| Subtask no. | Testdata Range | Constraints | Score |
|---|---|---|---|
| 1 | 0~2 | 範例測試資料 | 0 / 0 |
| 2 | 0~19 | $n \le 15$ 且 $k \le 3$ | 10 / 10 |
| 3 | 2, 20~29 | $ty = 1$ 且 $n,\ k \le 1000$ | 10 / 10 |
| 4 | 2, 20~39 | $ty = 1$ 且 $n \le 10$$6$ | 15 / 15 |
| 5 | 2, 20~49 | $ty = 1$ | 0 / 5 |
| 6 | 0~1, 50~59 | $ty = 2$ 且 $n,\ k \le 1000$ | 15 / 15 |
| 7 | 0~1, 50~69 | $ty = 2$ 且 $n \le 10$$6$ | 35 / 35 |
| 8 | 0~1, 50~79 | $ty = 2$ | 0 / 10 |