N = int(input())
power_of_2 = set()
i = 1
while i <= N:
  power_of_2.add(i)
  i *= 2

for a in range(1, N//2+1):
  if a not in power_of_2 and (N-a) not in power_of_2:
    print(a, N-a)
    exit()

print(-1)