ruanjingqi @ 2022-11-07 20:14:16
#include<iostream>
using namespace std;
int main(){
long long n,ans=0;
cin>>n;
for(int i=1;i<=n;i++){
long long factor=factor*i;
for(int j=1;j<=i;j++)
factor=j*i;
ans+=factor;
}
cout<<ans<<endl;
return 0;
}
by Gunpowder_OI @ 2022-11-07 20:17:25
要开高精
by ruanjingqi @ 2022-11-08 11:37:50
@Gunpowder_OI ...乘法高?
by Gunpowder_OI @ 2022-11-08 12:28:45
@ruanjingqi 乘法加法都开qwq