摘要：题目链接：https://icpcarchive.ecs.baylor.edu/index.php?option=com_onlinejudge&Itemid=8&category=648&page=show_problem&problem=5159In normal football games,... 阅读全文

摘要：Long long ago there is a strong tribe living on the earth. They always have wars and eonquer others.One day, there is another tribe become their targe... 阅读全文

摘要：题目链接：http://acm.hdu.edu.cn/showproblem.php?pid=1052Problem DescriptionHere is a famous story in Chinese history."That was about 2300 years ago. Genera... 阅读全文

摘要：Our chemical biologists have invented a new very useful form of life calledstripies(in fact, they were first called in Russian -polosatiki, but the scientists had to invent an English name to apply for an international patent). The stripies are transparent amorphous amebiform creatures that live in 阅读全文

摘要：Description“Be subtle! Be subtle! And use your spies for every kind of business. ”― Sun Tzu“A spy with insufficient ability really sucks”― An anonymous general who lost the warYou, a general, following Sun Tzu’s instruction, make heavy use of spies and agents to gain information secretly in order to 阅读全文

摘要：DescriptionA new Semester is coming and students are troubling for selecting courses. Students select their course on the web course system. There are n courses, the ith course is available during the time interval (Ai,Bi). That means, if you want to select the ith course, you must select it after t 阅读全文

摘要：Problem DescriptionConsider a Depth-First-Search(DFS) spanning tree T of a undirected connected graph G, we define a T-Simple Circle as a path v1, v2, ..., vk(v1= vk) in G that contains at most one edge which not belongs to the DFS spanning tree T.Given a graph G, we process DFS on G starting from v 阅读全文

摘要：一、代码： 1、求逆元（原理貌似就是拓展欧几里得，要求MOD是素数）： 2、底层优化（正确性未验证）： 3、扩栈，这玩意儿在OJ上用能防爆？ 4、神速读入fread 二、神牛blog matrix67 ZKW watashi 三、专题 动态规划系列： 数位dp模板 字符串系列： 【专辑】AC自动机 阅读全文

摘要：DescriptionJohn is the only priest in his town. October 26th is the John's busiest day in a year because there is an old legend in the town that the couple who get married on that day will be forever blessed by the God of Love. This year N couples plan to get married on the blessed day. The i-th 阅读全文