import java.util.*;
import java.io.*;

public class Main {
	public static void main(String[] args) throws Exception{
		BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
		String line = in.readLine();
		StringTokenizer tk = new StringTokenizer(line);
		String toReverse = tk.nextToken();
		char[] revArray = new char[toReverse.length()];
		for (int i = 0; i < toReverse.length(); i++) {
			revArray[toReverse.length()-1-i] = toReverse.charAt(i);
		}
		System.out.println(new String(revArray));
	}
}
/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