Given L , R ( 1<=L,R <= 1000000000000000000) . Count the numbers in [L,R] such that each number satisfies two properties :
1. The total count of odd digits are even
2. The total count of even digits are odd
Note – Do not consider zero in MSB position
The numbers that satisfy both the properties are 2,4,6,8 . In each of these numbers , the count of odd digits are even (i.e 0 ) and count of even digits are odd (i.e 1 ).