Ok, unfortunately, I went and looked for the solution (to the first one).
Not exactly neat or orderly, and the explanations I saw on YouTube were horrible in terms of presentation, so what I will do later is present the solution here (under Spoilers) in a "clean" way in stages.
Not exactly neat or orderly, and the explanations I saw on YouTube were horrible in terms of presentation, so what I will do later is present the solution here (under Spoilers) in a "clean" way in stages.
