We try to grade with perfect accuracy. But, of course, we are only human. Mistakes happen and need to be corrected.
First check the model solutions (on the exams web page). If you suspect a bug in the solutions, post a question on piazza, so that we can quickly address the problem.
Regrade requests must be submitted on gradescope, within one week from when we post grades for the examlet.
Because final grades are due soon after the final exam, gradescope regrades for the final (and associated retakes and makeups) may be available only for a couple days. Details will depend on when the registrar puts our final exam. The one-week rule still applies, but later regrade requests will need to be emailed to the instructors.