func main()
	var x: int :: cui@inputInt()
	switch(x)
	case 3, 4, 5
		do cui@print("spring\n")
	case 6, 7, 8
		do cui@print("summer\n")
	case 9, 10, 11
		do cui@print("fall\n")
	case 12, 1, 2
		do cui@print("winter\n")
	end switch
end func