Description updated.

So what was the instruction in the end?

I'm not sure if you can propose an edit when Kata is out of beta. I guess you can put it here. Then I can edit it.

Thanks for your feedback!

Could you be more precise?

Definitely not a benefit; it is just that writing one-liners (if you bother following me you will see I have written a lot of them at least in Python) forces me to do things in a harder way, thus it is just a better learning experience for me and, possibly, for whoever reads my code :)

Thanks for taking your time to read it and leave a comment :)