Samsung R And D

First we were required to go through a 3 hour OA, which happened on their platform.You are required to pass all the test cases to be eligible for the Interview rounds. There were 2 interview rounds. First one was DSA + CS Fundamentals , and Second one was HRM Round . So in the first round I was aked Binary Tree Max Path Sum, and next was Alien Dictionary (For this only approach needed to explain, no need to write the code). Next was HRM round, where we discussed about the projects that I have made as well as my background and some behabioural questions.