Rounds are Easy. You can crack it with your basic understanding of required technology & DS, Algo & programming. the second round interviewer wasn't supportive at all. his first line of greetings was : " I thought the interview was on monday ". And he wasn't supportive, wasn't interested to listen to your approach at all, he just wanted the silent known coder who already cramed the solutions , no new approach was supported. don't expect the hint

First a Hacker Rank assessment of three questions, a call with the recruiter, then a 15 min interview with the hiring manager, and then a final set of two technical interviews for around three hours.