| ID | Problem Show tags Hide tags | AC / Tried | Difficulty | |
|---|---|---|---|---|
| 1308 | NOIPJ2013D 车站分级 | 10 / 133 | 9 | |
| 1173 | P1173 昂贵的礼物 | 1 / 3 | 10 | |
| 1362 | P1362 查找文献 | 13 / 49 | 7 | |
| 1365 | P1365 狡兔 k 窟 | 1 / 23 | 10 | |
| 1437 | P1437 [HAOI2016] 食物链 | 2 / 7 | 10 |
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