@[Griezmann_7](/user/63563) 要加 `cmath` 库·
by wannacry_ @ 2023-09-11 17:04:15
@[Griezmann_7](/user/63563)
加上头文件``#include<cmath>``
求关注
by shengyeqi @ 2023-09-11 17:05:29
也可以加``#include<bits/stdc++.h>``这个万能头
by shengyeqi @ 2023-09-11 17:09:05
```ceil```函数是头文件```#include<cmath>```里面的，
在程序中添加```#include<cmath>```就好了
by HashHacker_Peas @ 2023-09-11 17:17:50