Determine the Winner in the Taco Game

In this problem, you are given a string (s) consisting of lowercase English letters. Two players, Alice and Bob, play a game with the following rule: if the string contains more than one unique character (i.e., ( |{s_i}| > 1 )), then Alice wins because she can always force a winning move; otherwise, if the string has only one unique character, Bob wins. Your task is to determine the winner given the input string.

inputFormat

Standard input consists of a single line containing the string (s), which is composed solely of lowercase English letters and has a length of at least 1.

outputFormat

Print (\text{Alice}) if Alice wins the game, otherwise print (\text{Bob}).## sample

a

Bob