ByteDance Software Engineer interview questions

I applied online and was invited to a online video interview. It started off well but after the interviewer explained the problem. My immediate response is to ask the edge cases. Which he shot me down and said 'assume everything is working as expected'. I mean, if we are assuming everything is working as expected then why write code for the problem anyway. Still, I moved forward to explain the approach, which he was not ready to listen and asked me to code. When i started coding, he stopped me frequently to ask questions which is good as he was having a good conversation. But sometimes he would stop me and say dont code it 'this' way code it in another way. Overall, the question was good, find the maxPath in a tree. I did complete the code and it was working (he ran it in the coderpad with some test cases), yet, I got a reject in few days.