def is_power_of_two(x):

  return ((x != 0) and (x & (x - 1)) == 0);


N = int(input())
b = N-3
a = 3
while is_power_of_two (a) or is_power_of_two (b):
    b -= 1
    a += 1
    if b <= 0:
        break
if b <= 0:
    print(-1)
else:
    print(a,b)