Microsoft

The interview consisted of four different algorithmic tasks. For each task, you had around 45 minutes and a separate interviewer. After you present a solution, the interviewer will most likely ask about how it can be improved and its O-complexity.

Awful. I had just passed an assignment and received an invitation to the next step, but it was impossible to move forward due to technical reasons. Don't spend your 1.5 hours. Even if you pass, this company is unavailable to you. HRs are unreachable

The interview was pretty hard and formal. The interviewers probed all the little details to gauge my understanding. One of them was also a bit on the edge, seemingly related to other stuff, so that can happen as well.