| #9301 | Skeleton DynamizationCCPC Weihai 2020 | |
| #9302 | Caesar CipherCCPC Weihai 2020 | |
| #9303 | Message BombCCPC Weihai 2020 | |
| #9304 | Sean the CuberCCPC Weihai 2020 | |
| #9305 | Steins;GameCCPC Weihai 2020 | |
| #9306 | Tree TweakingCCPC Weihai 2020 | |
| #9307 | Clock MasterCCPC Weihai 2020 | |
| #9308 | World Cup | |
| #9309 | Graph | |
| #9310 | Permutation Counting 4 | |
| #9311 | Protection War | |
| #9312 | Random Dungeon | |
| #9313 | Make Max | |
| #9314 | The Median of the Median of the Median | |
| #9315 | Rainbow Bracket Sequence | |
| #9316 | Boxes | |
| #9317 | Rivals | |
| #9318 | AC Automation Chicken | |
| #9319 | Bull Farm | |
| #9320 | Find the Easiest Problem | |
| #9321 | Permutations and Cycles (Minimum Version)Petrozavodsk Summer 2023 Day 3 | |
| #9322 | Segments RemovalPetrozavodsk Summer 2023 Day 3 | |
| #9323 | Segments and SubsetsPetrozavodsk Summer 2023 Day 3 | |
| #9324 | Sum of CharacteristicsPetrozavodsk Summer 2023 Day 3 | |
| #9325 | Random PermutationPetrozavodsk Summer 2023 Day 3 | |
| #9326 | GamePetrozavodsk Summer 2023 Day 3 | |
| #9327 | Permutation and QueriesPetrozavodsk Summer 2023 Day 3 | |
| #9328 | Make a PalindromePetrozavodsk Summer 2023 Day 3 | |
| #9329 | Good SubsegmentsPetrozavodsk Summer 2023 Day 3 | |
| #9330 | Series SumPetrozavodsk Summer 2023 Day 3 | |
| #9331 | Maximize the MinimumPetrozavodsk Summer 2023 Day 3 | |
| #9332 | Permutations and Cycles (Maximum Version)Petrozavodsk Summer 2023 Day 3 | |
| #9345 | Artful Paintings | |
| #9346 | Binary Numbers | |
| #9347 | Competition in Swiss-system | |
| #9348 | Driverless Car | |
| #9349 | Exchanging Gifts | |
| #9350 | Fixing Banners | |
| #9351 | Game Store | |
| #9352 | Highway Buses | |
| #9353 | Interesting Permutation | |
| #9354 | Justifying the Conjecture | |
| #9355 | Keeping Rabbits | |
| #9356 | LRU Algorithm | |
| #9370 | Gambling on Choosing Regionals | |
| #9371 | Mountain Booking | |
| #9372 | Prefix of Suffixes | |
| #9373 | Query on Tree | |
| #9374 | Escape | |
| #9375 | Tourist | |
| #9376 | Game | |
| #9377 | Points Selection | |
| #9378 | Strange Binary | |
| #9379 | Stacking of Goods | |
| #9380 | Match | |
| #9381 | 502 Bad Gateway | |