| # | ID | Name | Difficulty | Solver |
|---|---|---|---|---|
| 1 | abc213_d | D. Takahashi Tour | 710 | 9483 |
| 2 | abc202_e | E. Count Descendants | 1638 | 4071 |
| 3 | abc294_g | G. Distance Queries on a Tree | 1702 | 2434 |
| 4 | abc165_f | F. LIS on Tree | 1843 | 3342 |
| 5 | abc133_f | F. Colorful Tree | 2330 | 1769 |
| 6 | abc163_f | F. path pass i | 2470 | 1264 |
| 7 | typical90_ai | 035. Preserve Connectivity（★7） | null | 810 |
| 8 | ttpc2019_m | M. Inversion Numbers of Tree | null | 177 |
| 9 | utpc2013_09 | I. 支配と友好 | null | 66 |