| #9101 | Zayin and BusCCPC Xiamen 2019 | |
| #9102 | Zayin and ElementsCCPC Xiamen 2019 | |
| #9103 | Zayin and FireballCCPC Xiamen 2019 | |
| #9104 | Zayin and ForestCCPC Xiamen 2019 | |
| #9105 | Zayin and CampCCPC Xiamen 2019 | |
| #9106 | Zayin and DirichletCCPC Xiamen 2019 | |
| #9107 | Zayin and CountCCPC Xiamen 2019 | |
| #9108 | Zayin and ObstaclesCCPC Xiamen 2019 | |
| #9109 | Zayin and Coin GameCCPC Xiamen 2019 | |
| #9110 | Zayin and TreeCCPC Xiamen 2019 | |
| #9111 | Zayin and StringCCPC Xiamen 2019 | |
| #9112 | Zayin and RaffleCCPC Xiamen 2019 | |
| #9113 | Again Make UTPC | |
| #9114 | Black or White 2 | |
| #9115 | Contour Multiplication | |
| #9116 | DRD String | |
| #9117 | Equally Dividing | |
| #9118 | Flip or Not | |
| #9119 | Graph Weighting | |
| #9120 | Huge Segment Tree | |
| #9121 | I Love Marathon Contest | |
| #9122 | Japanese Gift Money | |
| #9123 | Kth Sum | |
| #9124 | Largest Triangle | |
| #9125 | Majority and Permutation | |
| #9126 | Number of Abbreviations | |
| #9127 | Optimal Train Operation | |
| #9128 | Priority Queue 3 | |
| #9129 | Quotient Sum | |
| #9130 | Counting PermutationsUniversal Cup | |
| #9131 | Bookshelf TrackingUniversal Cup | |
| #9132 | Painting FencesUniversal Cup | |
| #9133 | Function with Many MaximumsUniversal Cup | |
| #9134 | Building a FenceUniversal Cup | |
| #9135 | TeleportsUniversal Cup | |
| #9136 | Exponent CalculatorUniversal Cup | |
| #9137 | Ancient CountryUniversal Cup | |
| #9138 | Marks SumUniversal CupCommunication | |
| #9139 | Prefix Divisible by SuffixUniversal Cup | |
| #9140 | Train DepotUniversal Cup | |
| #9141 | Array SpreadUniversal Cup | |
| #9142 | Uniting AmoebasUniversal Cup | |
| #9155 | 集合NOI 2024 Day 1 | |
| #9156 | 百万富翁NOI 2024 Day 1 | |
| #9157 | 树的定向NOI 2024 Day 1 | |
| #9158 | 分数NOI 2024 Day 2 | |
| #9159 | 登山NOI 2024 Day 2 | |
| #9160 | 树形图NOI 2024 Day 2 | |
| #9161 | Naval battleCEOI 2024 Day 1 | |
| #9162 | COVID testsCEOI 2024 Day 1Interactive | |
| #9163 | Text editorCEOI 2024 Day 1 | |
| #9164 | ToyCEOI 2024 Day 2 | |
| #9165 | Petrol stationsCEOI 2024 Day 2 | |
| #9166 | SprinklersCEOI 2024 Day 2 | |
| #9167 | Coprime ArrayOsijek Competitive Programming Camp 2024 Winter Day 9 | |
| #9168 | Square LocatorOsijek Competitive Programming Camp 2024 Winter Day 9 | |
| #9169 | -is-this-bitset-Osijek Competitive Programming Camp 2024 Winter Day 9 | |
| #9170 | Cycle GameOsijek Competitive Programming Camp 2024 Winter Day 9 | |
| #9171 | Sum of SquaresOsijek Competitive Programming Camp 2024 Winter Day 9 | |
| #9172 | Alternating CycleOsijek Competitive Programming Camp 2024 Winter Day 9 | |
| #9173 | Touching GrassOsijek Competitive Programming Camp 2024 Winter Day 9 | |
| #9174 | Game DesignOsijek Competitive Programming Camp 2024 Winter Day 9 | |
| #9175 | Geometry HackingOsijek Competitive Programming Camp 2024 Winter Day 9 | |
| #9176 | Non-Interactive NimOsijek Competitive Programming Camp 2024 Winter Day 9 | |
| #9177 | String and NailsOsijek Competitive Programming Camp 2024 Winter Day 9 | |
| #9178 | All-You-Can-EatOsijek Competitive Programming Camp 2024 Winter Day 9Interactive | |
| #9182 | Infinite RaceEGOI 2024 Day 1 | |
| #9183 | BouquetEGOI 2024 Day 1 | |
| #9184 | Team CodingEGOI 2024 Day 1 | |
| #9185 | Garden DecorationsEGOI 2024 Day 1Communication | |
| #9186 | Circle PassingEGOI 2024 Day 2 | |
| #9187 | BikeparkingEGOI 2024 Day 2 | |
| #9188 | Light BulbsEGOI 2024 Day 2Interactive | |
| #9189 | Make them MeetEGOI 2024 Day 2 | |