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 Python (3.4.3) (judge verdict: Accepted)

a, b = map(int, input().split())

result = 0
for i in range(a, b + 1):
    i_str = str(i)
    idx_of_half = len(i_str) // 2
    first_half = i_str[:idx_of_half]
    if len(i_str) % 2 != 0:
        idx_of_half += 1
    second_half = i_str[idx_of_half:]

    if first_half == second_half[::-1]:
        result += 1

print(result)