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.Collections;
using System.Collections.Generic;
using System.Text;


public class B
{
	public static void Main()
	{
		string[] args = Console.ReadLine().Split(' ');
		int A = Int32.Parse(args[0]);
		int B = Int32.Parse(args[1]);
		int ans = 0;
		for(int i = A; i <= B; i++)
		{
			int[] d = new int[5];
			int tmp = i;
			for(int j = 0; j < 5; j++)
			{
				d[j] = tmp % 10;
				tmp /= 10;
			}
			if((d[0] == d[4]) && (d[1] == d[3]))
				ans++;
		}
		Console.WriteLine(ans);
	}
}