I listened to the explanation based on the actual code. I listened to it well because it explained the contents applied based on the actual source easily. I can understand it after listening to it once, but I think I need to listen to it a few more times and actually code it as I thought in order to use it in practice. I think I can see the direction because I approached the contents of the algorithm based on what I was thinking on my own. It was good that I could find the code in the video and try it through the blog. Thank you for the great lecture.