Rakuten Software Engineer interview questions

I went through a very lengthy and tiresome interview process of 4 rounds as most everyone went through but it dragged a bit more than 2 months. 1) Online technical test and video pre-recorded questions 2) Technical interview with Direct manager/Team Lead 3)Technical interview + Behavioral interview with Section Manager 4) Essay writing on 2 Rakuten books written by their CEO and followed by final interview. The problem is I didn't expect the final round to be still a technical interview and in fact the toughest technical interview in all 3 rounds. The first 2 technical rounds were pretty easy. It's ok to fail candidate but I feel Rakuten doesn't respect candidate's time and effort. Such technical challenges should be put up front rather than letting me even go through essay writing, put aside all the waiting time in between.

1. Fill the application Form on the website 2. Do the online coding (calculate the area of two rectangles that may overlap, which is in the leetcode problems) 3. Skype Technical interview. Questions in the C++ such as the definition of 'volitate' are asked. Now waiting for the second interview.