package no9005;

import java.io.PrintStream;
import java.io.UnsupportedEncodingException;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) throws UnsupportedEncodingException {
		Scanner sc = new Scanner(System.in,"UTF-8");
		StringBuilder sb = new StringBuilder();
		sb.append(sc.next());
		PrintStream out = new PrintStream(System.out, true, "UTF-8");
		out.println(sb.reverse().toString());
	}
}