/**
 *  Code by: Faiz Ikhwan Bin Mohd Rafhan Syamil
 *  2016647102
 *  CS2304B
 *  Date: 14 May 2018
 *  Due Date: 21 May 2018
 */
import java.util.Stack;
import java.util.Scanner;

public class CreateAPalindrome
{
    public static void main(String[] args) {
        Stack<Character> stack1 = new Stack<Character>(); //create stack
        Scanner input = new Scanner(System.in);
        String res = "";

        System.out.println("Please enter a word: ");
        String inp = input.next();

        for (int i = 0; i < inp.length(); i++)
            stack1.push(inp.charAt(i));


        while (!stack1.empty())
        {
            Character b = stack1.pop();
            inp += b.charValue();
        }

        System.out.println(inp);
    }
}