import java.util.*;

public class Main {
	public static void main(String[] args) {

		//input
		Scanner sc = new Scanner(System.in);
		String s,r = "";
		s = sc.next();
        for(int i=s.length()-1;i>=0;i--){
        	 r += String.valueOf(s.charAt(i));
        }
		
         //output
         System.out.println(r);
	}
}
/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