import java.util.*;
import java.lang.*;

class Main
{
	public static void main (String[] args) throws java.lang.Exception
	{
    	Scanner in = new Scanner(System.in);
		
		String input = in.next();
		String output = new String("");
		
		for(int i = input.length() - 1; i >= 0; i--){
			output = output.concat(input.substring(i, i+1));
		}

		System.out.println(output);		
	}
}
/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