n = input().strip()

mod3 = 0
mod5 = 0

for c in n:
    d = int(c)
    mod3 = (mod3 * 4 + d) % 3
    mod5 = (mod5 * 4 + d) % 5

if mod3 == 0 and mod5 == 0:
    print("FizzBuzz")
elif mod3 == 0:
    print("Fizz")
elif mod5 == 0:
    print("Buzz")
else:
    print(n)