I started listening to the lecture without being familiar with cpp, so I was worried, but after reading the textbook carefully and solving the problems, I now feel most comfortable solving algorithm problems with cpp. I think it's because the textbook quality is good, so I don't have any problems solving algorithm cpp. It seems like you intended it, but as the lecture progresses, problems that contain the core of the lecture come up, and as I solve them, I feel like I'm solving problems that I didn't know well. The more time I spend on algorithms, the more fun it becomes. Also, you tell me how to study algorithms, and although it's hard to review every day, I think it stays in my head. Is it this hard to become an algorithm expert? I'm listening hard, so I hope you film additional lectures. ㅎㅎ I watched the vector pushback time complexity video and the entire time complexity video on YouTube, and I think those videos go well together!