Yandex interview questions

At least 5 interviews in their office or later on via Skype. Each one is one hour long with exactly one different interviewer. One of the interviews can be about architecture of distributed highload systems and load balancing. The problems are essentially the same and not very difficult. An interviewer gives hints and lets you correct your bugs. But if you don't understand or don't follow the hint, you'll likely fail that problem and will be rejected as a result.

1) Skype call (with future supervisor); 2) Test assignment, submitted via email (I sent a link to Google-doc, where my solution was provided); 3) On-site interview (probably with some extra test assignments); 4) Offer / rejection.