#include <bits/stdc++.h>
#define rep(i,n)for(int i=0;i<(n);i++)
using namespace std;
typedef long long ll;

int main(){
	ll n;cin>>n;
	for(ll i=1;i<n;i++){
		ll a=i,b=n-i;
		if(__builtin_popcountll(a)==1||__builtin_popcountll(b)==1)continue;
		cout<<a<<' '<<b<<endl;
		return 0;
	}
	puts("-1");
}