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D1 route inspection question

1483533612913-2016494093.jpg can someone please explain part b . I don't get how this would be difference from the standard problem.

Thanks
Original post by coconut64
1483533612913-2016494093.jpg can someone please explain part b . I don't get how this would be difference from the standard problem.

Thanks


You've now got to walk along each road twice which effectively makes each vertex even. You therefore don't have to do any more extras. The length of your route is therefore just twice the total length of the roads.

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