I always have no problem with any of this stuff, and then when I get into an onsite interview they expect me to regurgitate a BFS algorithm on some arbitrary gr

I always have no problem with any of this stuff, and then when I get into an onsite interview they expect me to regurgitate a BFS algorithm on some arbitrary graph on a whiteboard in front of three people, then I get silently judged and asked to leave. Meh.