str_use = input() li = [] for item in str_use: li.append(str_use.count(item)) num, flag = max(li) - min(li), 0 for i in range(2, num // 2 + 1): if num % i == 0: break if i == num // 2: flag = 1 if num in [2, 3] or flag == 1: print('Lucky Word') print(num) else: print('No Answer') print(0)