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 LuaJIT (2.0.4) (judge verdict: Runtime Error)

local str1 = io.read()
local str2 = io.read()

local len = (str2) - tonumber(str1)
local count = 0
for i = tonumber(str1), tonumber(str2) do
    if(tonumber(i) == tonumber(string.reverse(i))) then
        count = count + 1
    end
end
print(count)