s = input()

ls = len(s)

s3 = 0
s5 = 0

for i in range(ls):
	s3 += int(s[i])
	s5 += int(s[i])
	s5 *= -1


ans = ""
if s3%3 == 0:
	ans += "Fizz"
if s5%5 == 0:
	ans += "Buzz"
if ans == "":
	ans = s
print(ans)