I also took this lecture because I had a lot of difficulties solving Baekjoon problems. At first, there were simple problems, so I tried to build up my basics, but as I went on, it got so difficult that I spent more than 1-2 hours per problem. ㅋㅋㅋㅋ.. But as I solved them and listened to the lecture, I definitely felt like my skills were improving. It was really great that the lecturer explained the algorithms in detail and explained the code. If there was a problem that I couldn't solve no matter how much I thought about it, I could just listen to the explanation of the algorithm and try out the code myself, which was great. If there's one thing I regret, I took this lecture while studying C++, but I think the coding content on object-oriented programming (classes) was lacking. Of course, I saw that the lecturer used the struct structure in the middle of the lecture, so I practiced using it more as a class, but I thought it would have been better if I had delved into this part a bit more. It's an advantage of C++. Still, it was a great lecture for learning algorithms, and it helped me a lot. I'm planning on taking that follow-up lecture since it's out!!