| #12301 | TakeoverPetrozavodsk Winter 2019 Day 4 | |
| #12302 | Unfair Card DeckPetrozavodsk Winter 2019 Day 4 | |
| #12303 | Diverse SingingPetrozavodsk Winter 2019 Day 4 | |
| #12304 | Pick Your Own NimPetrozavodsk Winter 2019 Day 4 | |
| #12305 | PermutasinoPetrozavodsk Winter 2019 Day 4 | |
| #12306 | Planar Max CutPetrozavodsk Winter 2019 Day 4 | |
| #12307 | Battle RoyalePetrozavodsk Winter 2019 Day 4 | |
| #12308 | JeopardyPetrozavodsk Winter 2019 Day 4 | |
| #12309 | SlippersPetrozavodsk Winter 2019 Day 4 | |
| #12310 | The Good, the Bad and the UglyPetrozavodsk Winter 2019 Day 4 | |
| #12311 | One GoalPetrozavodsk Winter 2019 Day 5 | |
| #12312 | Two TeamsPetrozavodsk Winter 2019 Day 5 | |
| #12313 | Three IndicesPetrozavodsk Winter 2019 Day 5 | |
| #12314 | Four ElementsPetrozavodsk Winter 2019 Day 5 | |
| #12315 | Five PointsPetrozavodsk Winter 2019 Day 5 | |
| #12316 | Six WordsPetrozavodsk Winter 2019 Day 5 | |
| #12317 | Seven NeversPetrozavodsk Winter 2019 Day 5 | |
| #12318 | Eight SinsPetrozavodsk Winter 2019 Day 5Interactive | |
| #12319 | Nine JudgesPetrozavodsk Winter 2019 Day 5 | |
| #12320 | Ten RangesPetrozavodsk Winter 2019 Day 5 | |
| #12321 | Eleven ProblemsPetrozavodsk Winter 2019 Day 5 | |
| #12322 | Alien InvasionPetrozavodsk Winter 2019 Day 6Interactive | |
| #12323 | Bus StopPetrozavodsk Winter 2019 Day 6 | |
| #12324 | Calculating AveragePetrozavodsk Winter 2019 Day 6 | |
| #12325 | Data Structure ProblemPetrozavodsk Winter 2019 Day 6 | |
| #12326 | Expected CostPetrozavodsk Winter 2019 Day 6 | |
| #12327 | Fractional XOR MaximizationPetrozavodsk Winter 2019 Day 6 | |
| #12328 | Go WestPetrozavodsk Winter 2019 Day 6 | |
| #12329 | Humongous StringPetrozavodsk Winter 2019 Day 6 | |
| #12330 | Intellectual Prefix MaximaPetrozavodsk Winter 2019 Day 6 | |
| #12331 | Jimp NumbersPetrozavodsk Winter 2019 Day 6 | |
| #12332 | K-TrianglesPetrozavodsk Winter 2019 Day 6 | |
| #12333 | Long GamePetrozavodsk Winter 2019 Day 6 | |
| #12334 | Tritwise MexPetrozavodsk Winter 2019 Day 7 | |
| #12335 | Associativity DegreePetrozavodsk Winter 2019 Day 7 | |
| #12336 | Medium Hadron ColliderPetrozavodsk Winter 2019 Day 7Interactive | |
| #12337 | Basis ChangePetrozavodsk Winter 2019 Day 7 | |
| #12338 | Scored NimPetrozavodsk Winter 2019 Day 7 | |
| #12339 | Milliarium AureumPetrozavodsk Winter 2019 Day 7 | |
| #12340 | PermutantPetrozavodsk Winter 2019 Day 7 | |
| #12341 | Game Of ChancePetrozavodsk Winter 2019 Day 7 | |
| #12342 | Incomparable PairsPetrozavodsk Winter 2019 Day 7 | |
| #12343 | The Zong of the ZeePetrozavodsk Winter 2019 Day 7 | |
| #12344 | Expected ValuePetrozavodsk Winter 2019 Day 7 | |
| #12345 | DIY RadarPetrozavodsk Winter 2019 Day 8Interactive | |
