N = [int(i) for i in input()]

F = sum(N) % 3 == 0
B = (sum(N[::2]) - sum(N[1::2] + [0])) % 5 == 0

if F and B:
    print('FizzBuzz')
    
elif F:
    print('Fizz')
    
elif B:
    print('Buzz')
    
else:
    print(*N, sep='')