func main()
	var a: int :: cui@inputInt()
	var b: int :: cui@inputInt()
	var min: int :: lib@min(a, b)
	var ans: int :: 2 * (a + b) - (2 * min + 1)
	if(a = b)
		do ans :+ 1
	end if
	do cui@print("\{ans}\n")
end func