| Subtask no. | Testdata Range | Constraints | Score | 
|---|---|---|---|
| 1 | 0~4 | 範例測資 | 0 / 0 | 
| 2 | 1, 5~9 | $b_i = 0, T = 0$ | 0 / 4 | 
| 3 | 2, 5, 10~14 | $K = 1, T = 0$ | 0 / 7 | 
| 4 | 3, 5, 15~19 | $a_i = 0, T = 0$ | 0 / 12 | 
| 5 | 0~5, 20~26 | $1 \leq N \leq 2000$ | 0 / 19 | 
| 6 | 0~5, 20~34 | $1 \leq N \leq 100000$ | 0 / 37 | 
| 7 | 0~44 | 無額外限制 | 0 / 21 |