Hello! I'm a rising computer science freshman in college. I got enough high school credit to fulfill over half of my general education requirements, which got me thinking...
Let's imagine that my only goal in college is to become the best rationalist ever. What classes should I take? Please don't just say "math," be as specific as possible: differential equations or Diophantine? Every credit counts here, and college students don't have much time.
If you need a reminder, here's a decent example PDF for what college courses typically teach which things. Hopefully the relative homogeneity of college courses (especially in STEM) will make your answer applicable to any university.