N = int(input())
for i in range(2,min(100,N)):
    if i in [1,2,4,8,16,32,64]:
        continue
    st = 1
    res = N-i
    flg = 1
    for k in range(100):
        p = pow(2,k)
        if p > res:
            break
        if p == res:
            flg = 0
            break
    if flg:
        print(i,res)
        exit()
print(-1)