824)](https://solved.ac/problems/archive/group/824)** * [Division 1](https://solved.ac/problems/archive/contest/2113) * [Division 2](https://solved.ac/problems/archive/contest/2114) * **[2021 Southeast USA Regional Programming Contest (Group 830)](https://solved.ac/problems/archive/group/830)** * [Division 1](https://solved.ac/problems/archive/contest/3522) * [Division 2](https://solved.ac/problems/archive/contest/3523) * **[2022 Southeast USA Regional Programming Contest (Group 827)](https://solved.ac/problems/archive/group/827)** * [Division 1](https://solved.ac/problems/archive/contest/3508) * [Division 2](https://solved.ac/problems/archive/contest/3511) * **[2023 Southeast USA Regional Programming Contest (Group 1022)](https://solved.ac/problems/archive/group/1022)** * [Division 1](https://solved.ac/problems/archive/contest/4163) * [Division 2](https://solved.ac/problems/archive/contest/4164) * **[2024 Southeast USA Regional Programming Contest (Group 1067)](https://solved.ac/problems/archive/group/1067)** * [Division 1](https://solved.ac/problems/archive/contest/4349) * [Division 2](https://solved.ac/problems/archive/contest/4350) * **[2025 Southeast USA Regional Programming Contest (Group 1159)](https://solved.ac/problems/archive/group/1159)** * [Division 1](https://solved.ac/problems/archive/contest/4679) * [Division 2](https://solved.ac/problems/archive/contest/4680) * [2011 Southeast USA Regional Programming Contest](https://solved.ac/problems/archive/contest/177) * [2010 Southeast USA Regional Programming Contest](https://solved.ac/problems/archive/contest/178) * [2009 Southeast USA Regional Programming Contest](https://solved.ac/problems/archive/contest/179) * [2008 Southeast USA Regional Programming Contest](https://solved.ac/problems/archive/contest/180) * [2020 Southeast USA Regional Programming Contest](https://solved.ac/problems/archive/contest/2455) * [1999 Southeast USA Regional Programming Contest](https://solved.ac/problems/archive/contest/2717) * **[Southern California Regional (Group 169)](https://solved.ac/problems/archive/group/169)** * [1989 Southern California Regional](https://solved.ac/problems/archive/contest/737) * [2020 Southern California Regional](https://solved.ac/problems/archive/contest/2458) * [2018 Southern California Regional](https://solved.ac/problems/archive/contest/4248) * **[Northern Eurasia (Group 462)](https://solved.ac/problems/archive/group/462)** * **[Far Eastern Russia Regional Contest (Group 463)](https://solved.ac/problems/archive/group/463)** * [NEERC Far-Eastern Subregional 2005](https://solved.ac/problems/archive/contest/945) * [NEERC Far-Eastern Subregional 2004](https://solved.ac/problems/archive/contest/946) * [NEERC Far-Eastern Subregional 2003](https://solved.ac/problems/archive/contest/947) * [NEERC Far-Eastern Subregional 2002](https://solved.ac/problems/archive/contest/948) * [NEERC Far-Eastern Subregional 2000](https://solved.ac/problems/archive/contest/949) * **[Northern Eurasia Finals (Group 11)](https://solved.ac/problems/archive/group/11)** * [NEERC 2012](https://solved.ac/problems/archive/contest/14) * [NEERC 2011](https://solved.ac/problems/archive/contest/15) * [NEERC 2010](https://solved.ac/problems/archive/contest/16) * [NEERC 2009](https://solved.ac/problems/archive/contest/17) * [NEERC 2008](https://solved.ac/problems/archive/contest/18) * [NEERC 2007](https://solved.ac/problems/archive/contest/19) * [NEERC 2006](https://solved.ac/problems/archive/contest/20) * [NEERC 2005](https://solved.ac/problems/archive/contest/21) * [NEERC 2004](https://solved.ac/problems/archive/contest/889) * [NEERC 2003](https://solved.ac/problems/archive/contest/890) * [NEERC 2002](https://solved.ac/problems/archive/contest/891) * [NEERC 2001](https://solved.ac/problems/archive/contest/892) * [NEERC 2000](https://solved.ac/problems/archive/contest/893) * [NEERC 1999](https://solved.ac/problems/archive/contest/894) * [NEERC 1998](https://solved.ac/problems/archive/contest/895) * [NEERC 2013](https://solved.ac/problems/archive/contest/1183) * [NEERC 2014](https://solved.ac/problems/archive/contest/1320) * [NEERC 2015](https://solved.ac/problems/archive/contest/1439) * [NEERC 2016](https://solved.ac/problems/archive/contest/1585) * [NEERC 2017](https://solved.ac/problems/archive/contest/1812) * [NERC 2018](https://solved.ac/problems/archive/contest/1972) * [Northern Eurasia Finals 2019](https://solved.ac/problems/archive/contest/2241) * [Northern Eurasia Finals 2020 (Online)](https://solved.ac/problems/archive/contest/2397) * [Northern Eurasia Finals 2020 (Offline)](https://solved.ac/problems/archive/contest/2575) * [Northern