| #201 | FeastNOI 2019 Final | |
| #202 | Rigged RoadsNOI 2019 Final | |
| #203 | ShuffleNOI 2019 FinalInteractive | |
| #204 | A + BPA 2019 | |
| #205 | Muzyka pop [A]PA 2019 | |
| #206 | Wina [B]PA 2019 | |
| #207 | Desant [A]PA 2019 | |
| #208 | Herbata [B]PA 2019 | |
| #209 | Iloczyny Fibonacciego [A]PA 2019 | |
| #210 | Terytoria [B]PA 2019 | |
| #211 | Szprotki i szczupaki [B]PA 2019 | |
| #212 | Wyspa [A]PA 2019 | |
| #213 | Trzy kule [B]PA 2019 | |
| #214 | Osady i warownie 2 [B]PA 2019 | |
| #215 | Podatki drogowe [A]PA 2019 | |
| #216 | Sonda [A]PA 2019Interactive | |
| #219 | PINPA 2018 | |
| #222 | Poddrzewo [A]PA 2018 | |
| #223 | Język polski [B]PA 2018 | |
| #224 | Heros [A]PA 2018 | |
| #225 | Nowy kontrakt [B]PA 2018 | |
| #226 | Magiczne wieże [A]PA 2018 | |
| #227 | Palindrom [B]PA 2018 | |
| #232 | Ryki [A]PA 2018 | |
| #233 | Skwarki [B]PA 2018 | |
| #234 | Wielokąty [A]PA 2018 | |
| #235 | Maximum MultiplePetrozavodsk Summer 2018 Day 4 | |
| #236 | Balanced SequencePetrozavodsk Summer 2018 Day 4 | |
| #237 | Triangle PartitionPetrozavodsk Summer 2018 Day 4 | |
| #238 | Distinct ValuesPetrozavodsk Summer 2018 Day 4 | |
| #239 | Maximum Weighted MatchingPetrozavodsk Summer 2018 Day 4 | |
| #240 | Period SequencePetrozavodsk Summer 2018 Day 4 | |
| #241 | Chiaki Sequence RevisitedPetrozavodsk Summer 2018 Day 4 | |
| #242 | RMQ Similar SequencePetrozavodsk Summer 2018 Day 4 | |
| #243 | Lyndon SubstringPetrozavodsk Summer 2018 Day 4 | |
| #244 | Turn Off The LightPetrozavodsk Summer 2018 Day 4 | |
| #245 | Time ZonePetrozavodsk Summer 2018 Day 4 | |
| #246 | 通道WC 2018 | |
| #247 | 州区划分WC 2018 | |
| #248 | 即时战略WC 2018Interactive | |
| #250 | Map PuzzleSouth Central USA Regional 2014 | |
| #251 | Ancient NumeralsSouth Central USA Regional 2014 | |
| #252 | CipherSouth Central USA Regional 2014 | |
| #253 | RunnersSouth Central USA Regional 2014 | |
| #254 | Palindrome NumbersSouth Central USA Regional 2014 | |
| #255 | Factorial FactorsSouth Central USA Regional 2014 | |
| #256 | Chuck's ChallengeSouth Central USA Regional 2014 | |
| #257 | Optic CommunicationSouth Central USA Regional 2014 | |
| #258 | ResourcesSouth Central USA Regional 2014 | |
| #259 | Potemkin cycleCEOI 2015 Day 1 | |
| #260 | Calvinball championshipCEOI 2015 Day 1 | |
| #261 | PipesCEOI 2015 Day 1 | |
| #262 | Ice Hockey World ChampionshipCEOI 2015 Day 2 | |
| #263 | NucleariaCEOI 2015 Day 2 | |
| #264 | Calvinball Championship AgainCEOI 2015 Day 2 | |
| #267 | Pizza deliveryXXIV Olimpiada Informatyczna – III etapPOI 2016/2017 Stage 3 | |
| #268 | MidasXXIV Olimpiada Informatyczna – III etapPOI 2016/2017 Stage 3 | |
| #269 | GradesXXIV Olimpiada Informatyczna – III etapPOI 2016/2017 Stage 3 | |
| #270 | PaniniXXIV Olimpiada Informatyczna – III etapPOI 2016/2017 Stage 3 | |
| #271 | CookXXIV Olimpiada Informatyczna – III etapPOI 2016/2017 Stage 3Interactive | |
| #272 | Crossroads of parityXXIV Olimpiada Informatyczna – III etapPOI 2016/2017 Stage 3 | |
| #273 | 混乱度 | |
| #274 | 复读 / 复读机 | |
| #275 | PalindromesAPIO 2014 | |
| #276 | Split the sequenceAPIO 2014 | |
| #277 | Beads and wiresAPIO 2014 | |
| #278 | Senseless and MercilessPetrozavodsk Summer 2015 Day 5 | |
| #279 | MultithreadingPetrozavodsk Summer 2015 Day 5 | |
| #280 | PolynomialPetrozavodsk Summer 2015 Day 5 | |
| #281 | OpenspacesPetrozavodsk Summer 2015 Day 5 | |
| #282 | GamePetrozavodsk Summer 2015 Day 5 | |
| #283 | PasswordPetrozavodsk Summer 2015 Day 5 | |
| #284 | Random Shuffle RankingPetrozavodsk Summer 2015 Day 5 | |
| #285 | Query MatchingPetrozavodsk Summer 2015 Day 5 | |
| #292 | 酗酒者SDOI 2014 Round 2 Day 1 | |
| #293 | 名为 Threes 的游戏SDOI 2014 Round 2 Day 1Output Only | |
| #294 | 电路板SDOI 2014 Round 2 Day 1 | |
| #295 | 编码干扰SDOI 2014 Round 2 Day 2Communication | |
| #296 | 括号序列计数SDOI 2014 Round 2 Day 2 | |
| #297 | 里面还是外面SDOI 2014 Round 2 Day 2 | |
| #298 | 狗 | |
| #299 | 梨 | |
| #300 | 锅 | |