| Subtask no. | Testdata Range | Constraints | Score |
|---|---|---|---|
| 1 | 0 | 範例測資 | 0 / 0 |
| 2 | 1~7 | $s_1 = s_2 = \ldots = s_N$ | 0 / 4 |
| 3 | 8~16 | $1 \le N \le 3000$ 且 $1 \le M \le 3000$ | 0 / 7 |
| 4 | 8~29 | $1 \le N \le 3000$ | 0 / 24 |
| 5 | 8~16, 30~42 | $1 \le M \le 3000$ | 0 / 10 |
| 6 | 43~55 | $C=1$ | 0 / 23 |
| 7 | 0~85 | 無額外限制 | 0 / 32 |