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 priority queue algorithms, read more troublesome questions