N = str(input())
ten = 0

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