Exactly, they don't own that problem. And the description here is different.

Definitely not ( IANAL and this is not legal advice ). But copyright applies to literal description text, examples, or test code; not the task in itself. The description is different, and though I can't read Leetcode's tests, they are probably different as well.

IDK, this kata isn't as simple as the other one, but to me it still looks like a basic raw algorithm rather than something combining enough unique ideas for the idea of the task to be copirightable (as opposed to the exact text).

I don't see anything that looks copied, the same maximum length of 2*10^4 isn't much.

Note to author: it is advised to refrain from abuse of moderation tools and reporting users which raise critical, but valid remarks. If you need help creating a kata, there is whole bunch of resources at your disposal, including Codewars Discord and its #kata-ideas channel (to verify whether your idea would be welcome and is not a duplicate), #help-author channel for help with practical aspects of kata authoring, and #reviewing channel where you can ask for review of a draft of your kata before publishing.

There is also documentation with Codewars Authoring Guidelines, authoring guides for Python, and my collection of authoring examples kata on Codewars.

That kata uses a different system as mine and I had completed that kata after i had finished creating my own. Anyways, it is different from the one which I had created.

I have not seen a kata which has used a word to number translator yet. Either way, could you send the link for that?

Could you link the other kata which mine is similar to?

merge conflict resolved and approved

I understand you, I'll put my kata away

I was able to easily apply the code from this kata to solve the other kata.

Thank you) The tasks are really similar. In the first kata, time is constant, but for me it is a variable parameter. So my task is a little more difficult. But in general the differences are insignificant

I have to agree. These are very similar.

Is there anything I could change to make this not a duplicate (preferably without invalidating other solutions) or no?

nothing is more annoying than making a kata and finding out after publishing it that there already exists a similar kata