Has two questions for oa, the first one is harder. There are similar questions on leetcode, you could practice on those questions, such as lists, arrays, and trees, etc. Have not start with the interviews yet.

The IMC interview was challenging but rewarding, highlighting problem-solving, modern C++ expertise. The process was very professional, they were very transparent about the salaries even when I asked for less than their range. The process was also very fast which helped with competing offers.