def main():
    N = input()

    three = 3
    five = 11
    even = 0
    odd = 0
    i = len(N) - 1
    while i > 0:
        odd += int(N[i])
        even += int(N[i-1])
        i -= 2
    if not i:
        odd += int(N[0])

    ans = ''
    if not (odd + even) % three:
        ans += 'Fizz'
    if not (odd - even) % five:
        ans += 'Buzz'
    if ans == '':
        print(N)
    else:
        print(ans)

main()