Not OP, but in my experience, it always takes more time than the time limit, either because they've just generally misjudged or because I spent the allotted tim

Not OP, but in my experience, it always takes more time than the time limit, either because they've just generally misjudged or because I spent the allotted time, did the case, and then through doing all the work came to some realizations about ways I could have done it better. Then I'm left with the option to either submit something that I know has flaws or spend more time updating it. I don't know about you, but I just hate submitting something that I feel is worse than my abilities, so I end up redoing it and spending much more time.