| #6401 | Classic: N Real DNA PotsUniversal Cup | |
| #6402 | MEXimum Spanning TreeUniversal Cup | |
| #6403 | Master of PolygonUniversal Cup | |
| #6404 | Shuttle TourUniversal Cup | |
| #6405 | BarkleyUniversal Cup | |
| #6406 | Stage ClearUniversal Cup | |
| #6407 | Classical A+B ProblemPetrozavodsk Winter 2023 Day 7 | |
| #6408 | Classical Counting ProblemPetrozavodsk Winter 2023 Day 7 | |
| #6409 | Classical Data Structure ProblemPetrozavodsk Winter 2023 Day 7 | |
| #6410 | Classical DP ProblemPetrozavodsk Winter 2023 Day 7 | |
| #6411 | Classical FFT ProblemPetrozavodsk Winter 2023 Day 7 | |
| #6412 | Classical Geometry ProblemPetrozavodsk Winter 2023 Day 7 | |
| #6413 | Classical Graph Theory ProblemPetrozavodsk Winter 2023 Day 7 | |
| #6414 | Classical Maximization ProblemPetrozavodsk Winter 2023 Day 7 | |
| #6415 | Classical Minimization ProblemPetrozavodsk Winter 2023 Day 7 | |
| #6416 | Classical Scheduling ProblemPetrozavodsk Winter 2023 Day 7 | |
| #6417 | Classical Summation ProblemPetrozavodsk Winter 2023 Day 7 | |
| #6418 | Ah, It's Yesterday Once MoreNanjing Regional 2020 | |
| #6419 | Baby's First Suffix Array ProblemNanjing Regional 2020 | |
| #6420 | Certain Scientific RailgunNanjing Regional 2020 | |
| #6421 | Degree of Spanning TreeNanjing Regional 2020 | |
| #6422 | Evil CoordinateNanjing Regional 2020 | |
| #6423 | FireworksNanjing Regional 2020 | |
| #6424 | GoNanjing Regional 2020 | |
| #6425 | Harmonious RectangleNanjing Regional 2020 | |
| #6426 | Interested in SkiingNanjing Regional 2020 | |
| #6427 | Just Another Game of StonesNanjing Regional 2020 | |
| #6428 | K Co-prime PermutationNanjing Regional 2020 | |
| #6429 | Let's Play CurlingNanjing Regional 2020 | |
| #6430 | Monster HunterNanjing Regional 2020 | |
| #6431 | Oops, It's Yesterday Twice MoreNanjing Regional 2021 | |
| #6432 | Puzzle in InazumaNanjing Regional 2021 | |
| #6433 | Klee in Solitary ConfinementNanjing Regional 2021 | |
| #6434 | Paimon SortingNanjing Regional 2021 | |
| #6435 | Paimon Segment TreeNanjing Regional 2021 | |
| #6436 | Paimon PolygonNanjing Regional 2021 | |
| #6437 | Paimon's TreeNanjing Regional 2021 | |
| #6438 | CrystalflyNanjing Regional 2021 | |
| #6439 | Cloud Retainer's GameNanjing Regional 2021 | |
| #6440 | Xingqiu's JokeNanjing Regional 2021 | |
| #6441 | Ancient Magic Circle in TeyvatNanjing Regional 2021 | |
| #6442 | Secret of Tianqiu ValleyNanjing Regional 2021 | |
| #6443 | Windblume FestivalNanjing Regional 2021 | |
| #6444 | Pieces of ParenthesesNAIPC 2017Moscow Pre-Finals Workshops 2017 Day 6 | |
| #6445 | Stars in a CanNAIPC 2017Moscow Pre-Finals Workshops 2017 Day 6 | |
| #6446 | Stretching StreamersNAIPC 2017Moscow Pre-Finals Workshops 2017 Day 6 | |
| #6447 | Heaps from TreesNAIPC 2017Moscow Pre-Finals Workshops 2017 Day 6 | |
| #6448 | Blazing New TrailsNAIPC 2017Moscow Pre-Finals Workshops 2017 Day 6 | |
| #6449 | Incremental Double Free StringsNAIPC 2017Moscow Pre-Finals Workshops 2017 Day 6 | |
| #6450 | Apple MarketNAIPC 2017Moscow Pre-Finals Workshops 2017 Day 6 | |
| #6451 | Maximum Color CliqueNAIPC 2017Moscow Pre-Finals Workshops 2017 Day 6 | |
| #6452 | Ski ResortNAIPC 2017Moscow Pre-Finals Workshops 2017 Day 6 | |
| #6453 | Yin and Yang StonesNAIPC 2017Moscow Pre-Finals Workshops 2017 Day 6 | |
| #6454 | Unbalanced ParenthesesNAIPC 2017Moscow Pre-Finals Workshops 2017 Day 6 | |
| #6455 | Fancy AntiquesNAIPC 2016 | |
| #6456 | Alternative Bracket NotationNAIPC 2016 | |
| #6457 | Greetings!NAIPC 2016 | |
| #6458 | Programming TeamNAIPC 2016 | |
| #6459 | K-InversionsNAIPC 2016 | |
| #6460 | Mountain ScenesNAIPC 2016 | |
| #6461 | SymmetryNAIPC 2016 | |
| #6462 | Jewel ThiefNAIPC 2016 | |
| #6463 | TouristsNAIPC 2016 | |
| #6464 | WhiteboardNAIPC 2016 | |
| #6465 | YATPNAIPC 2016 | |
| #6466 | ConcertsSEERC 2017 | |
| #6467 | BricksSEERC 2017 | |
| #6468 | Christmas TreeSEERC 2017 | |
| #6469 | Harry Potter and The Vector SpellSEERC 2017 | |
| #6470 | Looping PlaylistSEERC 2017 | |
| #6471 | Binary TransformationsSEERC 2017 | |
| #6472 | RobotsSEERC 2017 | |
| #6473 | Cat and MouseSEERC 2017 | |
| #6474 | TetrisSEERC 2017 | |
| #6475 | Cunning FriendsSEERC 2017 | |
| #6476 | Escape RoomSEERC 2017 | |
| #6477 | Divide and ConquerSEERC 2017 | |
| #6484 | Beautiful AutomataSt. Petersburg State University Championship | |