#include<bits/stdc++.h>
using namespace std;
typedef long long ll;

signed main(){
    ios::sync_with_stdio(false);
	cin.tie(0);
 
    ll n;
    cin>>n;
    ll a=3,b=n-3;
    if(n<=5 || n==7){
        cout<<-1<<endl;
        return 0;
    }
    ll now=1;
    while(now<b){
        now*=2;
    }
    if(now!=b){
        cout<<a<<" "<<b<<endl;
    }
    else cout<<a+2<<" "<<b-2<<endl;
}