设计你的学校的平面图，至少包括10个以上的场所，每两个场所间可以有不同的路，且路长也可能不同，找出从任意场所到达另一场所的最佳路径（最短路径）。-Design the floor plan of your school, including at least more than 10 places, each of the two sites can have different road, and the long road may be different, find another place the best path (shortest path) to reach from any place .