1. Introduction Recently, I watched a film about the mathematician Ramanujan, *The Man Who Knows No Bounds*. This film doesn't attempt to explain complex mathematical formulas to the audience, but rather repeatedly emphasizes a more intuitive question: what happens to a genius if they are born in the wrong era? Ramanujan was…

1 Introduction: A long time ago, I watched the movie "21," and the scene where the team cooperated in counting cards during the game of 21 left a deep impression on me. However, at the time, I just watched it for fun and didn't delve into the deeper reasons why counting cards can win. Recently, I had some free time and rewatched it. This time, I don't know...