import java.net.*;
import java.io.*;
class WHWWW
{
   public static void main(String[] argv) throws IOException
   {
      try {
      URL                  u = new URL(argv[0]);
      URLConnection        uC = u.openConnection();
      BufferedInputStream  ins = (BufferedInputStream)uC.getContent();
      InputStreamReader    isr = new InputStreamReader(ins);
      BufferedReader       br = new BufferedReader(isr);

      String s = br.readLine();
      if (s.indexOf("404") >= 0 || s.indexOf("403") >= 0)
      // 404 means page doesn't exist, 403 means page is not readable
          System.out.println("bad");
      else
          System.out.println("good");
      } catch (Exception e) {
         System.out.println("something is wrong with the network");
      } // end of try-catch
   } // main
} // WHWWW