Continental interview questions

Onsite at Auburn Hills, MI. First round, about 2 hours, interview with 2 supervisor, talking about your experience, project details, some algorithm concepts, like K-mean. And whiteboard question, about 2 eggs/100 floor, find out which floor the eggs would break. They want to know how you think, not just the answer. So do some research on this question. Then behavioral questions. And then coding challenge about writing a recursive function regarding fibonacci problem. During coding challenge, they were very pushy, they kept asking questions from the beginning, did not provide any time for me to think thru the question. That was very very unprofessional. Second round, about 1 hour, chat with HR about availability, salary expectation, behavioral questions. After the interview, nobody followed up with me. Bad experience.

Two interviewers, one of them was very patient and calm, he gave some hints when I am not able to answer the question; another guy is impatient and ego, ask question in aggressive way.