import java.util.Scanner;

import static java.lang.Math.pow;

public class Main {

    public static void main(String args[]){
        Scanner in = new Scanner(System.in);
        int Snumb;
        int MaxNumb = 0;
        String byteNumb;
        Snumb = in.nextInt();
        byteNumb = Integer.toBinaryString(Snumb);
        byte size = (byte)byteNumb.length();
        byte[] numb = new byte[size];
        for (byte i = 1; i <= byteNumb.length(); i++){
            numb[size - i] = (byte)(byteNumb.charAt(size - i) - 48);
        }
        for (byte i = 0; i < size; i++){
            MaxNumb = max(MaxNumb, binConvert(shift(numb)));
        }
        System.out.println(MaxNumb);
    }
    public static int binConvert(byte[] binNumb){
        int numb = 0;
        byte size =(byte)(binNumb.length - 1);
        for (byte i =size; i>=0; i--){
            numb += binNumb[i] * pow(2,size - i);
        }
        return numb;
    }
    public static byte[] shift(byte[] numb){
        byte size = (byte)(numb.length);
        byte temp = numb[0];
        for(byte i = 0; i < size - 1; i++){
            numb[i] = numb[i + 1];
        }
        numb[size - 1] = temp;
        return numb;
    }
    public static int max(int a, int b){
        if (a > b)
            return a;
        return b;
    }
}