| ID | Problem Show tags Hide tags | AC / Tried | Difficulty | |
|---|---|---|---|---|
| 1514 | AcWing848 有向图的拓扑序列 | 4 / 4 | 10 | |
| 1554 | 1554 [NOIP2013 普及组] 车站分级 | 1 / 6 | 10 | |
| 1816 | P3038 [HNOI2015]菜肴制作 | 0 / 0 | (None) |
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