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

class EchoClient
{
    public static void main(String[] args) throws IOException
    {
	Socket t = new Socket(args[0], 8189); //8189 is chosen by the programmer
	String str;

	DataInputStream is = new DataInputStream(t.getInputStream());
	PrintStream out = new PrintStream(t.getOutputStream());
	DataInputStream in = new DataInputStream(System.in);

	System.out.println("Hello! Enter BYE to exit.\r");
	boolean more = true;
	while (more)
	{
	    System.out.println("type in a line : ");
	    str = in.readLine();
	    if ((str != null) && !(str.trim().equals("BYE")))
	    {
		out.println(str);
		str = is.readLine();
		System.out.println(str);
	    }
	    else
		more = false;
	}  // while
    }  // main
}