import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

N = [int(x) - ord('0') for x in read().rstrip()]

A = sum(N[::-1][::2])
B = sum(N[::-1][1::2])

x3 = (A + B) % 3
x5 = (A - B) % 5

if (not x3) and (not x5):
    print('FizzBuzz')
elif (not x3):
    print('Fizz')
elif (not x5):
    print('Buzz')
else:
    print(''.join(map(str,N)))