可能是ans炸了（
by 诚实的抱抱熊 @ 2021-05-12 21:50:32
另外 $num*=n$ 是啥意思，不应该是 $num *= i$ 吗……
by 诚实的抱抱熊 @ 2021-05-12 21:51:38
改一下，谢谢
by 德布劳内yyds @ 2021-05-12 22:32:01
## 过了，谢谢julao
```
#include<bits/stdc++.h>
using namespace std;
long long n,num =1;
int main()
{
cin>>n;
for(int i =1;i<=n;++i)
{
num *= i;
while(num%10==0)
num /= 10;
num %=1000000;
}
cout<<num%10<<endl;
return 0;
}
```
by 德布劳内yyds @ 2021-05-12 22:34:18