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

class Main
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Scanner scan = new Scanner(System.in);
    	String str = scan.next();

    	String[] strArraySub = str.split("");
    	int sval;
    	int val = strArraySub.length;
    	//System.out.println(val);
    	for (int i = 1; i <= val; i++) {
    		// "strArraySub"???1??????????????¨???
    		sval = val - i;
    		System.out.print(strArraySub[sval]);
    		
		}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