Hulu Software Developer Intern interview questions

A few weeks after I applied on Hulu's job website, I got an email says they want to interview me. First, they let me did a 8-hour programming exercise. That wasn't too difficult, but makes me exhausted since I spent the whole 8 hours solving the problem. Then after a few days, I got an email says I will have a second round of interview. During the interview, the interviewer just simply introduced himself (without asking me any questions), then went straight to the question I am going to solve. I believe the question is some kind of "classic" algorithm problem. I did solve that using brute force method but failed to provide a more efficient solution after several hints from the interviewers. So the next day, I got an reject letter.

After forwarding my resume, the university recruiter contacted me saying that the first step is the 8 hour coding challenge. They sent a link to a problem, and set the timer to 8 hours. The solution had to be emailed within 8 hours. It was a very good experience even though I didn't get selected.