def main():
    N = input()

    three = five = 0
    for s in N:
        three = (three * 4 + int(s)) % 3
        five = (five * 4 + int(s)) % 11

    ans = ''
    if not three:
        ans += 'Fizz'
    if not five:
        ans += 'Buzz'

    if ans == '':
        print(N)
    else:
        print(ans)

main()