#coding: utf-8

def main():
  n4 = int(input())
  print(fizzbuzz(four2ten(n4)) if fizzbuzz(four2ten(n4)) else n4)
  

def four2ten(n4):
  if n4 <= 3:
    return n4
  else:
    l = list(map(int, str(n4)))
    a = 0
    for i in range(len(l)-1):
      a += l[i]
      a *= 4
    b = int(l[-1])
    return int(a+b)

def fizzbuzz(i):
  if i % 15 ==0:
    return 'FizzBuzz'
  elif i % 3 == 0:
    return 'Fizz'
  elif i % 5 == 0:
    return 'Buzz'
  else:
    return None


if __name__ == '__main__':
  main()