import java.util.Scanner;

public class Main
{
	public static void main(String[] args)
	{
		String str;
		Scanner scan=new Scanner(System.in);
		str=scan.next();
		scan.close();
		for(int i=str.length()-1;0<=i;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