import java.util.Scanner;

public class Main {
	public static void main(String arges[]){
		String p;
		Scanner sc = new Scanner (System.in);
		p = sc.next();
		int len = p.length();
		for(int i=len-1; i>=0;i--){
				System.out.print(p.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