Warp nous apporta ses lumieres en ce 2008/01/01 12:13:
>   Suppose you have two trains of the same length travelling on the same
> track on opposite directions, towards each other.
> 
>   In the middle the track splits into a double track for a certain distance,
> but this distance is slightly smaller than the length of either train.
> 
>   The task is to make the trains pass each other so that they can continue
> their journey.
> 
>   The trains cannot be split and you can't remove anything from the trains.
> The track cannot be modified, and you cannot build additional track.
> 
Apply the breaks on the engines as they near the end of the crossing area. The 
couplings will contract enough for each trains to clear the end of the other. 
Timing will be critical.

-- 
Alain
-------------------------------------------------
Eat one live toad the first thing in the morning and nothing worse will happen 
to you the rest of the day.

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