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

public class Main {
	public static void main(String[] args)
	        throws IOException {
		BufferedReader br = new BufferedReader(
		        new InputStreamReader(System.in));
		char[] c = br.readLine().toCharArray();
		for (int i = c.length - 1; i >= 0; i--) {
			System.out.print(c[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