7           # of nodes in a given network
11	    # of edges in a given network
0	20	50	0	0	0	0      WEIGHT MATRIX
0	0	0	60	50	0	0
0	10	0	30	0	0	0
0	0	0	0	10	0	20
0	0	0	0	0	80	40
0	0	0	0	0	0	40
0	0	0	0	0	0	0