#include <bits/stdc++.h>
using namespace std;
using i64 = long long;
#define rep(i,s,e) for(int (i) = (s);(i) <= (e);(i)++)

int main(){
  i64 N;
  cin >> N;
  if(N == 6){
    cout << 3 << " " << 3 << endl;
    return 0;
  }
  if(N <= 7){
    cout << -1 << endl;
    return 0;
  }
  if(__builtin_popcount(N - 3) != 1){
    cout << 3 << " " << N - 3 << endl;
  }
  else{
    cout << 5 << " " << N - 5 << endl;
  }
}