import java.io.*;
import java.net.*;
import java.util.Vector;
public class Jututuba{
  public static void main(String argumendid[]) throws IOException{
    ServerSocket ss=new ServerSocket(3001);
    Vector uhendused=new Vector();
    while(true){
      Socket sc=ss.accept();
      uhendused.add(sc);
      new JututoaLoim(sc, uhendused);
    }
  }
}

class JututoaLoim extends Thread{
  Vector v;
  Socket sc;
  public JututoaLoim(Socket uus_sc, Vector uus_v){
    v=uus_v;
    sc=uus_sc;
    start();
  }
  public void run(){
    try{
      BufferedReader sisse=new BufferedReader(
        new InputStreamReader(sc.getInputStream())
      );
      boolean veel=true;
      while(veel){
         String rida=sisse.readLine();
         System.out.println(rida);
         if(rida.startsWith(".ots"))veel=false;
         for(int i=0; i<v.size(); i++){
           Socket skt=(Socket)v.elementAt(i);
           PrintWriter valja=new PrintWriter(skt.getOutputStream(), true);
           valja.println(rida);
         }
      }
      sc.close();
    } catch(Exception e){
      System.out.println("Probleem: "+e);
    }
    v.remove(sc);
  }
}