| #7001 | Continuous IntervalsMulti-Provincial 2018 | |
| #7002 | Acyclic OrientationsMulti-Provincial 2018 | |
| #7003 | Rikka with Minimum Spanning TreesXuzhou Regional 2018 | |
| #7004 | Rikka with Line GraphsXuzhou Regional 2018 | |
| #7005 | Rikka with ConsistencyXuzhou Regional 2018 | |
| #7006 | Rikka with SubsequencesXuzhou Regional 2018 | |
| #7007 | Rikka with Data StructuresXuzhou Regional 2018 | |
| #7008 | Rikka with Nice Counting Striking BackXuzhou Regional 2018 | |
| #7009 | Rikka with Intersections of PathsXuzhou Regional 2018 | |
| #7010 | Rikka with A Long Colour PaletteXuzhou Regional 2018 | |
| #7011 | Rikka with Sorting NetworksXuzhou Regional 2018 | |
| #7012 | Rikka with An Unnamed TempleXuzhou Regional 2018 | |
| #7013 | Rikka with AntsXuzhou Regional 2018 | |
| #7014 | Rikka with Grid GraphsXuzhou Regional 2018 | |
| #7015 | Rikka with IlluminationsXuzhou Regional 2018 | |
| #7016 | SockpuppetsShenyang Regional 2018 | |
| #7017 | Sequences GeneratorShenyang Regional 2018 | |
| #7018 | Insertion SortShenyang Regional 2018 | |
| #7019 | Diameter of a TreeShenyang Regional 2018 | |
| #7020 | The Kouga Ninja ScrollsShenyang Regional 2018 | |
| #7021 | Counting Sheep in Ami DongsuoShenyang Regional 2018 | |
| #7022 | Best ACMer Solves the Hardest ProblemShenyang Regional 2018 | |
| #7023 | Rainbow GraphShenyang Regional 2018 | |
| #7024 | Distance Between SweetheartsShenyang Regional 2018 | |
| #7025 | How Much Memory Your Code Is Using?Shenyang Regional 2018 | |
| #7026 | Let the Flames BeginShenyang Regional 2018 | |
| #7027 | Machining Disc RotorsShenyang Regional 2018 | |
| #7028 | Renaissance Past in NancyShenyang Regional 2018 | |
| #7029 | Xu Xiake in Henan ProvinceJiaozuo Regional 2018 | |
| #7030 | Ultraman vs. Aodzilla and BodzillaJiaozuo Regional 2018 | |
| #7031 | Supreme CommandJiaozuo Regional 2018 | |
| #7032 | Keiichi Tsuchiya the Drift KingJiaozuo Regional 2018 | |
| #7033 | Resistors in ParallelJiaozuo Regional 2018 | |
| #7034 | HoneycombJiaozuo Regional 2018 | |
| #7035 | Shortest Paths on Random ForestsJiaozuo Regional 2018 | |
| #7036 | Can You Solve the Harder Problem?Jiaozuo Regional 2018 | |
| #7037 | DistanceJiaozuo Regional 2018 | |
| #7038 | Carpets RemovalJiaozuo Regional 2018 | |
| #7039 | Counting Failures on a TrieJiaozuo Regional 2018 | |
| #7040 | Connected SubgraphsJiaozuo Regional 2018 | |
| #7041 | Girls Band PartyYinchuan Regional 2019 | |
| #7042 | So EasyYinchuan Regional 2019 | |
| #7043 | Image ProcessingYinchuan Regional 2019 | |
| #7044 | Easy ProblemYinchuan Regional 2019 | |
| #7045 | XOR TreeYinchuan Regional 2019 | |
| #7046 | Function!Yinchuan Regional 2019 | |
| #7047 | Pot!!Yinchuan Regional 2019 | |
| #7048 | Delivery RouteYinchuan Regional 2019 | |
| #7049 | Base62Yinchuan Regional 2019 | |
| #7050 | Toad's TravelYinchuan Regional 2019 | |
| #7051 | Largest Common SubmatrixYinchuan Regional 2019 | |
| #7052 | Xian XiangYinchuan Regional 2019 | |
| #7053 | Crazy CakeYinchuan Regional 2019 | |
| #7054 | Fibonacci SequenceYinchuan Regional 2019 | |
| #7055 | A Hard ProblemNanjing Regional 2019 | |
| #7056 | ChessboardNanjing Regional 2019 | |
| #7057 | Digital PathNanjing Regional 2019 | |
| #7058 | HolesNanjing Regional 2019 | |
| #7059 | ObservationNanjing Regional 2019 | |
| #7060 | Paper GradingNanjing Regional 2019 | |
| #7061 | Poker GameNanjing Regional 2019 | |
| #7062 | Prince and PrincessNanjing Regional 2019 | |
| #7063 | Space StationNanjing Regional 2019 | |
| #7064 | SpyNanjing Regional 2019 | |
| #7065 | TriangleNanjing Regional 2019 | |
| #7066 | Best PlayerYinchuan Regional 2020 | |
| #7067 | The Great WallYinchuan Regional 2020 | |
| #7068 | Lucky SequenceYinchuan Regional 2020 | |
| #7069 | FarmYinchuan Regional 2020 | |
| #7070 | IsomerismYinchuan Regional 2020 | |
| #7071 | Maximize the RatioYinchuan Regional 2020 | |
| #7072 | PhotographYinchuan Regional 2020 | |
| #7073 | Absolute SpaceYinchuan Regional 2020 | |
| #7074 | The Answer!Yinchuan Regional 2020 | |
| #7075 | Let's Play Jigsaw Puzzles!Yinchuan Regional 2020 | |
| #7076 | Browser GamesYinchuan Regional 2020 | |
| #7077 | Sheep VillageYinchuan Regional 2020 | |
| #7078 | Tower of the SorcererYinchuan Regional 2020 | |
| #7079 | ArrayMoscow Pre-Finals Workshops 2019 Day 2 | |
| #7080 | Chiaki ChainMoscow Pre-Finals Workshops 2019 Day 2 | |
| #7081 | Cut the PlaneMoscow Pre-Finals Workshops 2019 Day 2 | |
| #7082 | Edges CountingMoscow Pre-Finals Workshops 2019 Day 2 | |
| #7083 | EquanimousMoscow Pre-Finals Workshops 2019 Day 2 | |
| #7084 | Fighting Against MonstersMoscow Pre-Finals Workshops 2019 Day 2 | |
| #7085 | Mysterious Triple SequenceMoscow Pre-Finals Workshops 2019 Day 2 | |
| #7086 | Inner ProductMoscow Pre-Finals Workshops 2019 Day 2 | |
| #7087 | Counting PolygonsMoscow Pre-Finals Workshops 2019 Day 2 | |
| #7088 | Square GraphMoscow Pre-Finals Workshops 2019 Day 2 | |
| #7089 | Three DimensionsMoscow Pre-Finals Workshops 2019 Day 2 | |