| ID | Problem Show tags Hide tags | AC / Tried | Difficulty | |
|---|---|---|---|---|
| 1810 | P1073 [NOIP 2009 提高组] 最优贸易 | 2 / 2 | 10 | |
| 1553 | 1553 [NOIP2012 普及组] 文化之旅 | 4 / 11 | 9 | |
| 1554 | 1554 [NOIP2013 普及组] 车站分级 | 1 / 6 | 10 | |
| 1824 | 1824 「一本通 3.5 例 1」受欢迎的牛 | 1 / 2 | 10 | |
| 1811 | P3008 [USACO11JAN] Roads and Planes G | 1 / 1 | 10 | |
| 1817 | P3039 [NOI2008] 假面舞会 | 1 / 2 | 10 | |
| 1825 | P3057 [USACO03FALL / HAOI2006] 受欢迎的牛 G | 0 / 0 | (None) | |
| 1809 | ybt1496 架设电话线 | 3 / 3 | 10 | |
| 1808 | ybt1500 新年好 | 6 / 16 | 8 |
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