def is_power_of_two(n):
  binary = bin(n)[3:]

  for b in binary:
    if b == "1":
      return False

  return True

def main():
  N = int(input())

  a = 3
  while True:
    b = N - a

    if b <= 2:
      print(-1)
      return

    if not is_power_of_two(b):
      print(a, b)
      return

    a += 2

main()