ByteDance interview questions

Applied through campus, get OA. 3 days later given interview. 2 interview done in the same day. Got rejected in third interview (final), even though I think I did well by giving optimum solution. Want to ask feedback, but the HR couldn't give anything since all is automated (sigh)

Three rounds. The first round do resume screening, two linkedlist questions, one DP questions and one AI check? After the first round and resume screen, move to an MLE ask more questions about ML in the second round. Don't move forward