when you want to solve a problem, better way is using the fundamentals of the language not the built-in function.

You can show us your error.

Guys, when it comes to Math or Geometry specillay, you should take a short look of this concept on google to rich your bg about it.
this video explaining the provment way: https://youtu.be/egHYp65nuUQ

Agree, when a Kata is related to Math or Geometry you should take a short class about it. GL sir.

yep, you should active it when it necessary. bro can you give an advice to become a solver problems !!.thanks in advance.

I must be too stupid to understand the problem.

Agree, my speech was a result of what happend in the comments below. actually the kata(s) of PG1 - with all respects to them - is lacked of comprehension and he doesn't apply the principle of DRY. thanks bro.

but why

I see two things that can be changed:

To make it easier... as you do the mental calculations in the water you either freeze when you realise you are dead, or swim when you realise you can make it!

that's redundant, and, halve is misspelled.

I'm guessing you mean something completely different, but how would anyone know what you're thinking when you don't say?

Debugging depending on 'switch' concept. o~O

Hey PG1, please rephrase the description and parameters. GJ.

Actually I wanter to take my hat off for your 'out of the box thinking'. that ++k is a black magic. congratz.!!

hey mr, can you give me a single advice to become a solver problems.Thanks