#include <bits/stdc++.h>
using namespace std;
const int N = 100000;
int main(int argc, char const *argv[]) {
  int n;
  cin >> n;
  if (n % 2 == 1)
    cout << n / 2 << " " << n / 2 + 1;
  else if (n % 4 == 0)
    cout << n / 2 - 1 << " " << n / 2 + 1;
  else
    cout << n / 2 - 2 << " " << n / 2 + 2;
  return 0;
}
