转载请注明出处: http://www.cnblogs.com/fraud/          ——by fraud Jack Straws Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 3512   Accepted: 1601 Description In the game of Jack Straws, a number of plastic or wooden "straws" are dumped o…

给你一些线段,求出哪些线段是相连的,哪些是不相连的.相连包括间接相连,即这两条线段本身不直接相连,而是通过其它线段的连接而间接相连. 线段相交+并查集 这里主要说如何判断线段相交:快速排斥试验+跨立试验牢记一点:研究对象一定是两条线段的四个端点 (快速排斥试验:只是可以证明这两条一定不相交,达到一点加速效果)以线段P1,P2为对角线作一矩形R,再以Q1,Q2为对角线作矩形T,当两个矩形不相交的时候两条线段肯定不相交,即线段相交的必要条件时矩形相交.矩阵相交依据:两条线段一共四个端点,x/y轴中,…

1840: Jack Straws 时间限制(普通/Java):1000MS/10000MS     内存限制:65536KByte 总提交: 168            测试通过:129 描述 In the game of Jack Straws, a number of plastic or wooden "straws" are dumped on the table and players try to remove them one-by-one without distu…

http://poj.org/problem?id=1127   Description In the game of Jack Straws, a number of plastic or wooden "straws" are dumped on the table and players try to remove them one-by-one without disturbing the other straws. Here, we are only concerned wi…

描述 In the game of Jack Straws, a number of plastic or wooden "straws" are dumped on the table and players try to remove them one-by-one without disturbing the other straws. Here, we are only concerned with if various pairs of straws are connecte…

Jack Straws Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 2911   Accepted: 1322 Description In the game of Jack Straws, a number of plastic or wooden "straws" are dumped on the table and players try to remove them one-by-one witho…

Description In the game of Jack Straws, a number of plastic or wooden "straws" are dumped on the table and players try to remove them one-by-one without disturbing the other straws. Here, we are only concerned with if various pairs of straws are…

In the game of Jack Straws, a number of plastic or wooden "straws" are dumped on the table and players try to remove them one-by-one without disturbing the other straws. Here, we are only concerned with if various pairs of straws are connected b…

Jack Straws Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 5428   Accepted: 2461 Description In the game of Jack Straws, a number of plastic or wooden "straws" are dumped on the table and players try to remove them one-by-one witho…

1840: Jack Straws  Time Limit(Common/Java):1000MS/10000MS     Memory Limit:65536KByteTotal Submit: 154            Accepted:119 Description In the game of Jack Straws, a number of plastic or wooden "straws" are dumped on the table and players try…