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: Runtime Error)

	using System;
    class Program
    {
        static void Main(string[] args)
        {
            string[] str = Console.ReadLine().Split(' ');//2つ以上のスペース区切り入力の取得
            string aStr = str[0];  //数値で受け取りたい場合は変換する
            string bStr = str[1];


            int count = 0;

            int a = int.Parse(aStr);
            int b = int.Parse(bStr);

            for (int i = 1; i <= (b - a); i++)
            {
                int currentNum = a + i;
                string currentString = currentNum.ToString();

                char[] seiCharArray = currentString.ToCharArray();
                char[] gyakuCharArray = new char[currentString.Length];

                for (int j = 0; j < currentString.Length; j++)
                {

                    gyakuCharArray[currentString.Length - j] = seiCharArray[j - 1];

                }

                string seiString = new string(seiCharArray);
                string gyakuString = new string(gyakuCharArray);

                //Debug.Log(seiString + "," + gyakuString);

                if (seiString == gyakuString) count++;

            }


            Console.WriteLine(count);//改行付き出力
        }
    }