

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main{

	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String str = br.readLine();
		
		System.out.println(reverse(str));
	}

	public static String reverse(String source) {
		StringBuffer dest = new StringBuffer();
		for (int i = source.length() - 1; i >= 0; i--) {
			dest.append(source.charAt(i));
		}
		return dest.toString();
	}
}
/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