42234

Run ID	Author	Problem	Lang	Verdict	Time	Memory	Code Length	Submit Time
42234	jiabokai	求和	C++	Wrong Answer	0 MS	256 KB	171	2024-02-25 09:19:17

#include<bits/stdc++.h> using namespace std; int main() { int n,sum=0,cnt=0; cin>>n; for(int i=0;i<n;i++){ sum+=i; cnt+=sum; } cout<<cnt; return 0; }