给出校园内各个地点之间最短路径，节省同学们时间。同时也为其他学校的同学来到上海海事大学游览提供导游，详细介绍上海海事大学的景点以及详细信息。-Gives the shortest path between various locations on campus, students save time. Also came as students in other schools offer guided tours of Shanghai Maritime University, Shangha