#include <iostream>

using namespace std;

int main() {
  unsigned long long int N;
  cin >> N;
  for(unsigned long long int i = 1; i < N; i++) {
    unsigned long long int j = N - i;
    if ((i & (i - 1)) != 0 && (j & (j - 1)) != 0) {
      cout << i << " " << j << endl; 
      return 0;
    } 
  }
  cout << -1 << endl;
  return 0;
}