Mathematical Calculations: Interesting numbers

An integer is said to be interesting if the following two conditions hold true after removing all leading zeros from it:

The count of odd digits is even.

The count of even digits is odd.

You are given two integers, Land R$.$

Write a program to find the count of interesting numbers in the range $[$L$,$ R$)($L and R inclusive$).$

Example

Number $455$ is an interesting integer as:

$$ The count of odd digits is $2(5,5)$

$$ The count of even digits is $1(4)$

Function Description

In the provided code snippet, implement the provided interesting Digits $(...)$ method using the variables to print a single integer denoting the number of interesting numbers between Land R$.$ You can write your code in the space below

the phrase "WRITE YOUR LOGIC HERE".

There will be multiple test cases running so the Input and Output should match exactly as provided.

The base output variable result is set to a default value of $-484$ which can be modified. Additionally, you can add or remove these output variables.

Input Format

The first line of input contains $2$ space$-$separated integers L and R$.$

Sample Input

$19$

denotes L & R separated by a space

Constraints

$1<=$ L $<=$ R $<=1018$

Output Format

The output contains a single integer denoting the number of interesting numbers between Land R$.$

Sample Output

$4$

Explanation

The interesting numbers between Land R$.($L and R inclusive$)$

are:

$2,4,6,8$ as they appear $1($i$.$e$.,$ odd number of times$)$ time and are themselves an even number.

Hence, the output is $4.$