炸ll了
我是用ull写的
by Xeqwq @ 2022-03-08 20:53:32
@[Justin123_](/user/677553) long long不够，开unsigned long long
by lonely_cyx @ 2022-03-08 20:53:35
@[Justin123_](/user/677553)
你这会爆数据范围
```cpp
#include <bits/stdc++.h>
using namespace std;
int main()
{
unsigned long long s ;
cin >> s;
cout << s*(s-1)/2*(s-2)/3*(s-3)/4;
return 0;
}
```
by lucas_jy @ 2022-03-08 20:55:56
谢谢,通过了٩(๑❛ᴗ❛๑)۶
by zt17 @ 2022-03-08 21:07:12