One-liner It's really good, but if you're a beginner, you might have a hard time. Advantages The core problem concept is explained very easily and clearly. This felt like a wall in the first week when I was a beginner, but if you see the solution process and understand it, you can solve the next problem and the next problem with the same structure, so your ability to read and interpret problems has improved a lot! Disadvantages. Some algorithms are missing. I'm only taking the second week, so that might be why, but there's no union find Dijkstra or segment tree in the curriculum...ㅜ The lecture is really good~!