I feel like I've finally reached the end after going through Coding Test Pass in Python and then C++, participating in several challenges along the way. The problems were the same, but I found C++ much easier to understand than Python, which I initially thought would be simpler. Completing the missions you provided helped me a lot in understanding the learning material (though I still have more to do...). Since I want to constantly think about the performance and efficiency of my code or the code I produce as output, I studied whenever I could find the time. It feels great to have reached the finish line at least once~ Thank you for hosting such a great challenge.