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

public class Main {

	/**
	 * AOJ 0006 Reverse Sequence
	 */
	public static void main(String[] args) throws IOException {
		BufferedReader bufferedReader = new BufferedReader(
				new InputStreamReader(System.in));

		String input = bufferedReader.readLine();
		StringBuilder builder = new StringBuilder();
		for (int i = input.length() - 1; i >= 0; i--) {
			builder.append(input.charAt(i));
		}
		System.out.println(builder);
	}
}
/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