Amazon Software Development Engineer, interview questions

The interviewers are quite nice. I have back to back 2 phone interviews, 45 minutes each, and 15 minutes rest between the two. Each interviewer asked me some algorithms problem, and then let me code. The problems are not very difficult, but I did not perform well so I was declined the other day.

I had 2 phone screens and than was invited to Seattle for a visit which included 5 interviews and meeting with recruiting manager.