import java.util.ArrayList;
import java.util.Collections;
import java.util.Scanner;

public class Main {
	public static void main(String[] args){
		ArrayList<String> list = new ArrayList<String>();
		Scanner sc = new Scanner(System.in);
		String s = sc.nextLine();
		sc.close();
		
		String[] str = s.split("");
		for(String a : str){
			list.add(a);
		}
		Collections.reverse(list);
		
		for(String a : list){
			System.out.print(a);
		}
		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