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

class AddClient {
    public static void main( String[] args ) {
        int range = 0;
	int port = 0;
	String host = null;
	try {
	    host = args[0];
	    port = Integer.parseInt( args[1] );
            range = Integer.parseInt( args[2] );
	}
	catch( NumberFormatException e ) {
	    System.out.println("bad port number or range");
	    System.exit(0);
	}
	catch( IndexOutOfBoundsException e ) {
	    System.out.println("usage: java AddClient host port range");
	    System.exit(0);
	}

        try {
	    /* determine the address of the server and connect to it */
	    InetAddress server = InetAddress.getByName( host );
	    Socket sock = new Socket( server, port );
            DataInputStream din =
                new DataInputStream( sock.getInputStream() );
            DataOutputStream dout =
                new DataOutputStream( sock.getOutputStream() );

            /* tx size */
            dout.writeInt( range );
            /* tx ints to add */
            for( int i = 0 ; i < range; i++ ) {
                dout.writeInt( i );
            }
            dout.flush();
            /* retrieve result */
            int result = din.readInt();
            System.out.println("result is " + result );
            /* tell the server that we are done */
            dout.writeInt( -1 );
            dout.flush();
	    sock.close();
            dout.close();
            din.close();
	}
	catch( UnknownHostException e ) {
	    System.out.println("bad host name");
	    System.exit(0);
	}
	catch( IOException e ) {
	    System.out.println("io error:" + e);
	    System.exit(0);
	}
    }
}