#include <stdio.h>

int main(int argc, char** argv)
{

	int a,b,c,d;

	a = 3;
	b = 1;
	c = 6;
	d = 3;

	printf("(%d-%d)*(%d-%d)/(%d+%d)=%d\n", \
		a, b, c, d, a, d, \
		(a-b)*(c-d)/(a+d)
	);

	return 0;
}