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| #1243 | TerritoriesPetrozavodsk Summer 2020 Day 1PA 2019 Final | |
| #1643 | ArcheologistsSEERC 2020 | |
| #1877 | Matryoshka DollsPetrozavodsk Summer 2021 Day 7 | |
| #1963 | Squid GameSeoul Regional 2021Moscow International Workshops 2021 Day 4 | |
| #2115 | Od deski do deski [A]PA 2021 | |
| #2128 | Drzewo czerwono-czarne [C]PA 2021 | |
| #2376 | Game on a TreeSEERC 2019 | |
| #2486 | Build the StringGP of Urals | |
| #2507 | 方差NOIP 2021 | |
| #2544 | Flatland CurrencyPetrozavodsk Winter 2022 Day 1 | |
| #2582 | 物理实验SDOI 2018 | |
| #2617 | Browsing the CollectionPetrozavodsk Winter 2022 Day 7Gennady Korotkevich Contest | |
| #2836 | Permutation PatternCCPC Final 2020 | |
| #3002 | Busy BoardNAIPC 2019 | |
| #4212 | BracketsRuCode 2020 Division A+B Championship | |
| #4220 | Joining PointsRuCode 2020 Division A+B Championship | |
| #4244 | Circle ConvertationDiscover Singapore 2019 Day 5300iq Contest | |
| #4561 | Catfish FarmIOI 2022 Day 1 | |
| #4629 | Longest Increasing SubsequenceByteDance-Moscow Workshops Camp 2022 Final | |
| #4636 | Optimal AssortmentByteDance-Moscow Workshops Camp 2022 Final | |
| #4810 | Add OnePetrozavodsk Summer 2022 Day 3 | |
| #4812 | Counting SequencePetrozavodsk Summer 2022 Day 3 | |
| #4926 | Where Is the Root?eJOI 2022 Day 1Interactive | |
| #5042 | FlowEC-Final 2019 | |
| #5256 | InsertionsCERC 2022 | |
| #5504 | Flower GardenAMPPZ 2022 | |
| #5699 | 单调上升路径CTSC 2016 Day 2CTS 2016 Day 2 | |
| #6307 | Chase Game 2EC-Final 2022 | |
| #6331 | Jewel Game | |
| #6501 | Graph PartitioningCCPC Final 2022 | |
| #6512 | Completely Multiplicative FunctionCCPC Final 2022 | |
| #6683 | Difficult Constructive ProblemShandong Provincial 2023 | |
| #6844 | Suffix AutomatonCCPC Guilin 2021 | |
| #6845 | TaxCCPC Guilin 2021 | |
| #7523 | Partially Free MealCCPC Online 2023Universal Cup | |
| #7739 | KnapsackNanjing Regional 2023 | |
| #7743 | Grand FinaleNanjing Regional 2023 | |
| #8650 | Island HoppingJOISC 2024 Day 4JOIST 2024 Day 4Interactive | |
| #8815 | Space StationThe 2nd Universal Cup Semifinals | |
| #8819 | CNOI KnowledgeThe 2nd Universal Cup SemifinalsThe 2nd Universal Cup Finals (Warm up)Interactive | |
| #9538 | Closest DerangementChengdu Regional 2024 | |
| #9695 | Trash Problem | |
| #9812 | Binary SearchNWERC 2024 | |
| #10101 | Longest Increasing SubsequenceThe 2nd Universal Cup Finals | |
| #10108 | Divide the StringThe 2nd Universal Cup Finals | |
| #10110 | Not Another Constructive ProblemThe 2nd Universal Cup Finals | |
| #11107 | Iridescent UniverseCCPC Final 2024 | |
| #11110 | Witnessing the MiracleCCPC Final 2024 | |
| #11116 | Yearning for YonderCCPC Final 2024Interactive | |
| #11521 | Rikka with Maximum Subsegment Sum | |
| #12005 | Count Modulo 2Moscow Pre-Finals Workshop 2020 Day 2 | |
| #14020 | Master of CardsThe 3rd Universal Cup Semifinals | |
| #14021 | Shortcut on TreeThe 3rd Universal Cup Semifinals | |
| #18206 | Guess the PermutationThe 3rd Universal Cup FinalsInteractive | |
| #18207 | Defense LineThe 3rd Universal Cup Finals | |