limit = 10
0.upto(limit) do |x|
	0.upto(limit) do |y|
		0.upto(limit) do |z|
			w = x*x + y*y +z*z - x*y*z
			printf( "( %2d , %2d , %2d ) : %3d\n" , x , y , z , w )
		end
	end
end