brainbuster no. 30 - pacing the corridors

This competition closes on Sunday 23 May 2010.

Check the rules before entering.

the brainbuster

An engineer works in an office laid out as in the diagram below.

There are a number of square rooms with corridors on the ouside and between them.

Every corridor is 10m in length. The engineer starts at point A and wants to walk down every corridor. What is the shortest continuous path that they can take?

Give your answer as the total length, and the route (eg AFKL etc).

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