Faster grade function for Color Bridge Matlab Contest

Here I provide a speedup for the grade function of the Color Bridge Matlab Contest.

This package contains a fast replacement of the subfunction flood in runSolutionVector.m. Just unzip both files with the rest of the contest files.

If you want to convince yourself that the result of my function flood3.m is correct, just change "compareResults = 0" to "compareResults = 1" in line 51 of runSolutionVector.m.

Have fun in the contest!