Yeah, pretty stingy !

Try 98 & 99 which are upcoming to a 100. 100 is an interesting number even if 98 & 99 are not.

As others have reported, I get timouts when submitting. "Submission timed out. Please try again."

Phew, got there in the end. Not having any tests makes it harder & it was hard to understand what I was actually trying to do. The descriptions are good, but there is almost too much to understand in one hit. Perhaps making the steps you need to do more explicit would help. i.e. Step 1: implement 'bind', Step2: implement 'lift', etc.

From decimal made me feel stupid. I eventually got a solution after some time, but it is a lot longer and more complicated that some of the others. Good luck.

This could be a coding question in an interview... if you are mean :)