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  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. int main()
  6. {
  7.    int x;
  8.    cin>>x;
  9.    while(x!=0)
  10.    {
  11.        cout<<(x*(x+1)*(2*x+1))/6<<"\n";
  12.        cin>>x;
  13.    }
  14.     return 0;
  15. }
  16.  
Success #stdin #stdout 0s 15232KB
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https://ideone.com/ut2TeJ
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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