import java.util.Scanner;
public class N6 {
    public static void main(String[] args)
    {
        Scanner input=new Scanner(System.in);
        int x , n;
        x=input.nextInt();
        do {
            n= x % 10;
            x= x / 10;
            System.out.print(n);
        }while (x != 0);
    }
}