func main()
	var n: int :: cui@inputInt()
	var num: []int :: #[4]int
	for i(0, n - 1)
		var x: int :: cui@inputInt()
		var y: int :: cui@inputInt()
		do num[(x % 2) * 2 + (y % 2)] :+ 1
	end for
	
	var count: int :: 0
	for i(0, 3)
		do count :+ num[i] / 2
	end for
	var ans: bool :: count % 2 = 1
	do cui@print(ans ?("Alice\n", "Bob\n"))
end func