Meta Software Developer interview questions

It was an data structures and algorithms round. The questions were mid to high level leetcode questions. The asked the time complexity of all the questions.Then the the interviewer will ask you to optimize the code with the best time complexity possible

Interview onsite, screening call then 5 rounds. 3 coding rounds, 1 behavioural and 1 system design. Overall neutral experience, haven’t heard back from the recruiter. I don’t remember the questions or answer.