| Subtask no. | Testdata Range | Constraints | Score |
|---|---|---|---|
| 1 | 0~4 | $k _ i = 0$ | 0 / 1 |
| 2 | 5~9 | $a _ i = c _ i$ | 0 / 1 |
| 3 | 10~14 | $n = 1 $ 且 $ k _ i = 1$ | 0 / 2 |
| 4 | 15~19 | $t _ i = 0$ | 0 / 3 |
| 5 | 20~24 | $c _ i = 0$ | 0 / 5 |
| 6 | 25~29 | $a _ i = 1$ | 0 / 8 |
| 7 | 30~39 | $k _ i = 1$ | 0 / 13 |
| 8 | 40~49 | $n = 1$ | 0 / 21 |
| 9 | 50~69 | no other limits | 0 / 46 |