I went through four steps of interviewing, listed as follows:

1. Phone screen with a recruiter. I was asked five iOS-related questions, and if I had a majority correct, then I passed.
2. Coding interview using CoderPad. I was asked two questions related to traversing a graph.
3. On-site interview in Menlo Park. I had four interviews back-to-back with one lunch break.
4. Follow-up interview via CoderPad. I had a really, really crappy experience with my last interviewer, who showed no professionalism. While interviewing, he yawned, raised his voice, and kept rolling his eyes throughout our conversation. This is definitely not something anyone should go through, especially while under immense pressure.

If this is the type of environment a person needs to endure, then I think it's a huge concern, especially with the whole lack of security situation going on with the company.

How would you get from the top left of a quad-graph to the bottom right?