ns = input()

m = len(ns)
ans = 0
for i in range(m):
    ans += int(ns[i]) * pow(4, m - i - 1, 15) % 15
    ans %= 15
if ans == 0:
    print("FizzBuzz")
elif ans % 3 == 0:
    print("Fizz")
elif ans % 5 == 0:
    print("Buzz")
else:
    print(ns)