Originally Posted by emakarov Originally Posted by Opalg The root has to come at the end of one of the branches. Not necessarily; any vertex can be a root. Quite right, of course. That was me being dumb.
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Originally Posted by Opalg Quite right, of course. That was me being dumb. SO you are actually saying that vertex 2, 5, 7 or 11 could also be roots?
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