Array Operations

The [H-index](https://en.wikipedia.org/wiki/H-index) of an array is defined to be the maximum integer $H$ such that there are at least $H$ elements in the array which are greater than or equal to $H$. You're given an integer array $A$ and a positive integer $K$. You can do the following operation as many times as you want (possibly, none): - Pick two indices $i$ and $j$ such that $A_i$ is divis