| #14401 | Add Them All!Petrozavodsk Summer 2025 Day 1 | |
| #14402 | Brackets and Reverse StringPetrozavodsk Summer 2025 Day 1 | |
| #14403 | Custom BanknotesPetrozavodsk Summer 2025 Day 1 | |
| #14404 | Deal With SequencePetrozavodsk Summer 2025 Day 1 | |
| #14405 | Expression GenerationPetrozavodsk Summer 2025 Day 1 | |
| #14406 | FlipsPetrozavodsk Summer 2025 Day 1 | |
| #14407 | Generate The TrianglesPetrozavodsk Summer 2025 Day 1 | |
| #14408 | Half-Planes ColoringPetrozavodsk Summer 2025 Day 1 | |
| #14409 | Integers On EdgesPetrozavodsk Summer 2025 Day 1 | |
| #14410 | Jungle and PyramidPetrozavodsk Summer 2025 Day 1 | |
| #14411 | King, Joker, and DivisibilityPetrozavodsk Summer 2025 Day 1 | |
| #14412 | Let's Measure PermutationsPetrozavodsk Summer 2025 Day 1 | |
| #14413 | Magenta and Cyan IntegersPetrozavodsk Summer 2025 Day 1 | |
| #14414 | Nice SubsequencesPetrozavodsk Summer 2025 Day 1 | |
| #14415 | Two Spanning TreesPetrozavodsk Summer 2025 Day 4 | |
| #14416 | Christmas TreePetrozavodsk Summer 2025 Day 4 | |
| #14417 | Roman NumeralsPetrozavodsk Summer 2025 Day 4 | |
| #14418 | Disjoint Set SplittingPetrozavodsk Summer 2025 Day 4 | |
| #14419 | Maximum Segment SumPetrozavodsk Summer 2025 Day 4 | |
| #14420 | This Time I Will Be LuckyPetrozavodsk Summer 2025 Day 4 | |
| #14421 | Far AwayPetrozavodsk Summer 2025 Day 4 | |
| #14422 | Absolutely FlatPetrozavodsk Summer 2025 Day 4 | |
| #14423 | Two PermutationsPetrozavodsk Summer 2025 Day 4 | |
| #14424 | One PermutationPetrozavodsk Summer 2025 Day 4 | |
| #14425 | Game on BoardPetrozavodsk Summer 2025 Day 4 | |
| #14426 | Grid Problem | |
| #14427 | Domain Compression | |
| #14428 | Staple Stable | |
| #14429 | Sequence Is Not Subsequence | |
| #14430 | Coffee Shops | |
| #14431 | Yet Another MST Problem | |
| #14432 | Cyclic Topsort | |
| #14433 | Misread Problem | |
| #14434 | troS XEM | |
| #14435 | Yet Another Constructive Problem | |
| #14436 | Robot Construction | |
| #14437 | Art InstallationNAQ 2025 | |
| #14438 | Backup TowersNAQ 2025 | |
| #14439 | Call for Problems, Round 2NAQ 2025 | |
| #14440 | Carl's Maze-Solving AlgorithmNAQ 2025 | |
| #14441 | CurlingNAQ 2025 | |
| #14442 | Figure Skating JudgingNAQ 2025 | |
| #14443 | MingleNAQ 2025 | |
| #14444 | SeesawNAQ 2025 | |
| #14445 | Star GuardiansNAQ 2025 | |
| #14446 | Ten Player BingoNAQ 2025 | |
| #14447 | Treasure HuntInteractiveNAQ 2025 | |
| #14448 | Triple JumpNAQ 2025 | |
| #14449 | Utopia RelationshipsNAQ 2025 | |
| #14450 | 环状线 | |
| #14451 | 爬山 | |
| #14452 | 短视频 | |
| #14453 | 网络改造 | |
| #14454 | 购物计划 | |
| #14455 | 丝之歌 | |
| #14456 | 最大公约数 | |
| #14457 | 缺陷解码器 | |
| #14458 | 调色滤镜 | |
| #14459 | 后鼻嘤 | |
| #14460 | 左儿子右兄弟 | |
| #14461 | 挑战凸多边形 | |
| #14462 | 五子连珠 | |
| #14463 | 挑战三角形 | |
| #14464 | Job SchedulingCEOI 2012 Day 1 | |
| #14465 | Printed Circuit BoardCEOI 2012 Day 1 | |
| #14466 | Sailing RaceCEOI 2012 Day 1 | |
| #14467 | Highway designCEOI 2012 Day 2Interactive | |
| #14468 | Waste RecyclingCEOI 2012 Day 2 | |
| #14469 | NetworkCEOI 2012 Day 2 | |
| #14470 | 方伯伯的玉米田SCOI 2014 Day 1 | |
| #14471 | 方伯伯的 OJ SCOI 2014 Day 1 | |
| #14472 | 方伯伯打扑克SCOI 2014 Day 1 | |
| #14473 | 方伯伯运椰子SCOI 2014 Day 2 | |
| #14474 | 方伯伯的商场之旅SCOI 2014 Day 2 | |
| #14475 | 舌尖上的方伯伯SCOI 2014 Day 2 | |
| #14476 | 比赛HBOI 2013 Day 1HNOI 2013 Day 1 | |
| #14477 | 消毒HBOI 2013 Day 1HNOI 2013 Day 1 | |
| #14478 | 旅行HBOI 2013 Day 1HNOI 2013 Day 1 | |
| #14479 | 数列HBOI 2013 Day 2HNOI 2013 Day 2 | |
| #14480 | 游走HBOI 2013 Day 2HNOI 2013 Day 2 | |
| #14481 | 切糕HBOI 2013 Day 2HNOI 2013 Day 2 | |
| #14482 | 线性代数TJOI 2015 Day 1 | |
| #14483 | 组合数学TJOI 2015 Day 1 | |
| #14484 | 弦论TJOI 2015 Day 1 | |
| #14485 | 旅游TJOI 2015 Day 2 | |
| #14486 | 棋盘TJOI 2015 Day 2 | |
| #14487 | 概率论TJOI 2015 Day 2 | |