#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  if (n % 4 == 0)
    cout << (n / 2) - 1 << " " << (n / 2) + 1;
  else if (n % 2 == 0) {
    cout << (n / 2) - 2 << " " << (n / 2) + 2;
  } else
    cout << (n / 2) << " " << (n / 2) + 1;
  return 0;
}
