func main()
	var a: int :: cui@inputInt()
	var b: int :: cui@inputInt()
	var c: int :: cui@inputInt()
	var d: int :: cui@inputInt()
	
	var n: int :: a * c - b * d
	var m: int :: a * d + b * c
	do cui@print("\{n} \{m}\n")
end func