| # | ID | Name | Difficulty | Solver |
|---|---|---|---|---|
| 1 | abc348_e | H. Minimize Sum of Distances | 1347 | 5070 |
| 2 | abc291_h | Ex. Balanced Tree | 2097 | 1066 |
| 3 | abc362_f | I. Perfect Matching on a Tree | 2186 | 1541 |
| 4 | abc163_f | F. path pass i | 2470 | 1449 |
| 5 | yahoo_procon2018_final_c | C. 木の問題 | null | 164 |
| 6 | dwacon2018_prelims_e | E. ニワンゴくんの家探し | null | 106 |
| 7 | dwacon6th_final_c | C. Tree Shrinking | null | 38 |