// $ java Actualizador <Servidor precio> <puerto escucha de este servidor>
import java.net.*;
import java.io.*;
import java.util.Scanner;

public class Actualizador {
  public static void main(String[] args) throws IOException {
    int port=Integer.parseInt(args[1]);
    Socket socket = new Socket(args[0], port);
    Scanner in = new Scanner(System.in);
    try {
      PrintWriter out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(
                                                            socket.getOutputStream())),true);
      while(true) {
        double precio = in.nextDouble();
        if (precio < 0) System.exit(0);
        out.println(precio);
      }
    } finally {
      System.out.println("closing...");
      socket.close();
    }
  }
}