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-----
11009 11332

-----Sample Output-----
4

There are four integers that satisfy the conditions: 11011, 11111, 11211 and 11311.

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