A lot of questions about algorithms. there were questions about ios technologies. questions about mathematical graphs. in general, a difficult interview. comfortable interviewer and developers. the interview lasted a long time. as a result, I was offered an offer, but I chose another place

1 algorithm problem, where you need to place calls time consecutevily for HR, so that calls do not override each other. The interviewer asked my thought process first, and did not give me access to start coding before my verbal solution to the problem wouldn't be right.