Time_Life的专栏

题目： Description 某省调查城镇交通状况，得到现有城镇道路统计表，表中列出了每条道路直接连通的城镇。省政府“畅通工程”的目标是使全省任何两个城镇间都可以实现交通（但不一定有直接的道路相连，只要互相间接通过道路可达即可）。问最少还需要建设多少条道路？ Input 测试输入包含若干测试用例。每个测试用例的第1行给出两个正整数，分别是城镇数目N ( <

题目： Description 某省调查乡村交通状况，得到的统计表中列出了任意两村庄间的距离。省政府“畅通工程”的目标是使全省任何两个村庄间都可以实现公路交通（但不一定有直接的公路相连，只要能间接通过公路可达即可），并要求铺设的公路总长度为最小。请计算最小的公路总长度。 Input 测试输入包含若干测试用例。每个测试用例的第1行给出村庄数目N ( < 100

题目： Description The island nation of Flatopia is perfectly flat. Unfortunately, Flatopia has no public highways. So the traffic is difficult in Flatopia. The Flatopian government is aware of

题目： Description Andrew is working as system administrator and is planning to establish a new network in his company. There will be N hubs in the company, they can be connected to each other us

题目： Description The cows have run out of hay, a horrible event that must be remedied immediately. Bessie intends to visit the other farms to survey their hay situation. There are N (2 <= N <