Problem:
Score : 200 points

Problem Statement

Find the number of palindromic numbers among the integers between A and B (inclusive).
Here, a palindromic number is a positive integer whose string representation in base 10 (without leading zeros) reads the same forward and backward.

Constraints

10000 \leq A \leq B \leq 99999

All input values are integers.

Input

Input is given from Standard Input in the following format:

A B

Output

Print the number of palindromic numbers among the integers between A and B (inclusive).

Sample Input 1

11009 11332

Sample Output 1

4

There are four integers that satisfy the conditions: 11011, 11111, 11211 and 11311.

Sample Input 2

31415 92653

Sample Output 2

612

Solution in C# (Mono 4.6.2.0) (judge verdict: Accepted)

using System;

namespace ABC090
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] hoge = Read().Split(' ');
            var a = int.Parse(hoge[0]);
            var b = int.Parse(hoge[1]);
            var cnt = 0;
            for(int i = a; i <= b; i++)
            {
                var str = i.ToString();
                if (str[0] == str[4] && str[1] == str[3]) cnt++;
            }


            Console.WriteLine(cnt);
         }

        public static string Read() { return Console.ReadLine(); }
    }
}