import java.util.Scanner;
import java.util.Date;


class Main{
    public static void main(String[] args){
	Scanner sc = new Scanner(System.in);

	String str=sc.next();

	for(int i=str.length()-1;i>=0;i--){
	    System.out.print(str.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