#include <bits/stdc++.h>

using namespace std;

#define REP(i,n) for(int i=0; i<(int)(n); i++)

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

  long long n;
  cin >> n;

  set<long long> bs;
  for (long long i = 1; i <= n; i *= 2) {
    bs.insert(i);
  }
  
  for (long long a = 1; a < n; a++) {
    long long b = n-a;
    if (!bs.count(a) && !bs.count(b)) {
      cout << a << " " << b << endl;
      return 0;
    }
  }
  cout << -1 << endl;
  
  return 0;
}