#include <iostream>
#define int long long
using namespace std;

int n;

int bitCnt(int a) {
	int ret = 0;
	for (int i = 60; i >= 0; i--) {
		if ((a >> i) & 1) ret++;
	}
	return ret;
}

signed main() {
	cin >> n;
	
	for (int a = 1; a < n; a++) {
		int b = n - a;
		if (bitCnt(a) != 1 && bitCnt(b) != 1) {
			cout << a << " " << b << endl;
			return 0;
		}
	} 
	cout << -1 << endl;
	return 0;
}