@Tanvir47 no hard feelings!

If you really want to improve, I would suggest taking courses (lots of good stuff is available online free of charge), reading the documentation and technical literature, and most importantly - trying out the new concepts you have just learned by making projects.

If you're really interested in making efficient code, you should check out a Data Structures and Algorithms (DSA) course. I'm sorry, I can't give you any actual recommendations on those - most of the stuff I used and loved is in my native tongue.

By the way, both your solution and natro23's has the same time complexity, O(n).

im a teen

whats the best way to reach higher levels then have been using website sometimes for past 2 weeks i have reached almost 1.1k honor

That's bad advice to be honest. You don't become a "pro" by asking AI to do stuff for you, in my opinion, LLMs only ruin your training.

no idea tbh i dont remember started learning python and coding prob 2 weeks ago max

Hi, thanks for your comment. I'll keep it in mind for the future.

ye bro, but it's not efficient enough

bro just don't post code without a spoiler flag

i added the flag to your comment yo