import java.util.Scanner;


public class Main {
	public static void main(String args[])
	   {
	      String x,y;
	      x="";
	      y="";
	      Scanner in = new Scanner(System.in);
	      x = in.nextLine();
	 
	      int l = x.length();
	 
	      for ( int i = l - 1 ; i >= 0 ; i-- )
	         y = y + x.charAt(i);
	 
	      System.out.println(y);
	   }}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz