Nice one! I've really gotta get better at that format string syntax!

Very cool!

You can't write a solution that runs faster than this tbh

Why doesn't this time out?

genius

This is good.

iteritems and itervalues don't even exist anymore in Python 3 (this is an old solution). But yes, values would be more efficient than items.

I didn't know this either. My code golf just leveled up.

You could make this a little more difficult by also accepting negative amounts (formatted correctly ;) and requiring the function to throw an error if the running total drops below zero.. it's fine for beginners though.

Yeah implementing the correct rounding is significantly harder than the actual task.

That does change difficulty level across languages.

I mainly meant efficient in the code golf sense of not requiring many characters. :) Yes, the floor division method is more performant.