# B

N = int(input())

if N <= 5:
    print(-1)
    quit()
if N == 6:
    print(3, 3)
    quit()
if N == 7:
    print(-1)
    quit()

if N % 2 == 0:
    print(3, N-3)
    quit()

if N-3 & (N-4):
    print(3, N-3)
else:
    print(5, N-5)