import java.util.Scanner;

public class Main {
	public static void main(String[] a){
		Scanner scn = new Scanner(System.in);
		String str = scn.nextLine();
		int len = str.length();
		for(int i = 0;i < len;i++){
		System.out.print(str.charAt(len - 1 - 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