That's the initial solution that the author put, but obviously it has more than 1 semicolon, so you have to rewrite it.

For some reason, sometimes when I try to train solution is already written. I don't know how they get there. Could you tell me how to fix or who could help me?

poor mathematics, great

That was a really fun kata. Thanks for letting me dig out my university knowlegde of boolean algebras from 12 years ago.

I am in the same situation now. Do you have any tip on what to look out for?

Edit: After posting the spoilers from moonberry where revealed. It was indeed related to limit and suppress

I've reverted that change.

And that's not abusing the system? You're not consistent, here.

because ofc, Voile knows better. For sure, yeah. Maybe you're the one who's disagreeing with others, there. So far, that's the case. So stop the crap, thx.

Please don't artificially deny some rankings to be chosen by others by intentionally adjusting the estimated kata rank. That's really abusing the system. (And if you want it to be approved at a specific rank you can just ask B4B or some other PUs personally to rank it whatever you like. Not like it is any less dodgy but at least you aren't jumping hoops...) I've reverted that change.

Also @B4B if you don't agree with that ranking, then leave the kata there and wait for more ranking votes? 5 ranking votes is not that much.

added more details to the description and bumped up the kyu

updated

6 kyu implementation difficulty and 5 kyu domain knowledge

...Which should obviously make it 5, not 6...

it's just for convenience

I think probably I'll just make the random tests fail-fast so that only one big error is displayed instead of 100. I'll also make the early random tests smaller so that you don't have to parse through a 20-variable example to figure out what went wrong

I would have given this 5.5 kyu and just rounded down to 6, rationale being that it's 6 kyu implementation difficulty and 5 kyu domain knowledge

I would agree with 6kyu if you could brute force it.

I find it baffling that your first reaction to the kata is to write a complicated brute-force search algorithm instead of a 0th-order solution. myjinxin katas are probably all 5kyu to you too then.