The indicator above the elevator door shows that the elevator is now going down to the first floor and is at the level of the kth floor

'IS NOW GOING DOWN' means the elevator is going down at the moment Petr is at the nth floor, when he hasn't called the elevator yet.
This cause a big misunderstanding! I almost banged my head to the wall that I got the answer 44 on the example case every time. It also gives me a +1, :P.

It would be better if it's changed to

The indicator above the elevator door shows that the elevator WILL GO down to the first floor WHEN CALLED and is at the level of the kth floor

If I misunderstand the task, please inform me.

Thank you

Edited by author 07.03.2008 22:32