n = str(input())
s = list(n)
s.reverse()
r3 = 0
r5 = 0
for i, c in enumerate(s):
    c = int(c)
    r3 += c
    if i%2 == 0:
        r5 += c
    else:
        r5 -= c
r3 %= 3
r5 %= 5
if r3 == 0 and r5 == 0:
    print('FizzBuzz')
elif r3 == 0:
    print('Fizz')
elif r5 == 0:
    print('Buzz')
else:
    print(n)