import java.util.*;
import static java.lang.System.*;

public class Main {

	Scanner sc = new Scanner(in);
	
	String reverse(String s) {
		String ans = "";
		int len = s.length();
		for (int i = 0; i < len; i++)
			ans += s.charAt(len-i-1);
		return ans;
	}
	
	void run() {
		String s = sc.nextLine();
		out.println(reverse(s));
	}
	
	public static void main(String[] args) {
		new Main().run();
	}

}
/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