article = input() word_count = {} word_list = ' '.join(article)

for word in word_list: if word in word_count: word_count[word] += 1 else: word_count[word] = 1

dic_sort = sorted(word_count.items(),key=lambda item:item[1])

dic_last = dict(dic_sort)

mini=list(dic_last.values())[1] # 输出字典的第一个value(最小值) maxi=list(dic_last.values())[-2] # 输出字典的最后一个value(最大值)

num=maxi-mini if num > 1: # 查看因子 for i in range(2, num): if (num % i) == 0: print("No Answer") print(0)

        break
else:
    print("Lucky Word")
    print(num)

else: print("No Answer") print(0)