#include <iostream>
using namespace std;
int main(int argc, char** argv) {
int k,sum;
sum =1; k = 1;
for (int i=1;i<=506;i++)
for (int j=0;j<4;j++)
{
k = k+2*i;
sum = sum +k;
}
cout << sum;
return 0;
}
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