| #857 | Social DistancingPetrozavodsk Winter 2021 Day 1 | |
| #967 | Rectangle PaintingPetrozavodsk Winter 2021 Day 5 | |
| #1260 | Hardcore String Counting 2Petrozavodsk Summer 2020 Day 2 | |
| #1874 | Goldberg Machine 2Petrozavodsk Summer 2021 Day 7 | |
| #1875 | NeinPetrozavodsk Summer 2021 Day 7 | |
| #1884 | Mission Impossible: Grand Theft AutoPetrozavodsk Summer 2021 Day 7 | |
| #2064 | Bitset MasterPetrozavodsk Winter 2020 Day 9Yuhao Du Contest | |
| #2074 | LCM SumPetrozavodsk Winter 2020 Day 9Yuhao Du Contest | |
| #2211 | IOI Problem RevisedPetrozavodsk Summer 2018 Day 8Yuhao Du Contest | |
| #2349 | Rectangle TreePetrozavodsk Winter 2020 Day 1 | |
| #2555 | Two BulletsPetrozavodsk Winter 2022 Day 2 | |
| #2558 | Critical VertexPetrozavodsk Winter 2022 Day 2 | |
| #2559 | Endless RoadPetrozavodsk Winter 2022 Day 22021 KAIST RUN Spring Contest | |
| #2562 | Fake Plastic Trees 2Petrozavodsk Winter 2022 Day 22021 KAIST RUN Spring Contest | |
| #2594 | AntsPetrozavodsk Winter 2022 Day 5 | |
| #2599 | Anti-stressPetrozavodsk Winter 2022 Day 5 | |
| #2774 | SceneryWorld Finals 2017 | |
| #3039 | CleaningXX Open CupOpen Cup | |
| #4012 | 深搜ZJOI 2022 Day 2 | |
| #4219 | InsectsRuCode 2020 Division A+B Championship | |
| #4311 | AutomatonMoscow International Workshops 2018 Day 7 | |
| #4662 | 二次整数规划问题NOI 2022 Day 2 | |
| #4793 | QnpPetrozavodsk Summer 2017 Day 2 | |
| #4811 | Be CarefulPetrozavodsk Summer 2022 Day 3 | |
| #4818 | Inverse Line GraphPetrozavodsk Summer 2022 Day 3 | |
| #4822 | Matrix CountingPetrozavodsk Summer 2022 Day 3 | |
| #4878 | Easy ProblemPetrozavodsk Summer 2022 Day 7 | |
| #5048 | All Pair Maximum FlowEC-Final 2019 | |
| #5074 | Vision TestEC-Final 2021 | |
| #5142 | Grid PointsJinan Regional 2022 | |
| #5447 | 鸽子CTS 2023 Day 1Communication | |
| #5451 | 树据结构CTS 2023 Day 2WC 2023Interactive | |
| #5905 | Shifting PathsCode Jam 2012 World Finals | |
| #6185 | Best ProblemOsijek Competitive Programming Camp Winter 2023 Day 6Yuhao Du Contest | |
| #6191 | Hard ProblemOsijek Competitive Programming Camp Winter 2023 Day 6Yuhao Du Contest | |
| #6301 | Minimum SuffixEC-Final 2022 | |
| #6341 | The Last BattleJOISC 2023 Day 4Communication | |
| #6344 | The Best Problem of 2021Petrozavodsk Winter 2023 Day 6 | |
| #6372 | DanceMoscow International Workshops 2017 Day 4 | |
| #6511 | Balancing SequencesCCPC Final 2022 | |
| #6807 | Travel DreamMoscow Pre-Finals Workshop 2020 Day 5 | |
| #7089 | Three DimensionsMoscow Pre-Finals Workshops 2019 Day 2 | |
| #7398 | Triangle TilingByteDance-Moscow Workshops Camp 2020 Final | |
| #7609 | ColonizationUniversal Cup | |
| #7647 | 树哈希集训队互测 2023 Round 1 | |
| #7788 | Rook DetectionShenyang Regional 2023Interactive | |
| #7935 | Distinct GameSEERC 2023 | |
| #8012 | Jumping LightsPetrozavodsk Summer 2023 Day 5 | |
| #8089 | FlaaffyPetrozavodsk Summer 2019 Day 5 | |
| #8550 | All the Way LeftCCPC Final 2023 | |
| #8673 | 最短路径PKUSC 2024 Day 2 | |
| #8818 | Colorful Graph 3The 2nd Universal Cup Semifinals | |
| #9037 | Ancient Maps, Hidden DangerShanghai Regional 2024 | |
| #9237 | MessageIOI 2024 Day 1Communication | |
| #9630 | 沙堆 | |
| #9689 | 伪伪随机CTS 2025 Day 2Interactive | |
| #9976 | Guess the Polygon 2EC-Final 2024Interactive | |
| #10003 | Decorative BirdsPetrozavodsk Summer 2024 Day 22023 KAIST ICPC Mock Competition | |
| #10007 | Holes in QueuePetrozavodsk Summer 2024 Day 22023 KAIST ICPC Mock Competition | |
| #10099 | Traveling in Cells 2The 2nd Universal Cup Finals | |
| #10100 | Exchanging Kubic 3The 2nd Universal Cup Finals | |
| #10103 | Quad Kingdoms Chess 2The 2nd Universal Cup Finals | |
| #10407 | KindergartenWorld Finals 2024 | |
| #11113 | Ineffable CycleCCPC Final 2024 | |
| #11217 | Pulse NovaCCPC Final 2019 | |
| #11515 | Fibonnacci Suffix Array | |
| #12001 | CookiesMoscow Pre-Finals Workshop 2020 Day 2 | |
| #12002 | EvacuationMoscow Pre-Finals Workshop 2020 Day 2 | |
| #12012 | Yosupo's AlgorithmMoscow Pre-Finals Workshop 2020 Day 2 | |
| #13172 | Laser StrikeEGOI 2025 Day 2Communication | |
| #14422 | Absolutely FlatPetrozavodsk Summer 2025 Day 4 | |
| #14804 | Fallleaves01 and GolfNanjing Regional 2025 | |
| #16330 | Potential PeakEC-Final 2025 | |
| #18042 | Game | |
| #18254 | Seating PlanEGOI 2026 Day 2Interactive | |