s = input()
s1 = [ int(v) for v in list(s) ]
s2 = [ s1[i]*((-1)**(len(s)-i)) for i in range(len(s)) ]

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