Mr lebron的博客

Problem Description After World War X, a lot of cities have been seriously damaged, and we need to rebuild those cities. However, some materials needed can only be produced in certain places. So we n

Description Farmer John's cows refused to run in his marathon since he chose a path much too long for their leisurely lifestyle. He therefore wants to find a path of a more reasonable length. The inp

时间限制:10000ms 单点时限:1000ms 内存限制:256MB 描述 上上回说到，小Hi和小Ho用非常拙劣——或者说粗糙的手段山寨出了一个神奇的网站，这个网站可以计算出某两个人的所有共同祖先中辈分最低的一个是谁。远在美国的他们利用了一些奇妙的技术获得了国内许多人的相关信息，并且搭建了一个小小的网站来应付来自四面八方的请求。 但正如我们所能想象到的……这样一