| ID | Problem Show tags Hide tags | AC / Tried | Difficulty | |
|---|---|---|---|---|
| 17 | 17 [R3E]知识点学习 | 60 / 631 | 9 | |
| 35 | 35 [R6E]树上求和 | 106 / 291 | 5 | |
| 59 | 59 [R10E]知识点学习2 | 84 / 338 | 7 | |
| 96 | 96 [R16F]知识点学习3 | 41 / 291 | 8 | |
| 101 | 101 [R17E]线路架设 | 19 / 259 | 9 | |
| 249 | 249 [R40F]Yet another tree problem | 3 / 96 | 10 |
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