#include <assert.h>

int main()
{
	int circle, square, triangle;
	
	if (circle+circle!=10)
                return 0;
	if (circle*square+square!=12)
                return 0;
	if (circle*square-triangle*circle!=circle)
                return 0;
        if (circle<0)
                return 0;
        if (square<0)
                return 0;
        if (triangle<0)
                return 0;

	// all constraints should be satisfied at this point
	assert(0);
        return 1;
};