#include <stdio.h>
int main(void)
{
int i, j, inputN, sum, small_sum;
sum = 0;
for(i = 1; i <= inputN; i++)
{
small_sum = 1;
for(j = 1; j <= i; j++)
small_sum *= i;
sum += small_sum;
}
return 0;
}
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