Hello. Thank you for leaving such a great comment. I understand that the difficulty of the problem may have made it a bit hard to follow. I've added more detailed explanations to the class notes to address the points you mentioned. Thank you, and please feel free to use the questions if you have any difficulties. :) Have a wonderful Saturday. Thank you.

My course has an unlimited enrollment period. If the course was locked, it would have been better if you had contacted Inflearn. It's something out of my control, yet you've modified the course review. I'm sorry that I couldn't resolve this for you.