42238

Run ID	Author	Problem	Lang	Verdict	Time	Memory	Code Length	Submit Time
42238	yanghaowen	求和	C++	Accepted	1 MS	240 KB	205	2024-02-25 09:19:52

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