I found the 4 years of college that I had been just playing around in this course! Thank you so much. I was very satisfied with the section division and the length of the video lectures. I was able to increase my concentration with the short class, and I think I gained a lot from the process of thinking about it once, solving the problem on my own, and watching the video again to understand it. I will continue to follow the remaining roadmap course. Thank you for the great lecture :)