[Zvez]

> People memorize leetcode and think they're gods of CS how fast you go from 'all levels below gold' to this while probably such people do exist (never actually met someone who tried to memorize concrete solutions), they have nothing to do with competitive programming. Because you won't go far with bunch of memorized (and not understood) solutions of previous competitions. Even learning basic algorithm's implementations won't get you too high in competitions. Because you actually have to understand different approaches to actually be able to solve new problems.

> A guy who is generally good at CS or math can't show up and do wel

this is also not true. While you won't get like first places without practice, you still will be able to solve basic problems (if your cs degree has any substance behind it). And during interview it certainly shows. Nobody will give you hard problems which you can solve only by having some very specific knowledge of this particular problem. If you don't know some algorithm by hard but still can work out some approach using you background knowledge, you will pass almost any interview.