#include <stdio.h>
FILE *fout = fopen("arbore.out", "wt");

int main()
{
int sum;
for (int i = 0; i < 30000; i++)
for (int j = 0; j < 30000; j++)
sum+= i * j;

fprintf(fout, "%d\n", sum);
fclose(fout);

  return 0;
}