Imagination Technologies Software Design Engineer interview questions

I'd been contacted by a recruiter. The first step was a phone interview where they asked why I'd like to work for them and about my previous experience. Second step was an online test (C++), pretty simple, regarding memory management and STD Library. Third step was a F2F interview in their headquarter; they asked to solve a few algorithm (pretty tough) and to design a data structure. In my opinion the main problem with the interviewer was that they didn't have a clear idea about what to ask and it seemed like it was their first interview (not good in asking the question).

1. Phone screening - easy and pleasant, took maybe 15 minutes? 2. C++ online test - fairly difficult and unnecessarily detailed (nobody cares about many of the details asked, they don't matter in real life situations) 3. In person interview - fairly easy and very pleasant. They are really great folks! All travel covered by the company.