import java.util.Scanner;

public class Main {
    public static void main(String[] args) {

    Scanner scan = new Scanner(System.in);
    String str;
    int s;
   
   
    str = scan.next();   
    s = str.length();
   for(int i= s-1 ; i>=0 ;i--){
       char c = str.charAt(i);
       System.out.print(c);
   }
   
   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