#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0;i<(int)(n);i++)
template<class T> inline bool chmax(T&a,T b){if(a<b){a=b;return 1;}return 0;}
template<class T> inline bool chmin(T&a,T b){if(a>b){a=b;return 1;}return 0;}
using ll = long long;

ll n,a,b;

bool check(ll x){
    while(x%2==0) x/=2;
    return x!=1 ? true : false;
}

void solve(){
    for(int i=1;i<n;i++){
        if(check(i) && check(n-i)){
            a=i, b=n-i;
            return;
        } 
    }       
}

int main(){
    ios::sync_with_stdio(false); 
    cin.tie(0);

    cin >> n;
    solve();
    if(a) cout << a << " " << b << endl;
    else cout << -1 << endl;
}