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  1. #include<bits/stdc++.h>
  2.  using namespace std;
  3.  int main (){
  4.  int n; cin>>n ;
  5.  
  6.  long s = 0;
  7.  for( int i =1 ; i <= n ; i++){
  8.  	;
  9.  	s +=i*i;
  10.  }
  11.  cout << s <<endl;
  12. return 0;
  13.  
  14.  }
Success #stdin #stdout 0.01s 5304KB
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https://ideone.com/1zLaT7
language:
C++ (gcc 8.3)
created:
4 days ago
visibility:
public

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