import java.io.*;

public class Reverse2
{
   public static void main (String[] args) throws IOException
   {
      BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
      String s;
      int c;

      System.out.print("Enter a string: ");
      reverse(in);
      System.out.println("\n\n");
   }


   public static void reverse (BufferedReader in) throws IOException
   {
       int c = in.read();

       if (c == '\n')
          System.out.println();
       else
       {
          reverse(in);
          System.out.print((char) c);
       }
   }

}