import java.util.Scanner;

public class Main {
	private static Scanner scan;
	public static void main(String[] args) {
		scan = new Scanner(System.in);
		String str = scan.next();
		int l = str.length();
		String rts ="";
		for(int i = l -1;i >= 0 ;i--){
			rts = rts + str.charAt(i);
		}
		System.out.println(rts);
		System.exit(0);
	}
}
/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