Oh. I'm sorry if the description causes a misunderstanding, but what I actually mean is that sculk sensors detects player action then, if there are any sculk shriekers near sculk sensors, it transports the signal to them. If the signal accumulates to 3, warden spawns. I will change the description in order to present the idea clearer. Sorry for my bad English again.

Thank you fot your additional information. A kata is not necessarily needed to follow the exact same system of minecraft. As long as the problem is alright, actual logic can be emitted.

Thank you for your advice! This will be improved soon.

My bad. There isn't a "*" when there's a parenthese.

Yes. If you persist to change the description, I will delete that line.
I've received lots of people telling me to read the Kata Authoring Guidlines, I've read it many times, ofc.
Why think this kata won't get approved without seeing others' reactions? It is a humiliation for an author to unpublish a kata by himself, after spending hours creating it.
Thank you for your suggestion. I hope to see you again. Have a nice day.

1. Yes. It's becuz you already can't use some Python modules in Codewars.
2. At first I tried to use the module "py-expression-eval" but apparently Codewars doesn't support it.
3. What's wrong with "eval"? While you have to deal with other problems except calculating strings as values, I think using "eval" is defntely okay.
4. Yes. While most of the low-level katas are similar, IMO this kata is just a higher level of summation compared to other summation katas.
   I hope you can understand it.

Thank you so much! Congrats for solving this kata successfully!

I see. The return data types are all strings now. Thanks for your help.

You are rught. The 0-9 issue has been fixed.
What's wrong with different data types?

Yes. Thanks. The issue has been resolved.