#include<bits/stdc++.h>
using namespace std;
#define int long long
#define vi vector<int>
#define vvi vector<vi>
#define vs vector<string>
#define pb push_back
#define P pair<int,int>
#define vp vector<P>
#define PP pair<int,P>
#define vpp vector<PP>
#define fi first
#define se second
#define INF 1e9
#define MOD 1000000007
#define REP(i,n) for(int i=0;i<n;i++)
#define REPR(i,n) for(int i=n;i>=0;i--)
#define FOR(i,m,n) for(int i=m;i<n;i++)
#define all(x) (x).begin(),(x).end()
signed main(){
    int n;
    cin>>n;
    int a=1;
    set<int> se;
    REP(i,61){
        se.insert(a);
        a*=2;
    }
    FOR(i,1,n){
        int p=i;
        int q=n-i;
        if(!se.count(p)&&!se.count(q)){
            cout<<p<<" "<<q<<endl;
            return 0;
        }
    }
    cout<<-1<<endl;
    return 0;
}