| #12346 | Word SquaredPetrozavodsk Winter 2019 Day 8 | |
| #12347 | QuoridorPetrozavodsk Winter 2019 Day 8 | |
| #12348 | Game XPetrozavodsk Winter 2019 Day 8 | |
| #12349 | 5-PathPetrozavodsk Winter 2019 Day 8 | |
| #12350 | NightmarePetrozavodsk Winter 2019 Day 8 | |
| #12351 | String TransformationPetrozavodsk Winter 2019 Day 8 | |
| #12352 | EmployeesPetrozavodsk Winter 2019 Day 8 | |
| #12353 | Modulo-magic squaresPetrozavodsk Winter 2019 Day 8 | |
| #12354 | Count the SequencesPetrozavodsk Winter 2019 Day 8 | |
| #12355 | AlohaPetrozavodsk Winter 2019 Day 9 | |
| #12356 | OrigamiPetrozavodsk Winter 2019 Day 9 | |
| #12357 | Continued StoryPetrozavodsk Winter 2019 Day 9 | |
| #12358 | The Easiest OnePetrozavodsk Winter 2019 Day 9 | |
| #12359 | SetPetrozavodsk Winter 2019 Day 9 | |
| #12360 | Old ProblemPetrozavodsk Winter 2019 Day 9 | |
| #12361 | Periodic PalindromePetrozavodsk Winter 2019 Day 9 | |
| #12362 | Accel WorldPetrozavodsk Winter 2019 Day 9 | |
| #12363 | Hello, Hello, and HelloPetrozavodsk Winter 2019 Day 9 | |
| #12364 | Sortable Path on TreePetrozavodsk Winter 2019 Day 9 | |
| #12365 | We are watching you!FJCPC 2025 | |
| #12366 | XCPCFJCPC 2025 | |
| #12367 | 中位数FJCPC 2025 | |
| #12368 | 二叉树FJCPC 2025 | |
| #12369 | 卡牌游戏FJCPC 2025 | |
| #12370 | 帕累托前沿FJCPC 2025 | |
| #12371 | 炒股高手FJCPC 2025 | |
| #12372 | 难以控制的滑板火箭FJCPC 2025 | |
| #12373 | 割点FJCPC 2025 | |
| #12374 | 构造大师贝贝FJCPC 2025 | |
| #12375 | VERTeXFJCPC 2025 | |
| #12376 | 众数FJCPC 2025 | |
| #12377 | 致谢FJCPC 2025 | |
| #12378 | 天天爱射击THUPC 2017 | |
| #12379 | 机场THUPC 2017 | |
| #12380 | 体育成绩统计THUPC 2017 | |
| #12381 | 玩游戏THUPC 2017 | |
| #12382 | 母亲节的礼物THUPC 2017 | |
| #12383 | 气氛THUPC 2017 | |
| #12384 | 组合数问题THUPC 2017 | |
| #12385 | 小 L 的计算题THUPC 2017 | |
| #12386 | 钦妹的玩具商店THUPC 2017 | |
| #12387 | 老司机THUPC 2017 | |
| #12388 | Sorcerers of the Round TableXXII Olimpiada Informatyczna – I etapPOI 2014 Stage 1 | |
| #12389 | Movie-goerXXII Olimpiada Informatyczna – I etapPOI 2014 Stage 1 | |
| #12390 | SquaresXXII Olimpiada Informatyczna – I etapPOI 2014 Stage 1 | |
| #12391 | GluttonsXXII Olimpiada Informatyczna – I etapPOI 2014 Stage 1 | |
| #12392 | SealXXII Olimpiada Informatyczna – I etapPOI 2014 Stage 1 | |
| #12393 | LogisticsXXII Olimpiada Informatyczna – II etapPOI 2014 Stage 2 | |
| #12394 | Necklace partitionXXII Olimpiada Informatyczna – II etapPOI 2014 Stage 2 | |
| #12395 | DesertXXII Olimpiada Informatyczna – II etapPOI 2014 Stage 2 | |
| #12396 | Speed reading courseXXII Olimpiada Informatyczna – II etapPOI 2014 Stage 2 | |
| #12397 | Three towersXXII Olimpiada Informatyczna – II etapPOI 2014 Stage 2 | |
| #12398 | Matrix EquationJinan Regional 2020 | |
| #12399 | Number GameJinan Regional 2020 | |
| #12400 | Stone GameJinan Regional 2020 | |