a = input()
b = []
d = []
def zs(c):
    for i in range(2,c):
        if i % 2 == 0:
            return False
    else:
        d.append(c)
for i in a:
    b.append(a.count(i))
c = max(b) - min(b)
zs(c)
for i in d:
    if i:
        print('Lucky Word',i,sep = '\n')
    else:
        print('No Answer',0,sep = '\n')