import java.io.*;
import java.net.*;
import java.util.*;
public class ChatServer {
    public static void main(String[] args) throws IOException {
        ServerSocket server = new ServerSocket(2343);
        while (true) {
            Socket sock = server.accept();
            Scanner in = new Scanner(sock.getInputStream());
            PrintStream out = new PrintStream(sock.getOutputStream());
            while (true) {
                System.out.println(in.nextLine());
                out.println(new Scanner(System.in).nextLine());
            } 
        }
    }
}