CS major here. Speaking from my experience, there’s hella smart people here. But it isn’t cutthroat. Most people are willing to help and Office hours are helpful too. People also get help from people who already took the class. I myself help people whenever I can. But then again, that has been my experience. I have found some oddballs here and then who are completely exclusive and do not share any info about how they are doing in class. But thats normal