N = input()[::-1]
three = 0
five = 0
power3 = 1
power5 = 1
for i in range(len(N)):
    three += power3 * int(N[i])
    three %= 3
    five += power5 * int(N[i])
    five %= 5
    power3 *= 4
    power3 %= 3
    power5 *= 4
    power5 %= 5
if three == 0 and five == 0:
    print('FizzBuzz')
elif three == 0:
    print('Fizz')
elif five == 0:
    print('Buzz')
else:
    print(N[::-1])