Without a specific python function, this was very confusing.

In the case where both elevators are equally distant from the called floor, choose the elevator to the right.

Your code fails for (1 1 0). The distance of call to left&& right respectively is the same, so the answer should be right.

according to the instructions "the elevator should take the second call if it is closest to both calls AND if both floors are in the same direction for the elevator AND both calls are in the same direction even if it needs to change it's direction once to pick them both up." How is floor 5 closer to -7 than a lift at -4 moving downwards?

Am I missing something here?

[5,-5,{"floor":-4,"direction":"down"},{"floor":-7,"direction":"down"}]: expected 'right right' to equal 'right left'

Right is closer to both, both are in the same direction and it doesn't have to change direction

changed to

There is a building with 2 elevators ('left' and 'right') and a bunch of floors (both negative and positive).

Description is indecisive about how many floors exist: if the actual range of floors can be unbounded in both positive and negative ranges, the description shouldn't start with and 5 floors (0, 1, 2, 3, 4) and then invalidate this statement at the end of the description, that's just being nasty and unnecessarily misleading.

Thanks for your efforts.

Important notes added to the description

Notes:
- if one or both calls come from the same floor as an elevator, these are considered to be on the same side of the elevator
- if an elevator is closest to both calls, but the conditions to take both calls are not met, pick call1

fixed

Updated to node 18 and error messages improved.

fixed

fixed

I've updated the ref sol and made some edge cases more clear in the description. Could you retry?

The ref sol does not take into account one caller being on the same floor as both being on the same side (up / down) of an elevator. I'll rework the ref sol. This will probably invalidate most if not all solutions.