| #17101 | STAZACOCI 2007/2008 Contest #1 | |
| #17102 | BIJELECOCI 2007/2008 Contest #2 | |
| #17103 | CRNECOCI 2007/2008 Contest #2 | |
| #17104 | PRVACOCI 2007/2008 Contest #2 | |
| #17105 | TURBOCOCI 2007/2008 Contest #2 | |
| #17106 | KEMIJACOCI 2007/2008 Contest #2 | |
| #17107 | PRAVOKUTNICOCI 2007/2008 Contest #2 | |
| #17108 | CETIRICOCI 2007/2008 Contest #3 | |
| #17109 | OKTALNICOCI 2007/2008 Contest #3 | |
| #17110 | TAJNACOCI 2007/2008 Contest #3 | |
| #17111 | DEJAVUCOCI 2007/2008 Contest #3 | |
| #17112 | CUDAKCOCI 2007/2008 Contest #3 | |
| #17113 | REDOKSCOCI 2007/2008 Contest #3 | |
| #17114 | VAUVAUCOCI 2007/2008 Contest #4 | |
| #17115 | VECICOCI 2007/2008 Contest #4 | |
| #17116 | LEKTIRACOCI 2007/2008 Contest #4 | |
| #17117 | MUZICARICOCI 2007/2008 Contest #4 | |
| #17118 | POKLONCOCI 2007/2008 Contest #4 | |
| #17119 | KOCKECOCI 2007/2008 Contest #4 | |
| #17120 | TRICOCI 2007/2008 Contest #5 | |
| #17121 | PASCALCOCI 2007/2008 Contest #5 | |
| #17122 | JABUKECOCI 2007/2008 Contest #5 | |
| #17123 | AVOGADROCOCI 2007/2008 Contest #5 | |
| #17124 | BARICACOCI 2007/2008 Contest #5 | |
| #17125 | BAZACOCI 2007/2008 Contest #5 | |
| #17126 | PARKINGCOCI 2007/2008 Contest #6 | |
| #17127 | SEMAFORICOCI 2007/2008 Contest #6 | |
| #17128 | GRANICACOCI 2007/2008 Contest #6 | |
| #17129 | GEORGECOCI 2007/2008 Contest #6 | |
| #17130 | PRINCEZACOCI 2007/2008 Contest #6 | |
| #17131 | CESTARINECOCI 2007/2008 Contest #6 | |
| #17132 | FamilyUOI 2025 Stage III Day 1 | |
| #17133 | A+B=CUOI 2025 Stage III Day 1 | |
| #17134 | Area of the CakeUOI 2025 Stage III Day 1 | |
| #17135 | Digital GameUOI 2025 Stage III Day 1 | |
| #17136 | OldPost -- NewPostUOI 2025 Stage III Day 1 | |
| #17137 | MoviesUOI 2025 Stage III Day 2 | |
| #17138 | CatamaransUOI 2025 Stage III Day 2 | |
| #17139 | Diagonal NumbersUOI 2025 Stage III Day 2 | |
| #17140 | Odd RowsUOI 2025 Stage III Day 2 | |
| #17141 | Three QueriesUOI 2025 Stage III Day 2 | |
| #17142 | Итоги олимпиадыROI Regional 2026 Day 1 | |
| #17143 | Хромой корольROI Regional 2026 Day 1 | |
| #17144 | Расстановки фишекROI Regional 2026 Day 1 | |
| #17145 | Прыжки по вершинамROI Regional 2026 Day 1 | |
| #17146 | Покраска брускаROI Regional 2026 Day 2 | |
| #17147 | Битовая магияROI Regional 2026 Day 2 | |
| #17148 | Скользящие окнROI Regional 2026 Day 2 | |
| #17149 | XOR РаскраскаROI Regional 2026 Day 2 | |
| #17150 | Three CastlesEurope Championship 2026 | |
| #17151 | Bitwise BeachEurope Championship 2026 | |
| #17152 | Copy-pasteEurope Championship 2026 | |
| #17153 | Deque SortEurope Championship 2026 | |
| #17154 | EvaluationEurope Championship 2026 | |
| #17155 | Fix the ColoringEurope Championship 2026 | |
| #17156 | Good PermutationsEurope Championship 2026 | |
| #17157 | HouseEurope Championship 2026 | |
| #17158 | PalindromesEurope Championship 2026 | |
| #17159 | Jewel GuardsEurope Championship 2026 | |
| #17160 | Multiset VarianceEurope Championship 2026 | |
| #17161 | Anthill/Honeypot SimulatorPetrozavodsk Winter 2026 Day 6 | |
| #17162 | Missing NumberPetrozavodsk Winter 2026 Day 6 | |
| #17163 | String WorkshopPetrozavodsk Winter 2026 Day 6 | |
| #17164 | Distinguishable DistributionsPetrozavodsk Winter 2026 Day 6Interactive | |
| #17165 | Four Sages Around an Oak TreePetrozavodsk Winter 2026 Day 6Communication | |
| #17166 | Pluses and MinusesPetrozavodsk Winter 2026 Day 6 | |
| #17167 | Traffic LightsPetrozavodsk Winter 2026 Day 6 | |
| #17168 | Sweet Remainders!Petrozavodsk Winter 2026 Day 6 | |
| #17169 | Wooden CheckerPetrozavodsk Winter 2026 Day 6Interactive | |
| #17170 | Euler LinePetrozavodsk Winter 2026 Day 6 | |
| #17171 | Traversal of a Triangular GridPetrozavodsk Winter 2026 Day 6 | |
| #17172 | TrianglesPetrozavodsk Winter 2026 Day 6 | |
| #17173 | Construction CompanyPetrozavodsk Winter 2026 Day 6 | |
| #17174 | Balanced SequenceKOI TST 2026 Day 1 | |
| #17175 | Communication Network 2KOI TST 2026 Day 1 | |
| #17176 | Grid TreeKOI TST 2026 Day 1 | |
| #17177 | Wonderful Interval 2KOI TST 2026 Day 1 | |
| #17178 | 50,000 SaucesKOI TST 2026 Day 2Interactive | |
| #17179 | SortingKOI TST 2026 Day 2Interactive | |
| #17180 | Flying Squirrel 2KOI TST 2026 Day 2 | |
| #17181 | Observation TowerKOI TST 2026 Day 2 | |
| #17182 | 哈夫曼树 I北京大学 2025 年《数据结构与算法A（实验班）》期末考试 | |
| #17183 | 图上游戏北京大学 2025 年《数据结构与算法A（实验班）》期末考试 | |
| #17184 | 字符替换北京大学 2025 年《数据结构与算法A（实验班）》期末考试 | |
| #17185 | 一维城市北京大学 2025 年《数据结构与算法A（实验班）》期末考试 | |
| #17186 | 哈夫曼树 II北京大学 2025 年《数据结构与算法A（实验班）》期末考试 | |
| #17187 | Vigenère 密码NOIP 2012 Day 1 | |
| #17188 | 国王游戏NOIP 2012 Day 1 | |
| #17189 | 开车旅行NOIP 2012 Day 1 | |
| #17190 | 同余方程NOIP 2012 Day 2 | |
| #17191 | 借教室NOIP 2012 Day 2 | |
| #17192 | 疫情控制NOIP 2012 Day 2 | |