Răspuns :

Ana427257id

Răspuns:

Salut! :)

include <iostream>

using namespace std

int main()

{

int n, i;

long long s=0;

cin>>n;

for (i=1; i<=n; i++)

s=s+(i*(i+1));

cout<<s;

return 0;

}

Sper ca te ajuta.

Succes! ♡︎♥︎♡︎

Rayzenid

#include <iostream>

using namespace std;

int main()

{

   unsigned int n, S = 0;

   cin >> n;

   for (int i = 1; i <= n; i++)

   {

       S = S + i * (i + 1);

   }

   cout << S;

}

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