说明：  基于Dijkstra方法的最短路径改良版方法,能够一次性搜索出最优最优起点终点、最优路径、路径长度，常用于图论相关问题
(Shortest path method ,which is based on a modified version of the method Dijkstra, is possible to search out the best starting point, terminate point, the optimal path, and the path length.It is commonly used in graph theory related issues)