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 static System.Console;
using static System.Convert;

class Program
{
    static void Main(string[] args)
    {
        var input = ReadLine().Split(' ');
        var min = ToInt32(input[0]);
        var max = ToInt32(input[1]);
        var result = 0;
        for(var i = min; i <= max; i++)
        {
            var num = i.ToString();
            var isMatch = true;
            for(var j = 0; j < num.Length / 2; j++)
            {
                if (!(num.Substring(j, 1) == num.Substring(num.Length - 1 - j, 1))) { isMatch = false;break; }
            }
            if (isMatch) result++;
        }
        WriteLine(result);
    }
}