EPAM Systems Java Software Developer interview questions

Firstly epam conducted online coding round and i got 80 out of 100 and was called for 2nd round.2nd round was again a live coding round and out of 300 students 30 were selected and called for group discussion(which by the way is no elimination round). Then next we were called for technical round.There were 4 different rooms with 4 different interviewers(with different experiences and mindset).i was sent to the senior most interviewer and he asked me questions from my resume(don't fake anything in resume).He asked me questions about java but he was not ready to accept my answers and was a bit rude while on the other hand other interviewers asked very basic questions(which was somewhat partial) and i was not selected after technical even though the interviewer asked me to wait for HR round but i was later informed that you are not selected.I was expecting a positive result because the students who knew nothing were selected for the next round due to variety of interviewers.