def f(s,x):
    r = 0
    for i in map(int,s):
        r = (r*4+i)%x
    return r==0

s = input()
x3 = f(s,3)
x5 = f(s,5)
if x3 and x5:
    print("FizzBuzz")
elif x3:
    print("Fizz")
elif x5:
    print("Buzz")
else:
    print(s)