The first round is written test with two parts: multiple choices and algorithms. Multiple choice main questions are about how deep of your understanding C++ programming (OOP, complexity,...) and the second part challenges your problem-solving skills. The process was hard and it took 2 hours to complete.

It has 3 round. Round 1: Online test (CS fundamental multiple choice questions and algorithm code); Round 2 & 3: live coding. The process took me one month. Their algo problem are quite tricky, you can not use global variables.