ACM,再见！

http://acm.hdu.edu.cn/showproblem.php?pid=1232Problem 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？  

http://acm.hdu.edu.cn/showproblem.php?pid=3635

B. DZY Loves Chemistrytime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputDZY loves chemistry, and he enjoys mi

http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=5343Edward is a rich man. He owns a large factory for health drink production. As a matter of course, there is a large warehouse in the f

http://acm.hdu.edu.cn/showproblem.php?pid=4786Problem Description　　Coach Pang is interested in Fibonacci numbers while Uncle Yang wants him to do some research on Spanning Tree. So Coach Pan

http://acm.hdu.edu.cn/showproblem.php?pid=4424

http://acm.hdu.edu.cn/showproblem.php?pid=4313Problem DescriptionMachines have once again attacked the kingdom of Xions. The kingdom of Xions has N cities and N-1 bidirectional roads. The ro

http://acm.hdu.edu.cn/showproblem.php?pid=5222Problem DescriptionMiceren likes exploration and he found a huge labyrinth underground! This labyrinth has N caves and some tunnels connec

http://poj.org/problem?id=1182Description动物王国中有三类动物A,B,C，这三类动物的食物链构成了有趣的环形。A吃B， B吃C，C吃A。 现有N个动物，以1－N编号。每个动物都是A,B,C中的一种，但是我们并不知道它到底是哪一种。 有人用两种说法对这N个动物所构成的食物链关系进行描述： 第一种说法是"1 X Y"，表示X和Y是同类

http://acm.nefu.edu.cn/JudgeOnline/problemshow.php?problem_id=676description　　Little A gets to know a new friend, Little B, recently. One day, they realize that they are family 5

http://poj.org/problem?id=1611DescriptionSevere acute respiratory syndrome (SARS), an atypical pneumonia of unknown aetiology, was recognized as a global threat in mid-March 2003. To minimize

http://acm.hdu.edu.cn/showproblem.php?pid=1272Problem Description上次Gardon的迷宫城堡小希玩了很久（见Problem B），现在她也想设计一个迷宫让Gardon来走。但是她设计迷宫的思路不一样，首先她认为所有的通道都应该是双向连通的，就是说如果有一个通道连通了房间A和B，那么既可以通过它从房间A走到房间B，也

http://acm.hust.edu.cn/vjudge/contest/view.action?cid=42070#problem/BDescriptionOne day n students come to the stadium. They want to play football, and for that they need to split into tea

http://acm.hust.edu.cn/vjudge/contest/view.action?cid=41768#problem/EDescription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）。经过调查评估，得到的统计表中列出了有可能建设公路的若干条道路的成本。现请你编写程序，计算出全省

http://acm.hdu.edu.cn/showproblem.php?pid=1856Problem DescriptionMr Wang wants some boys to help him with a project. Because the project is rather complex, the more boys come, the better it

http://acm.hdu.edu.cn/showproblem.php?pid=1233Problem 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。

http://acm.hdu.edu.cn/showproblem.php?pid=1325Problem DescriptionA tree is a well-known data structure that is either empty (null, void, nothing) or is a set of one or more nodes connected b

http://acm.hust.edu.cn/vjudge/contest/view.action?cid=42071#problem/CDescriptionBajtek is learning to skate on ice. He's a beginner, so his only mode of transportation is pushing off from

http://acm.hdu.edu.cn/showproblem.php?pid=1598Problem DescriptionXX星有许多城市，城市之间通过一种奇怪的高速公路SARS(Super Air Roam Structure---超级空中漫游结构）进行交流，每条SARS都对行驶在上面的Flycar限制了固定的Speed，同时XX星人对 Flycar的“舒适度

http://acm.hdu.edu.cn/showproblem.php?pid=1829Problem DescriptionBackground Professor Hopper is researching the sexual behavior of a rare species of bugs. He assumes that they feature two