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Light and dark parts

Posted on: March 25th, 2013 by
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You want to build a room with perfect mirrors for the walls, ceiling and floor. You are free to choose the room. However, you must build the room and place a light source in the room such that:

  • The room is connected: a fly can fly from one point inside the room to another part without hitting the walls.
  • Part of the room is lighted and the other part is dark.

Suggest designs for building the room.


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