| #1 | I/O Test | |
| #2 | BoatAPIO 2016 | |
| #3 | FireworksAPIO 2016 | |
| #4 | GapAPIO 2016Interactive | |
| #5 | 在线 O(1) 逆元Interactive | |
| #6 | 玛里苟斯清华集训 2014 Day 1CTT 2014 Day 1 | |
| #7 | 主旋律清华集训 2014 Day 1CTT 2014 Day 1 | |
| #8 | 奇数国清华集训 2014 Day 1CTT 2014 Day 1 | |
| #9 | 简单回路清华集训 2014 Day 2CTT 2014 Day 2 | |
| #10 | 卡常数清华集训 2014 Day 2CTT 2014 Day 2 | |
| #11 | 矩阵变换清华集训 2014 Day 2CTT 2014 Day 2 | |
| #12 | Sum清华集训 2014 Day 3CTT 2014 Day 3 | |
| #13 | Router清华集训 2014 Day 3CTT 2014 Day 3 | |
| #14 | Breaking Bomber清华集训 2014 Day 3CTT 2014 Day 3 | |
| #15 | 虫逢清华集训 2014 Day 4CTT 2014 Day 4 | |
| #16 | 玄学清华集训 2014 Day 4CTT 2014 Day 4 | |
| #17 | 文学清华集训 2014 Day 4CTT 2014 Day 4 | |
| #18 | Police StationCPSPC 2017 | |
| #19 | PyramidCPSPC 2017 | |
| #20 | Robot RaceCPSPC 2017 | |
| #21 | GCD-sumCPSPC 2017 | |
| #22 | Power plantsCPSPC 2017 | |
| #23 | BracketsCPSPC 2017 | |
| #24 | SkiingCPSPC 2017 | |
| #25 | CounterspellsCPSPC 2017 | |
| #26 | Jumbled passwordCPSPC 2017 | |
| #27 | The Battle for WesnothCPSPC 2017 | |
| #28 | Corporate life (after hostile takover)CPSPC 2017 | |
| #29 | Posters on the wallCPSPC 2017 | |
| #30 | Political DevelopmentBaltic OI 2017 | |
| #31 | RailwayBaltic OI 2017 | |
| #32 | TollBaltic OI 2017 | |
| #33 | Cat in a treeBaltic OI 2017 | |
| #34 | FriendsBaltic OI 2017 | |
| #35 | Plus MinusBaltic OI 2017 | |
| #39 | Love PolygonBaltic OI 2018 | |
| #40 | Martian DNABaltic OI 2018 | |
| #41 | Worm WorriesBaltic OI 2018Interactive | |
| #42 | Alternating CurrentBaltic OI 2018 | |
| #43 | GeneticsBaltic OI 2018 | |
| #44 | PathsBaltic OI 2018 | |
| #45 | Tutte多项式模板题 | |
| #46 | PiratesAIPO 2017 National Finals | |
| #47 | Password checkAIPO 2017 National Finals | |
| #48 | Paint bucketAIPO 2017 National Finals | |
| #49 | Counting pathsAIPO 2017 National Finals | |
| #50 | KnightAIPO 2017 National Finals | |
| #51 | TilingAIPO 2017 National Finals | |
| #52 | DebugAIPO 2017 National Finals | |
| #53 | Boom!AIPO 2017 National Finals | |
| #55 | 欧几里得距离之和 | |
| #56 | Nim Product模板题 | |
| #59 | Determinant of A+Bz | |
| #61 | Cut Cut Cut! | |
| #62 | ExaminationJOISC 2019 Day 1 | |
| #63 | MeetingsJOISC 2019 Day 1Interactive | |
| #64 | NaanJOISC 2019 Day 1 | |
| #65 | Two AntennasJOISC 2019 Day 2 | |
| #66 | Two DishesJOISC 2019 Day 2 | |
| #67 | Two TransportationsJOISC 2019 Day 2Communication | |
| #68 | Designated CitiesJOISC 2019 Day 3 | |
| #69 | LampsJOISC 2019 Day 3 | |
| #70 | Bitaro, who Leaps through TimeJOISC 2019 Day 3 | |
| #71 | Cake 3JOISC 2019 Day 4 | |
| #72 | MergersJOISC 2019 Day 4 | |
| #73 | MineralsJOISC 2019 Day 4Interactive | |
| #74 | Algorithm TeachingLatin American Regional 2019 | |
| #75 | Build the Perfect HouseLatin American Regional 2019 | |
| #76 | Cut Inequality DownLatin American Regional 2019 | |
| #77 | Dazzling StarsLatin American Regional 2019 | |
| #78 | Eggfruit CakeLatin American Regional 2019 | |
| #79 | Fabricating SculpturesLatin American Regional 2019 | |
| #80 | Gluing PicturesLatin American Regional 2019 | |
| #81 | Hold or Continue?Latin American Regional 2019 | |
| #82 | Improve SPAMLatin American Regional 2019 | |
| #83 | Jumping GrasshopperLatin American Regional 2019 | |
| #84 | Know your AliensLatin American Regional 2019 | |
| #85 | Leverage MDTLatin American Regional 2019 | |
| #86 | Mountain RangesLatin American Regional 2019 | |
| #87 | Devil's ShareRMI 2019 | |
| #88 | Lucky NumbersRMI 2019 | |
| #89 | Restore ArrayRMI 2019 | |
| #90 | Fishing GameRMI 2019 | |
| #91 | Secret PermutationRMI 2019Interactive | |
| #92 | Santa ClausRMI 2019 | |
| #93 | ConfusionPetrozavodsk Summer 2012 Day 1 | |
| #94 | Good Old TablePetrozavodsk Summer 2012 Day 1 | |
| #95 | RadixPetrozavodsk Summer 2012 Day 1 | |
| #96 | Random String GeneratorPetrozavodsk Summer 2012 Day 1 | |
| #97 | United States of BytelandPetrozavodsk Summer 2012 Day 1 | |
| #98 | Students' LifePetrozavodsk Summer 2012 Day 1 | |
| #99 | 3-substringsPetrozavodsk Summer 2012 Day 1 | |
| #100 | TetrahedronsPetrozavodsk Summer 2012 Day 1 | |