Amazon Software Engineer (Software Developer II) interview questions

1 OA with hard questions, after passing that, 4 final rounds of 1 hour each were scheduled. 2 coding, 1 OOD and 1 system design with first 15-20 minutes for leadership principles. The interviewers were not prepared for a different solution in the coding rounds. Even though I gave a working solution, they were not satisfied because my solution did not match their answer key. This interview experience hurt very bad since I knew my answers were correct (checked after the interview) and even though I tried explaining my approach, they were not agreeing to why it would work. System design was from grokking and it went okay. They put a lot of weightage to the leadership principles, trying to get all the signals that they want. Have multiple stories for each LP because they don't tolerate repetition.