# C問題

N = input()
l = len(N)

i = 0
check3 = 0
check5 = 0
while True:
	if i >= l:
		break
	check3 += int(N[i])
	if i % 2 == 0: 
		check5 += int(N[i])
	else:
		check5 -= int(N[i])

	i += 1

m1 = check3%3

if m1==0 and check5 == 0:
	print("FizzBuzz")
elif m1 == 0:
	print("Fizz")

elif check5 == 0:
	print("Buzz")

else:
	print(N)