Take a grand tour of the science building when you visit the DMS Science Fair on Friday. Below is a sketch of the floor plan showing all rooms and connecting doorways, including the hidden door behind the blackboard and the mysterious "utility room." Closets with only one entry are not shown. That's a lot of doors! Can you find a path through the building that goes through each doorway exactly once, without going through any doorway a second time? Start and end where you like, but there's a bonus if you start on the porch.
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Marc Kummel / firstname.lastname@example.org