import java.io.*;
import java.lang.*;


public class Main {
	public static void main(String[] args)  throws IOException
	{
	    BufferedReader buf = new BufferedReader(new InputStreamReader(System.in));
	    StringBuffer s = new StringBuffer(buf.readLine());
	    String sun = s.reverse().toString();
	    System.out.println(sun);
	}
		
}
/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