```cpp
f[i][i]=1;
```
这一行有问题,你的i的从1到n(6<n≤200)的,但你数组开的是f[15][205]
by kk1501201 @ 2023-07-06 16:38:08
@[kk1501201](/user/259625) 嗯,不RE了,~~但是WA了~~~~
by bobi0577 @ 2023-07-08 20:04:51
@[bobi0577](/user/734982) 额……这就不是我能改的了qwq
这边建议用搜索(bushi)
by kk1501201 @ 2023-07-09 08:08:20
@[bobi0577](/user/734982) 状态转移方程弄错了,(然后你输入是nk输出也应该nk吧) 边界没处理好
by sading @ 2023-08-26 09:55:44