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.
We will be using Gradescope to grade and return graded written texts back. Regrade requests should be submitted in a timely fashion through Gradescope. We will have more details on this soon.