You are given an array of $n$ integers. Your task is to calculate the number of inversions in each window of $k$ elements, from left to right.
An inversion is a pair of elements where the left element is larger than the right element.
The first line contains two integers $n$ and $k$ : the number of elements and the size of the window.
Then there are $n$ integers $x_1,x_2,\ldots,x_n$ : the contents of the array.
Print $n-k+1$ values: the numbers of inversions.
8 3 1 2 3 2 5 2 4 4
· \n · · · · · · · \n
0 1 1 1 2 0
· · · · · \n