func main()
	var a1: int :: cui@inputInt()
	do cui@inputInt()
	var a2: int :: cui@inputInt()
	do cui@inputInt()
	var a3: int :: cui@inputInt()
	var ans: bool :: (a1 + a2 + a3) % 2 = 0
	do cui@print("\{ans ?(":-)", ":-(")}\n")
end func