Eurasia Finals 2021](https://solved.ac/problems/archive/contest/3141) * [Northern Eurasia Finals 2022](https://solved.ac/problems/archive/contest/3261) * [Northern Eurasia Finals 2023](https://solved.ac/problems/archive/contest/4372) * [Northern Eurasia Finals 2024](https://solved.ac/problems/archive/contest/4373) * [Northern Eurasia Finals 2025](https://solved.ac/problems/archive/contest/4633) * **[Northwestern Russia Regional Contest (Group 14)](https://solved.ac/problems/archive/group/14)** * [NEERC Northern Subregional 2011](https://solved.ac/problems/archive/contest/42) * [NEERC Northern Subregional 2010](https://solved.ac/problems/archive/contest/43) * [NEERC Northern Subregional 2009](https://solved.ac/problems/archive/contest/44) * [NEERC Northern Subregional 2008](https://solved.ac/problems/archive/contest/45) * [NEERC Northern Subregional 2007](https://solved.ac/problems/archive/contest/46) * [NEERC Northern Subregional 2006](https://solved.ac/problems/archive/contest/47) * [NEERC Northern Subregional 2005](https://solved.ac/problems/archive/contest/48) * [NEERC Northern Subregional 2004](https://solved.ac/problems/archive/contest/897) * [NEERC Northern Subregional 2003](https://solved.ac/problems/archive/contest/898) * [NEERC Western Subregional 2005](https://solved.ac/problems/archive/contest/936) * [NEERC Northern Subregional 2012](https://solved.ac/problems/archive/contest/937) * [NEERC Northern Subregional 2013](https://solved.ac/problems/archive/contest/1168) * [NEERC Northern Subregional 2002](https://solved.ac/problems/archive/contest/1204) * [NEERC Northern Subregional 2014](https://solved.ac/problems/archive/contest/1295) * [NEERC Northern Subregional 2015](https://solved.ac/problems/archive/contest/1411) * [NEERC Northern Subregional 2016](https://solved.ac/problems/archive/contest/1536) * [NEERC Northern Subregional 2017](https://solved.ac/problems/archive/contest/1795) * [NEERC Northern Subregional 2018](https://solved.ac/problems/archive/contest/1970) * [ICPC 2019-2020 North-Western Russia Regional Contest](https://solved.ac/problems/archive/contest/2120) * [ICPC 2019-2020 North-Western Russia Qualification](https://solved.ac/problems/archive/contest/2125) * [ICPC 2020-2021 North-Western Russia Regional Contest](https://solved.ac/problems/archive/contest/2348) * [ICPC 2021-2022 North-Western Russia Qualification ](https://solved.ac/problems/archive/contest/3048) * [ICPC 2021-2022 North-Western Russia Regional Contest](https://solved.ac/problems/archive/contest/3049) * [ICPC 2022-2023 North-Western Russia Qualification](https://solved.ac/problems/archive/contest/3226) * [ICPC 2022-2023 North-Western Russia Regional Contest](https://solved.ac/problems/archive/contest/3348) * [ICPC 2023-2024 Northwestern Russia Qualification](https://solved.ac/problems/archive/contest/4023) * [ICPC 2023-2024 Northwestern Russia Regional Contest](https://solved.ac/problems/archive/contest/4024) * [ICPC 2024-2025 Northwestern Russia Qualification](https://solved.ac/problems/archive/contest/4358) * [ICPC 2024-2025 Northwestern Russia Regional Contest](https://solved.ac/problems/archive/contest/4361) * [ICPC 2025-2026 Northwestern Russia Qualification](https://solved.ac/problems/archive/contest/4630) * [ICPC 2025-2026 Northwestern Russia Regional Contest](https://solved.ac/problems/archive/contest/4631) * **[South Pacific (Group 92)](https://solved.ac/problems/archive/group/92)** * **[South Pacific Region (Group 104)](https://solved.ac/problems/archive/group/104)** * **[ACM ICPC South Pacific Divisionals (Group 407)](https://solved.ac/problems/archive/group/407)** * [2017 South Pacific Divisional Contest](https://solved.ac/problems/archive/contest/1796) * [2016 South Pacific Divisional Contest](https://solved.ac/problems/archive/contest/1797) * **[ACM South Pacific Central Division (Group 325)](https://solved.ac/problems/archive/group/325)** * [ACM South Pacific Central Division 2015](https://solved.ac/problems/archive/contest/1371) * **[ACM South Pacific Eastern Division (Group 324)](https://solved.ac/problems/archive/group/324)** * [ACM South Pacific Eastern Division 2015](https://solved.ac/problems/archive/contest/1370) * **[ACM South Pacific Western Division (Group 323)](https://solved.ac/problems/archive/group/323)** * [ACM South Pacific Western Division 2015](https://solved.ac/problems/archive/contest/1369) * **[Australian Programming Contest (Group 259)](https://solved.ac/problems/archive/group/259)** * [AuPC 2013](https://solved.ac/problems/archive/contest/1111) * **[New Zealand Programming Contest (Group 