| Subtask no. | Testdata Range | Constraints | Score |
|---|---|---|---|
| 1 | 0 | 範例測資。 | 0 / 0 |
| 2 | 1 | $longtree = 77$ | 0 / 1 |
| 3 | 1~2 | $longtree = 49$ | 0 / 6 |
| 4 | 1~3 | $longtree = 42$ | 0 / 7 |
| 5 | 1~4 | $longtree = 38$ | 0 / 7 |
| 6 | 1~5 | $longtree = 36$ | 0 / 7 |
| 7 | 1~6 | $longtree = 34$ | 0 / 7 |
| 8 | 1~7 | $longtree = 32$ | 0 / 14 |
| 9 | 1~8 | $longtree = 29$ | 0 / 49 |
| 10 | 1~9 | $longtree = 27$ | 0 / 2 |