用图来表示一个校园内各种地名（不少于10个），及其相对位置，实现校园内主要地点的遍历，并能求解任意两个地点之间的最短距离。-By using the picture to show a campus various places (not less than 10), and their relative positions, realize the main campus of the site traverse, and can solve any two place the shortes