The lecture is good, but my Korean (vocabulary) skills are very poor. The sentence structure of each word written with a # is so poor that I wonder if I have dyslexia. The Korean explanation is so strange. I just listened to it thinking it was just like that, but it was so bad that it was annoying. Example ) # Write a program that receives two integers from the user and prints out all the values between the first and second inputs that are multiples of 3 and excludes multiples of 4. Other than that, the lecture is good.