s = input()

m3 = 0
m5 = 0

for c in s :
    m3 = (m3*4 + int(c))%3
    m5 = (m5*4 + int(c))%5
# print(m3,m5)
if m3==0 and m5==0:
    print('FizzBuzz')
elif m3==0:
    print('Fizz')
elif m5==0:
    print('Buzz')
else:
    print(s)