#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(i, n) for(ll i = 0, i##_len = (n); i < i##_len; i++)
#define reps(i, s, n) for(ll i = (s), i##_len = (n); i < i##_len; i++)
#define rrep(i, n) for(ll i = (n) - 1; i >= 0; i--)
#define rreps(i, e, n) for(ll i = (n) - 1; i >= (e); i--)
#define all(x) (x).begin(), (x).end()
#define sz(x) ((ll)(x).size())
#define len(x) ((ll)(x).length())

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    // ifstream in("input.txt");
    // cin.rdbuf(in.rdbuf());
    ll n;
    cin >> n;
    if (n < 6) {
        cout << -1 << endl;
        return 0;
    }
    if (n == 6) {
        cout << "3 3" << endl;
        return 0;
    }
    set<ll> two;
    ll cur = 1;
    while(cur < n) {
        two.insert(cur);
        cur *= 2;
    }
    ll b = n - 3;
    ll a = 3;
    while(a < b) {
        if ((two.count(a) == 0) && (two.count(b) == 0)) {
            cout << a << " " << b << endl;
            return 0;
        }
        a++;
        b--;
    }
    cout << -1 << endl;
    return 0;
}