import java.util.Scanner;
public class Main {
    public static void main (String[] args) {
	Scanner scan = new Scanner (System.in);
	String str = scan.nextLine();
	StringBuilder sb = new StringBuilder();
	for (int i = str.length()-1; i >= 0; i--) {
	    sb.append(str.charAt(i));
	}
	System.out.println(sb);
    }
}
/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