木子川

摘要： 次小生成树是指在一个树中除最小生成树外第二小的生成树，因此它是在最小生成树算法上衍生的。首先在求出最小生成树后，假如我们要加上一条树外的边，这样就会形成一个闭环，然后将这个闭环的最大 的边删除，那么剩下的依然是一个树，如果这个树<=最小生成树，那么它就是次小生成树。 如果我们要加边的话，加的肯定是树 阅读全文

摘要： During the Warring States Period of ancient China(476 BC to 221 BC), there were seven kingdoms in China they were Qi, Chu, Yan, Han, Zhao, Wei and Qin 阅读全文

摘要： During the War of Resistance Against Japan, tunnel warfare was carried out extensively in the vast areas of north China Plain. Generally speaking, vil 阅读全文

摘要： A lot of battleships of evil are arranged in a line before the battle. Our commander decides to use our secret weapon to eliminate the battleships. Ea 阅读全文

摘要： For the daily milking, Farmer John's N cows (1 ≤ N ≤ 50,000) always line up in the same order. One day Farmer John decides to organize a game of Ultim 阅读全文

摘要： In the game of DotA, Pudge’s meat hook is actually the most horrible thing for most of the heroes. The hook is made up of several consecutive metallic 阅读全文

摘要： The citizens of Bytetown, AB, could not stand that the candidates in the mayoral election campaign have been placing their electoral posters at all pl 阅读全文

摘要： You have N integers, A1, A2, ... , AN. You need to deal with two kinds of operations. One type of operation is to add some given number to each number 阅读全文

摘要： 很多学校流行一种比较的习惯。老师们很喜欢询问，从某某到某某当中，分数最高的是多少。 这让很多学生很反感。 不管你喜不喜欢，现在需要你做的是，就是按照老师的要求，写一个程序，模拟老师的询问。当然，老师有时候需要更新某位同学的成绩。 Input本题目包含多组测试，请处理到文件结束。 在每个测试的第一行， 阅读全文

摘要： C国的死对头A国这段时间正在进行军事演习，所以C国间谍头子Derek和他手下Tidy又开始忙乎了。A国在海岸线沿直线布置了N个工兵营地,Derek和Tidy的任务就是要监视这些工兵营地的活动情况。由于采取了某种先进的监测手段，所以每个工兵营地的人数C国都掌握的一清二楚,每个工兵营地的人数都有可能发生 阅读全文