import java.util.*;
 
public class Main{
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while (sc.hasNext()) {
            int n = sc.nextInt();
            if (n > 1000) {
                n = 999;
            }
            List<Integer> list = new ArrayList<Integer>();
            for (int i = 0; i < n; i++) {
                list.add(i);
            }
            int i = 0;
            while (list.size() > 1) {
                i = (i + 2) % list.size();
                list.remove(i);
            }
            System.out.println(list.get(0));
        }
    }
}

public class Main{
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while (sc.hasNext()) {
            int n = sc.nextInt();
            if (n > 1000) {
                n = 999;
            }
            int last = 0;
            for (int i = 2; i <= n; i++) {
                last=(last+3)%i;
            }

            System.out.println(last);
        }
    }
}