#include <iostream>
using namespace std;

int main(){
    long N;
    cin >> N;
    for(long i = 1; i < N; i++){
        if((i & -i) != i && ((N - i) & -(N - i)) != N - i){
            cout << i << " " << N - i << endl;
            return 0;
        }
    }
    cout << -1 << endl;
}