Amazon Software Development Engineer interview questions

First round is online test. which contains four sections. Debugging section which has 7 questions with time 20 min. Second section is coding which has 2 problems with time 1 hour. third section is behavioural which has 50 questions with 15 min . last round that is 4th round is logical reasoning which has 20 questions with 30 min time. Second round is Technical interview. In which they asked me 2 questions to code . which we should explain them our approach first.