vertices:
	Pickens
	Rosman
	Easley
	Brevard
	Furman

Adjacency matrix:
	   0  25   8  -1  17
	  25   0  -1  10  40
	   8  -1   0  -1  -1
	  -1  10  -1   0  -1
	  17  40  -1  -1   0

Neighbors of Furman:
	Pickens
	Rosman