| ID | Problem Show tags Hide tags | AC / Tried | Difficulty | |
|---|---|---|---|---|
| 392 | P1040 [NOIP2003 提高组] 加分二叉树 | 1 / 2 | 10 | |
| 315 | P1099 [NOIP2007 提高组] 树网的核 | 2 / 13 | 9 | |
| 345 | P1120 小木棍 | 12 / 268 | 9 | |
| 389 | P1210 [USACO1.3] 最长的回文 Calf Flac | 2 / 6 | 10 | |
| 303 | P1379 八数码难题 | 11 / 70 | 8 | |
| 402 | P1879 [USACO06NOV] Corn Fields G | 11 / 44 | 7 | |
| 257 | P3498 [POI2010] KOR-Beads | 0 / 2 | 10 | |
| 406 | P3959 [NOIP2017 提高组] 宝藏 | 3 / 13 | 9 | |
| 284 | P4168 [Violet] 蒲公英 | 2 / 37 | 9 | |
| 385 | P4170 [CQOI2007] 涂色 | 8 / 24 | 7 | |
| 383 | P4290 [HAOI2008] 玩具取名 | 9 / 30 | 7 | |
| 319 | P5002 专心OI - 找祖先 | 2 / 8 | 10 | 
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