I applied through career fair, and received email within a week. scheduled a tech phone interview the next week. It was a 45 min interview. the interviewer was nice, but I was not in good condition (just taken a nap, and my brain was not functioning well). we went straight to the problem. The problem is some dynamic programming stuff, I was afraid that I can't come up with the right solution so I just started writing stupid recursion solution to save some time. and then we spent some time fixing it. And I came up with the "right" solution at the end, but I don't have time to write it, so I just explained how it should work. and then I asked a few questions, and that is it. I got rejection email in only 15 minutes later.