import java.util.*;
import java.net.*;
import java.io.*;

class Sock{
    public static String getFlag(String hostName, Integer port){
        byte[] data = new byte[20];
        try{
            Socket socket = new Socket(hostName, port);
            socket.getInputStream().read(data, 0, 20); //0 to indeks gdzie zaczynay,
            socket.close();
        }
        catch(IOException e){
            System.out.println(e);
        }

        return new String(data, 0, 20);
    }
}

class Main
{
    public static void main(String[] args)
    {
        Scanner scan = new Scanner(System.in);
        Integer port = scan.nextInt();

        System.out.println(Sock.getFlag("127.0.0.1", port)); //wyprintuje SUCCESS

    }
}