74825

Run ID	Author	Problem	Lang	Verdict	Score	Time	Memory	Code Length	Submit Time
74825	张浩然	数列求和	C++	Accepted	100	0 MS	252 KB	156	2023-06-03 06:53:43

#include<bits/stdc++.h> using namespace std; long long n,ans; int main(){ cin>>n; for(int i=1;i<=n;i++){ ans+=i*i; } cout<<ans; return 0; }