| ID | Problem Show tags Hide tags | AC / Tried | Difficulty | |
|---|---|---|---|---|
| 90 | 90 [R15F]树上炸弹 | 45 / 401 | 9 | |
| 101 | 101 [R17E]线路架设 | 17 / 246 | 9 | |
| 120 | 120 [R20F]构图判树 | 47 / 724 | 8 | |
| 135 | 135 [R22G]双路径极值差 | 6 / 208 | 9 | |
| 147 | 147 [R24F]炮台防御 | 5 / 194 | 10 | |
| 153 | 153 [R25F]树上选链 | 9 / 340 | 10 | |
| 158 | 158 [R26E]树上三元组 | 118 / 447 | 7 | |
| 171 | 171 [R28D]树上路径 | 134 / 982 | 8 | |
| 195 | 195 [R32D]还原树 | 114 / 336 | 6 | |
| 196 | 196 [R32E]回文串 | 46 / 286 | 8 | |
| 221 | 221 [R36F]运输线路 | 10 / 153 | 9 |
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