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I am not sure, moving to zero from 4,6
- codemerlin September 06, 2017would be allowed since there is no board below 7 or 9.
Yes, example mention's it, but I am confused,
since the emphasis is on finding the number of the paths.
That being said, if 4 and 6 appears in the path,
now, the next will have three options.
that basically means traverse once through the graph for the number of the nodes for
each none 4 and 6 node put a factor of 3 everything else 2.
I am not sure a brute force answer of traversing through
counting is what interview is looking for