import java.util.Scanner;

/**
 * Created by Reopard on 2014/05/06.
 */
public class Main {
    public static void main(String args[]) {
        Scanner scanner = new Scanner(System.in);
        String line = scanner.next();
        char tmp[] = line.toCharArray();
        char answer[] = new char[20];
        for(int i = 0; i < tmp.length; i++) answer[i] = tmp[tmp.length-(i+1)];
        line = String.valueOf(answer);
        System.out.println(line);
    }
}
/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