using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Threading;
using System.IO;
using System.Collections;

namespace ConsoleApplication5
{
    class Program
    {
        static void Main(string[] args)
        {
            int lastPalindromes = 0;
            for(int x = 100; x < 999; x++)
            {
                for (int y = 100; y < 999; y++)
                {
                    int mul = x * y;
                    if (isPalindromes(mul))
                    {
                        lastPalindromes = mul;
                    }
                }
            }
            Console.WriteLine(lastPalindromes);
            Console.ReadLine();
        }

        static bool isPalindromes(int integer)
        {
            string s_i = integer.ToString();
            string s2_i = new string(s_i.Reverse().ToArray());
            return s_i == s2_i;
        }
    }
}