import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Scanner;

public class Server {
    public static void main(String[] args) {
        try {
            DatagramSocket datagramSocket = new DatagramSocket(1234);
            byte[] recieved_message = new byte[6000];
            DatagramPacket datagramPacket = null;
            while(true) {
                datagramPacket = new DatagramPacket(recieved_message, recieved_message.length);
                datagramSocket.receive(datagramPacket);
                String s = cast(recieved_message).toString();
                System.out.println(s);
                if(s.charAt(0) == 'E' && s.charAt(1) == 'N' && s.charAt(2) == 'D') {
                    return;
                }
                recieved_message = new byte[6000];
            }
        }
        catch (IOException i) {
            i.printStackTrace();
        }
    }
    private static StringBuilder cast(byte[] b) {
        StringBuilder s = new StringBuilder();
        for(int i = 0; i < b.length; i++) {
            s.append((char) b[i]);
        }
        return s;
    }
}