93)](https://solved.ac/problems/archive/group/93)** * [NZPC 2012](https://solved.ac/problems/archive/contest/445) * [NZPC 2011](https://solved.ac/problems/archive/contest/446) * [NZPC 2010](https://solved.ac/problems/archive/contest/447) * [NZPC 2009](https://solved.ac/problems/archive/contest/913) * [NZPC 2008](https://solved.ac/problems/archive/contest/914) * [NZPC 2006](https://solved.ac/problems/archive/contest/1142) * [NZPC 2005](https://solved.ac/problems/archive/contest/1143) * [NZPC 2004](https://solved.ac/problems/archive/contest/1144) * [NZPC 2002](https://solved.ac/problems/archive/contest/1145) * [NZPC 2007](https://solved.ac/problems/archive/contest/1232) * [NZPC 2015](https://solved.ac/problems/archive/contest/1395) * [NZPC 2016](https://solved.ac/problems/archive/contest/1562) * [NZPC 2017](https://solved.ac/problems/archive/contest/1799) * [2012 ACM South Pacific Programming Contest](https://solved.ac/problems/archive/contest/575) * [2011 ACM South Pacific Programming Contest](https://solved.ac/problems/archive/contest/720) * [1993 ACM South Pacific Programming Contest](https://solved.ac/problems/archive/contest/729) * [1992 ACM South Pacific Programming Contest](https://solved.ac/problems/archive/contest/730) * [1991 ACM South Pacific Programming Contest](https://solved.ac/problems/archive/contest/731) * [2015 ACM South Pacific Programming Contest](https://solved.ac/problems/archive/contest/1561) * [2016 ACM South Pacific Programming Contest](https://solved.ac/problems/archive/contest/1798) * [2017 ACM South Pacific Programming Contest](https://solved.ac/problems/archive/contest/1912) * [2018 ACM South Pacific Programming Contest](https://solved.ac/problems/archive/contest/1968) * [2019 ICPC South Pacific Regionals](https://solved.ac/problems/archive/contest/2204) * [2006 ACM South Pacific Programming Contest](https://solved.ac/problems/archive/contest/2707) * [2004 ACM South Pacific Programming Contest](https://solved.ac/problems/archive/contest/2712) * [2001 ACM South Pacific Programming Contest](https://solved.ac/problems/archive/contest/2718) * **[World Finals (Group 4)](https://solved.ac/problems/archive/group/4)** * **[World Finals Dress Rehearsal (Group 605)](https://solved.ac/problems/archive/group/605)** * [ACM-ICPC World Finals Dress Rehearsal 2012](https://solved.ac/problems/archive/contest/2806) * [ACM-ICPC World Finals Dress Rehearsal 2010](https://solved.ac/problems/archive/contest/2807) * [ACM-ICPC World Finals Dress Rehearsal 2009](https://solved.ac/problems/archive/contest/2809) * [ACM-ICPC World Finals 2012](https://solved.ac/problems/archive/contest/1) * [ACM-ICPC World Finals 2011](https://solved.ac/problems/archive/contest/2) * [ACM-ICPC World Finals 2013](https://solved.ac/problems/archive/contest/1059) * [ACM-ICPC World Finals 2014](https://solved.ac/problems/archive/contest/1250) * [ACM-ICPC World Finals 2015](https://solved.ac/problems/archive/contest/1347) * [ACM-ICPC World Finals 2016](https://solved.ac/problems/archive/contest/1490) * [ACM-ICPC World Finals 2017](https://solved.ac/problems/archive/contest/1747) * [ACM-ICPC World Finals 2018](https://solved.ac/problems/archive/contest/1859) * [ICPC World Finals 2019](https://solved.ac/problems/archive/contest/2021) * [ACM-ICPC World Finals 2010](https://solved.ac/problems/archive/contest/2057) * [ACM-ICPC World Finals 2004](https://solved.ac/problems/archive/contest/2728) * [ICPC World Finals 2020](https://solved.ac/problems/archive/contest/2805) * [ACM-ICPC World Finals 2009](https://solved.ac/problems/archive/contest/2808) * [ACM-ICPC World Finals 2002](https://solved.ac/problems/archive/contest/2817) * [ICPC World Finals 2021](https://solved.ac/problems/archive/contest/3230) * [ICPC World Finals 2022](https://solved.ac/problems/archive/contest/4210) * [ICPC World Finals 2023](https://solved.ac/problems/archive/contest/4211) * [ICPC World Finals 2024](https://solved.ac/problems/archive/contest/4292) * [ICPC World Finals 2025](https://solved.ac/problems/archive/contest/4567) * **[North American Invitational Programming Contest (Group 90)](https://solved.ac/problems/archive/group/90)** * [UCIPC 2012](https://solved.ac/problems/archive/contest/428) * [UCIPC 2013](https://solved.ac/problems/archive/contest/854) * [NAIPC 2014](https://solved.ac/problems/archive/contest/1282) * [NAIPC 2015](https://solved.ac/problems/archive/contest/1387) * [NAIPC 2016](https://solved.ac/problems/archive/contest/1502) * [NAIPC 2017](https://solved.ac/problems/archive/contest/1733) * [NAIPC 2018](https://solved.ac/problems/archive/contest/1906) * [NAIPC 2019](https://solved.ac/problems/archive/contest/2003)