N = input().strip()
Ni = N[::-1]
K = len(N)
cnt3 = 0
cnt5 = 0
for i in range(K):
    cnt3 = (cnt3+int(Ni[i]))%3
    if i%2==0:
        cnt5 = (cnt5+int(Ni[i]))%5
    else:
        cnt5 = (cnt5+4*int(Ni[i]))%5
if cnt3==0 and cnt5==0:
    print("FizzBuzz")
elif cnt3==0:
    print("Fizz")
elif cnt5==0:
    print("Buzz")
else:
    print(N)