35. Multiples of 4
Find the count of numbers divisible by 4 in the interval [a,b].
Input
In the first line, an integer a(−1000≤a≤1000).
In the second line, an integer b(−1000≤b≤1000).
Output
A single line with the solution to the problem.
Sample input 1
0 5
Sample output 1
2
Sample input 2
6 -5
Sample output 2
3
Sample input 3
-10 10
Sample output 3
5
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