import java.util.Scanner;


public class Main {


	public static void main(String[] args) {
		Scanner stdIn = new Scanner(System.in);
		String moji = stdIn.next();
		stdIn.close();
		
		for (int i = (moji.length() - 1); i >= 0; i--) {
			System.out.print(moji.charAt(i));
		}
		System.out.println();
}
}
/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