import sys
input=lambda: sys.stdin.readline().rstrip()
N=input()
n1,n2=0,0
sig=1
for n in N:
  n1+=int(n)
  n2+=sig*int(n)
  sig*=-1
if n1%3==0:
  if n2%5==0:
    print("FizzBuzz")
  else:
    print("Fizz")
elif n2%5==0:
  print("Buzz")
else:
  print(N)