word = input()
n = len(word)
zhishu = [2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97]
list = []
for i in range(0,n):
    s = word[i]
    z = [word.count(s)]
    list.append(z)
maxn = max(list)
minn = min(list)
if (maxn[0] - minn[0]) in zhishu:
    print("Lucky Word")
    print(maxn[0] - minn[0])
else:
    print("No Anwser")
    print(maxn[0] - minn[0])