N = input()
X = [int(s) for s in N]
ret = ""
if sum(X) % 3 == 0:
    ret = ret + "Fizz"
tmp = 0
for i in range(len(N)):
    if i % 2 == 0:
        tmp += X[i]
    else:
        tmp -= X[i]
if tmp % 5 == 0:
    ret = ret + "Buzz"
if ret == "":
    print(N)
else:
    print(ret)