import java.io.*;

public class Exercise1 {
   
   public static void main(String[] args) throws IOException {
      InputStreamReader stream = new InputStreamReader(System.in);
      BufferedReader keyboard = new BufferedReader(stream);

      System.out.println("Please enter a string");

      String s = keyboard.readLine();

      String outputString = "";

      for (int i=s.length()-1;i>=0;i--)
         outputString = outputString.concat(s.substring(i,i+1));

      System.out.println(outputString);   
   }

}