原题干：There is a public bike service in Hangzhou City which provides great convenience to the tourists from all over the world. One may rent a bike at any station and return it to any other stations in the city.The Public Bike ...

原题干和原解答在这里：https://www.mmuaa.com/post/4146348c786b1cf1.html下面这种方法显然比原来的解答复杂，而且耗费资源，但是是最不容易出错的一种方法，也是一个万能的解题模板，使用Dijkstra找出所有的最短路径，然后再由DFS遍历所有路径， ...

原题干：A traveler's map gives the distances between cities along the highways, together with the cost of each highway. Now you are supposed to write a program to help a traveler to decide the shortest path between his/her starti ...

原题干：As an emergency rescue team leader of a city, you are given a special map of your country. The map shows several scattered cities connected by some roads. Amount of rescue teams in each city and the length of each road be ...