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;
using System.Linq;
using System.Collections;
class Program
{
    public static void Main()
    {
        string[] imp = Console.ReadLine().Split(' ');
        int a, b;
        a = int.Parse(imp[0]);
        b = int.Parse(imp[1]);
        int c = 0;
        for (int i = a; i <= b; i++)
        {
            string str = i.ToString();
            int n = str.Length;
            bool f = true;

            for (int j = 0; j <= n / 2; j++)
                f = f && (str[j] == str[n - 1 - j]);

            if (f)
                c++;
        }
        Console.WriteLine(c);
    }
}