Hi all,<div><br></div><div>I am currently havong a problem with the Kolmogorov max flow usage in the BGL. The probelm is that at the end of the algorithm, some vertices are gray. What is there real status: do they belong to the tree or sink. None of both? Why?</div>

<div><br></div><div>Hope you could help</div><div><br></div><div>Regards,</div><div><br></div><div>Olivier<br>
</div>