The materials are neat and good, without any unnecessary details! I've read the basic book several times, but when I actually apply grammar to a problem and solve it, it's sometimes difficult, so I think this is very helpful! I took the class to prepare for the algorithm test, and I hope it leads to good results ㅠㅠ I'll study hard... Thank you for making such a great lecture :) ++ If I may leave a little feedback, in the latter part, should I say the microphone sound..? That part is a little bit..! annoying ㅠㅠ I haven't heard everything yet, so I'll have to listen to it more, but I think it would be good if you take it into consideration when making other lectures!