I passed the practical exam in 2nd try! I am a non-major and failed the first practical exam with 49 points. Honestly, I thought the questions were too difficult at the time, so I worried a lot about whether I could pass the exam. However, I decided to study hard once more and definitely pass the next exam, so I looked for another online lecture and found the Weekend Coding Teacher's lecture. I had watched upcasting and coding problems on YouTube before the first exam, so I had enough confidence. Since I am weak in coding problems, I watched the teacher's coding lecture 2-3 times, reviewed it, and studied it repeatedly without fail. For non-majors studying for the Information Processing Engineer exam, as the Weekend Coding Teacher said, the regular exam is not difficult, but it is difficult because it is unfamiliar! If you feel it is difficult like me, I recommend watching it repeatedly. Of course, it will be difficult for those who are short on time. ㅠㅠ The concept problems that you mentioned also appeared on the exam, so I wrote the answers without any problems, and my goal was to "pass with 60 points." I worked hard, but since coding problems are hard to predict, I thought I should not make mistakes and just get all the easy ones right! I passed with a score of 60. ㅎㅎ If you are worried about the weekend coding teacher's lecture, I highly recommend it if you watch the teacher's YouTube lecture and understand it without difficulty!!! Thanks to the weekend coding teacher, I passed the information processing engineer certification. Thank you so much!! Please continue to give me good lectures~!