这是算法题目代码，题目为杭州电子科技大学oj平台的2653题（HDU 2653），此题目用到了记忆化搜索和优先队列的算法，读题较为麻烦-This is the algorithm topic code, entitled Hangzhou University of Electronic Science and Technology 2653 oj platform title (HDU 2653), this topic uses the memory of search and priori