Blacked out for the most part. If you desperately need a job and insist in interviewing with these guys or any company using whiteboard hazing, take your time to practice writing functions and solving CS algorithms on a whiteboard. It is a complete different game than say coding with your computer and having access to Stack Overflow. Or you can use that time to work on real projects and apply to jobs at companies that ditched the whiteboard hazing process. For an updated list of whiteboard hazing free companies, search on GitHub for a repository called hiring-without-whiteboards managed by user poteto.