跑leach需要的

				GRAPH (#nodes #edges id uu vv ww xx yy zz):				10 30 geo(0,{10,10,3,0.200,0.000,0.000}) 10 								VERTICES (index name u v w x y z):				0 0 4 0 				1 1 2 9 				2 2 8 1 				3 3 6 4 				4 4 8 3 				5 5 8 6 				6 6 2 3 				7 7 9 3 				8 8 3 4 				9 9 2 4 								EDGES (from-node to-node length a b):				0 8 4 0 				0 7 6 0 				0 6 4 0 				0 3 4 0 				0 1 9 0 				1 6 6 0 				1 2 10 0 				2 7 2 0 				4 9 6 0 				4 8 5 0 				4 6 6 0 				5 9 6 0 				6 9 1 0 				6 8 1 0 				6 7 7 0