Hello codeforces!

Combo games are fun and I think people should do more of them. Here's a collection of problems I made two years ago that I'm opening publicly because I don't have a use for them anymore. Click here for the gym

Mostly I'm just sharing because they're cool, but I also want to get a gauge on their difficulty. So if you solve any of them, feel free to comment what you think their problem ratings are.

If you're really up for the challenge, you can also try to rigorously prove your solutions (this will make it a lot harder).

Hf!