public static  Graph makePowerGraph(Graph g){
		Graph powerGraph =  new Graph(g);
		for(Vertex a: powerGraph.get_vertices()){
			for (Edge e : a.view_neighbors()){
				if(!e.is_hasBeenPowerd()){
					e.set_hasBeenPowerd(true);
					e.powerWeight();
				}
			}
		}
		return powerGraph;
	}