| Subtask no. | Testdata Range | Constraints | Score |
|---|---|---|---|
| 1 | 0~3 | $\forall 0 \leq i \leq n, a_i = 0, k \leq 10$ | 0 / 3 |
| 2 | 4~7 | $\forall 0 \leq i \leq n, a_i = 0, \forall 1 \leq i \leq n, b_i = i - 1$ | 0 / 15 |
| 3 | 0~11 | $\forall 0 \leq i \leq n, a_i = 0$ | 0 / 20 |
| 4 | 12~15 | $n \leq 10 ^ 5$ | 0 / 36 |
| 5 | 0~22 | 無其他限制 | 0 / 26 |