#include <bits/stdc++.h>
#include "bits/stdc++.h"
#include <iostream>
#include <iomanip>
#include <vector>
#include <algorithm>
#include <string>
#include <sstream>
#include <cmath>
#include <stack>
#include <queue>
#include <cctype>
#include <stdio.h>
#include <map>
#include <unordered_map>
#include <string.h>
#include <utility>

typedef long long ll;

#define rep(i,n) for(ll i=0;i<(ll)(n);i++)
using namespace std;

typedef pair<int, int> P;

int main() {

	ll n = 0;
	cin >> n;

	/*
	 for(int i=1; i<=10; i++){
	 if(!check[i]){
	 cout<<i<<endl;
	 }
	 }
	 */

	for (int i = 1; i <= n / 2; i++) {
		if ((i & i - 1) == 0 || i == 1) {
			continue;
		}
		if ((n - i & n - i - 1) != 0) {
			cout << i << " " << n - i << endl;
			return 0;
		}

		/*cout<<i<<endl;*/
	}

	cout << -1 << endl;

}