用无向网表示学校的校园景点平面图，图中顶点表示主要景点， 存放景点的编号、名称、简介等信息，图中的边表示景点间的道路，存放路径长度等信息。要求能够回答有关景点介绍、游览路径等问题。 -Free to the net means that schools Attractions plan, map Vertex main attractions, the number of storage sites, names, profile information such as the edge map that the road attractions, store information such as path length. Asked to answer questions about attractions, the tour path and so on.