s = input()
s1 = [ int(v) for v in list(s) ]

s2 = sum(s1[::2]) - sum(s1[1::2])

ans = ""
if  sum(s1) % 3 == 0:
    ans += "Fizz"
if  s2 == 0:
    ans += "Buzz"
if ans == "":
    print(s)
else:
    print(ans)