import java. util. Scanner;

public class Main{
	public static void main (String[] args){
		Scanner scanner = new Scanner (System. in);
		
		String name = scanner. nextLine();
		int k = name. length() - 1;
		for (int j = (name. length() - 1); j >= 0; j --){
			System. out. printf ("%c", name. charAt(j));
		}
		System. out. println();
		scanner. close();
	}
}