#define  _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <algorithm>
#include <utility>
#include <functional>
#include <cstring>
#include <queue>
#include <stack>
#include <math.h>
#include <iterator>
#include <vector>
#include <string>
#include <set>
#include <math.h>
#include <iostream>
#include<map>
#include <iomanip>
#include <time.h>
#include <stdlib.h>
#include <list>
#include <typeinfo>
#include <list>
#include <set>
#include <cassert>
#include<fstream>
#include <cstdlib>
using namespace std;
#define Ma_PI 3.141592653589793
#define eps 0.00000001
#define LONG_INF 3000000000000000000
#define GOLD 1.61803398874989484820458
#define MAX_MOD 1000000007
#define REP(i,n) for(long long i = 0;i < n;++i)
#define seg_size 524288
int main() {
	long long n;
	cin >> n;
	for (long long i = 1;i < n;++i) {
		long long mew = 0;
		long long ok = i;
		while (ok != 1) {
			if (ok % 2 == 1)mew = 1;
			ok /= 2;
		}
		ok = n - i;
		while (ok != 1) {
			if (ok % 2 == 1)mew |= 2;
			ok /= 2;
		}
		if (mew == 3) {
			cout << i << " " << n - i << endl;
			return 0;
		}
	}
	cout << -1 << endl;
	return 0;
}