#include <stdio.h>

int number(int n)
{

	if(n == 1)
	return n;
	int half = n/2;
	int k = 2*number(n/2) + half*half;
	return (n%2)?(k+n):k;
	
}

int main(void) {
	printf("%d",number(11));
	return 0;
}