| Subtask no. | Testdata Range | Constraints | Score |
|---|---|---|---|
| 1 | 0 | 範例測資 | 0 / 0 |
| 2 | 1~3 | $K=1$ | 0 / 1 |
| 3 | 4~6 | $K=2$ | 0 / 2 |
| 4 | 7~9 | $K=3, \sum N \le 500$ | 0 / 3 |
| 5 | 10~12 | $K=4, \sum N \le 100$ | 4 / 4 |
| 6 | 7~9, 13~15 | $K=3, \sum N \le 3000$ | 0 / 5 |
| 7 | 7~9, 13~18 | $K=3$ | 0 / 6 |
| 8 | 10~12, 19~21 | $K=4, \sum N \le 3000$ | 0 / 10 |
| 9 | 7~15, 19~24 | $\sum N \le 3000$ | 0 / 28 |
| 10 | 0~29 | 無額外限制 | 0 / 41 |