N = input()
S = list(map(int,list(N)))

a = sum(S)
ans = ""
if a % 3 == 0:
    ans += 'Fizz'
b = 0
for i in range(len(S)):
    j = S[-i-1]
    if i & 1 == 0:
        b += j
    else:
        b -= j
if b % 5 == 0:
    ans += 'Buzz'
if ans == "":
    print(N)
else:
    print(ans)