import java.util.Scanner;

 public class Main{
	 public static void main(String[] args){
		 Scanner s = new Scanner(System.in);
		 String sc = s.next();
		 StringBuilder se = new StringBuilder(sc);
		 se.reverse();
		 System.out.println(se.toString());
		 }
	 } 
/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