	import java.io.*;
    import java.util.Scanner;
     
    public class Main {
    	public static void main (String[] args) throws IOException
    {
 		BufferedReader br 
   		= new BufferedReader(new InputStreamReader(System.in));
			String str = br.readLine();
    	
    		for(int i=str.length()-1; i >= 0; i-- ){
    			System.out.print(str.charAt(i));
    		}
    		System.out.println();
    	}
    }
     
/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