N = list(input())
cnt3, cnt5 = 0, 0
pm = 1
for i in range(len(N)):
    n = int(N[i])
    cnt3 += n
    cnt5 += n * pm
    pm *= -1
cnt3 %= 3
cnt5 %= 5
if cnt3 == 0 and cnt5 == 0:
    print("FizzBuzz")
elif cnt3 == 0:
    print("Fizz")
elif cnt5 == 0:
    print("Buzz")
else:
    print("".join(N))