| #8301 | Hold the LineHong Kong Regional 2019 | |
| #8302 | Incoming AsteroidsHong Kong Regional 2019 | |
| #8303 | Junior MathematicianHong Kong Regional 2019 | |
| #8304 | Key ProjectHong Kong Regional 2019 | |
| #8305 | AcceleratorMacau Regional 2020 | |
| #8306 | Boring ProblemMacau Regional 2020 | |
| #8307 | Club AssignmentMacau Regional 2020 | |
| #8308 | ArtifactsMacau Regional 2020 | |
| #8309 | MountainMacau Regional 2020 | |
| #8310 | Fixing NetworksMacau Regional 2020 | |
| #8311 | Game on SequenceMacau Regional 2020 | |
| #8312 | Fly Me To The MoonMacau Regional 2020 | |
| #8313 | Nim CheaterMacau Regional 2020 | |
| #8314 | Jewel GrabMacau Regional 2020 | |
| #8315 | Candy AdsMacau Regional 2020 | |
| #8316 | Random PermutationMacau Regional 2020 | |
| #8317 | 搬东西THUSC 2021 Day 1 | |
| #8318 | 白兰地厅的西瓜THUSC 2021 Day 1 | |
| #8319 | Emiya 家明天的饭THUSC 2021 Day 1 | |
| #8320 | 种树THUSC 2021 Day 1Communication | |
| #8321 | 季风 | |
| #8322 | 魔法手杖 | |
| #8323 | 虫洞 | |
| #8324 | 迷宫守卫 | |
| #8325 | 重塑时光 | |
| #8326 | 最长待机 | |
| #8327 | 积性函数求和 $10^{13}$ 方便 FFT 版模板题 | |
| #8328 | A Good Problem | |
| #8329 | Excuse | |
| #8330 | Count off 3 | |
| #8331 | Bot Brothers | |
| #8332 | Two in One | |
| #8333 | Gift | |
| #8334 | Gene | |
| #8335 | Fast Hash Transform | |
| #8336 | Indeterminate Equation | |
| #8337 | Counter Reset Problem | |
| #8338 | Quad Kingdoms Chess | |
| #8339 | Rooted Tree | |
| #8340 | 3 Sum | |
| #8341 | 序列 | |
| #8342 | 生成树 | |
| #8343 | 玩游戏 | |
| #8347 | 毒假强 | |
| #8348 | 赌徒 | |
| #8349 | 零和 | |
| #8350 | ddtt | |
| #8351 | Ruin the legend | |
| #8352 | 菱形覆盖 | |
| #8353 | T1 | |
| #8354 | T2 | |
| #8355 | T3 | |
| #8356 | 猜猜看 | |
| #8357 | 自动机 | |
| #8358 | 黑白点 | |
| #8359 | travel | |
| #8360 | distance | |
| #8361 | mazeInteractive | |
| #8362 | game | |
| #8363 | interactiveInteractive | |
| #8364 | permutation | |
| #8365 | 重复搬题 | |
| #8366 | 火车旅行 | |
| #8367 | 贴贴序列 | |
| #8368 | T1 | |
| #8369 | T2 | |
| #8370 | T3 | |