33338

Run ID	Author	Problem	Lang	Verdict	Time	Memory	Code Length	Submit Time
33338	lnx	求阶乘的和	C++	Accepted	0 MS	248 KB	210	2023-12-08 19:07:44

#include<iostream> using namespace std; int main() { long long int n,s=0,t=1; cin>>n; for(int i=1;i<=n;i++) { t*=i; s+=t; } cout<<s; return 0; }