using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;

namespace ConsoleApplication {
    internal class Program {
        public static void Main(string[] args) {
            var word = "mappm";
            var s =  new Stack<char>();
            for (int i = 0; i < word.Length / 2; i++) {
                s.Push(word[i]);
            }
            var isPalindrome = true;
            for (int i = (int) Math.Ceiling((double) word.Length / 2); i < word.Length; i++) {
                if (word[i] != s.Pop()) {
                    isPalindrome = false;
                    break;
                }
            }
            if (isPalindrome)
                Console.WriteLine(word + " is palindrome");
            else {
                Console.WriteLine("Failya!!");
            }
        }
    }
}