Got rejected in first round. Was asked the question related to multiply string. Had answered in time M*N complexity and space M+N. Which is the most efficient. Interviewer has no objection or input for this. Still got rejected saying we have a bar and all.

there were 3 rounds 1 was dsa where 1 one medium level ques asked along with puzzle 2 was lld with one puzzle 3rd company fit with one puzzle last round was in office