N = input()

t3 = 1
three = 0
t5 = 1
five = 0
for n in N[::-1]:
    n = int(n)
    three += t3 * n
    five += t5 * n
    three %= 3
    five %= 5
    t3 *= 4
    t3 %= 3
    t5 *= 4
    t5 %= 5

if three == 0:
    if five == 0:
        print("FizzBuzz")
    else:
        print("Fizz")
elif five == 0:
    print("Buzz")
else:
    print(N)