| ID | Problem Show tags Hide tags | AC / Tried | Difficulty | |
|---|---|---|---|---|
| 1504 | AcWing240 食物链 | 2 / 34 | 9 | |
| 1502 | AcWing836 合并集合 | 18 / 41 | 5 | |
| 1503 | AcWing837 连通块中点的数量 | 9 / 22 | 7 | |
| 1822 | P3055 [NOI2018] 归程 | 0 / 0 | (None) |
By signing up a XAZXOI universal account, you can submit code and join discussions in all online judging services provided by us.