I think there are 2 rounds. First round contains 2 lc hard, lots of questions on cpp fundamentals. Know your stuff with templates, different pointer types, and RAI. Interviewer was very nice though.
Interview questions [1]
Question 1
Given a chemical compound, reduce it to its base form.
First round, very long and with multiple difficult components. Interviewer was very cordial and supportive throughout the round and answered follow up questions. Did not receive any follow up contact.