Permuting Arrays

I don't really understand mathematical notation, so reading some of these challenges, is, well - challenging.

So I asked chatGPT for some help understanding the intention.

What You Need to Do:

Understand the requirement:

You have two arrays, A and B, of equal length.
You also have a number k.
You need to check if you can rearrange A and B so that for every index i, the sum of the elements from both arrays at > that index is at least k (i.e., A'[i] + B'[i] ≥ k for all i).
Figure out a strategy to achieve this:

Since you're allowed to reorder the arrays, you should think about how to pair elements from A and B to maximize your chances of meeting the condition.

Decide the output:

If you can successfully form valid pairs for all indices, print "YES".
Otherwise, print "NO".

Closes #31