import java.io.*;
public class Main {
   public static void main(String[] args) throws IOException{
	   BufferedReader buf = new BufferedReader(new InputStreamReader(System.in));
	   String str;
	   StringBuffer s = new StringBuffer("");
	   str = buf.readLine();
	   s.append(str);
	   s.reverse();
	   System.out.println(s);
   }
}
/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