| #6201 | 快递公司2020 集训队互测 Round 2 | |
| #6202 | 小 C 的比赛2020 集训队互测 Round 2 | |
| #6210 | 灯塔JSOI 2016 Round 1 Day 1 | |
| #6211 | 位运算JSOI 2016 Round 1 Day 1 | |
| #6212 | 炸弹攻击JSOI 2016 Round 1 Day 1 | |
| #6213 | 飞机调度JSOI 2016 Round 1 Day 2 | |
| #6214 | 无界单词JSOI 2016 Round 1 Day 2 | |
| #6215 | 轻重路径JSOI 2016 Round 1 Day 2 | |
| #6216 | 最佳团队JSOI 2016 Round 2 Day 1 | |
| #6217 | 独特的树叶JSOI 2016 Round 2 Day 1 | |
| #6218 | 扭动的回文串JSOI 2016 Round 2 Day 1 | |
| #6219 | 病毒感染JSOI 2016 Round 2 Day 2 | |
| #6220 | 反质数序列JSOI 2016 Round 2 Day 2 | |
| #6221 | 炸弹攻击 2JSOI 2016 Round 2 Day 2 | |
| #6222 | 精准预测JSOI 2019 Round 2 | |
| #6223 | 神经网络JSOI 2019 Round 2 | |
| #6224 | 节日庆典JSOI 2019 Round 2 | |
| #6225 | 生成树SNOI 2020 Day 1 | |
| #6226 | 取石子SNOI 2020 Day 1 | |
| #6227 | 区间和SNOI 2020 Day 1 | |
| #6228 | 字符串SNOI 2020 Day 2 | |
| #6229 | 排列SNOI 2020 Day 2 | |
| #6230 | 水池SNOI 2020 Day 2 | |
| #6231 | 起床困难综合症NOI 2014 Day 1 | |
| #6232 | 魔法森林NOI 2014 Day 1 | |
| #6233 | 消除游戏NOI 2014 Day 1Output Only | |
| #6234 | 动物园NOI 2014 Day 2 | |
| #6235 | 随机数生成器NOI 2014 Day 2 | |
| #6236 | 购票NOI 2014 Day 2 | |
| #6237 | 寻宝游戏AHOI 2018 Day 1HNOI 2018 Day 1 | |
| #6238 | 转盘AHOI 2018 Day 1HNOI 2018 Day 1 | |
| #6239 | 毒瘤AHOI 2018 Day 1HNOI 2018 Day 1 | |
| #6240 | 游戏AHOI 2018 Day 2HNOI 2018 Day 2 | |
| #6241 | 排列AHOI 2018 Day 2HNOI 2018 Day 2 | |
| #6242 | 道路AHOI 2018 Day 2HNOI 2018 Day 2 | |
| #6243 | دیوارکشTehran Online 2022 | |
| #6244 | سینما بررهTehran Online 2022 | |
| #6245 | نورانTehran Online 2022 | |
| #6246 | مربع مارپیچTehran Online 2022 | |
| #6247 | خوشحال پرانتزیTehran Online 2022 | |
| #6248 | هاکونا ماتاتاTehran Online 2022 | |
| #6249 | بازی آرایه ایTehran Online 2022 | |
| #6250 | کلاس طراحی الگوریتمهاTehran Online 2022 | |
| #6251 | راننده تاکسیTehran Online 2022 | |
| #6252 | درخت یا بوتهایTehran Online 2022 | |
| #6253 | Appeal to the Audience BAPC 2019 | |
| #6254 | Breaking BranchesBAPC 2019 | |
| #6255 | Conveyor BeltsBAPC 2019 | |
| #6256 | Deck RandomisationBAPC 2019 | |
| #6257 | Efficient ExchangeBAPC 2019 | |
| #6258 | Find my FamilyBAPC 2019 | |
| #6259 | Gluttonous GoopBAPC 2019 | |
| #6260 | Historic ExhibitionBAPC 2019 | |
| #6261 | Inquiry IIBAPC 2019 | |
| #6262 | Jazz it Up!BAPC 2019 | |
| #6263 | Keep Him InsideBAPC 2019 | |
| #6264 | Lucky DrawBAPC 2019 | |
| #6265 | PareidoliaUSACO 2023 US Open Platinum | |
| #6266 | Good BitstringsUSACO 2023 US Open Platinum | |
| #6267 | Triples of CowsUSACO 2023 US Open Platinum | |
| #6292 | 最小公倍数HNOI 2016 Day 1 | |
| #6293 | 网络HNOI 2016 Day 1 | |
| #6294 | 树HNOI 2016 Day 1 | |
| #6295 | 序列HNOI 2016 Day 2 | |
| #6296 | 矿区HNOI 2016 Day 2 | |
| #6297 | 大数HNOI 2016 Day 2 | |
| #6298 | ColoringEC-Final 2022 | |
| #6299 | Binary StringEC-Final 2022 | |
| #6300 | Best Carry Player 2EC-Final 2022 | |