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 Perl (v5.18.2) (judge verdict: Accepted)

sub isParaStr{
    my $str = $_[0];
    my $Lh = int length($str)/2;
    substr($str, 0, $Lh) eq reverse substr($str, -$Lh);
}

sub main{
    (my $s, my $e) = split(/ /, <STDIN>);
    my $cnt = 0;
   for (; $s <= $e; $s++){
       if (&isParaStr($s)){
           $cnt++;
       }
   } 

   print $cnt."\n";
}

&main;