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…

原题如下: Jack Straws Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 5555   Accepted: 2536 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…

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…

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…

Jack Straws 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 o…

Jack Straws 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…

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…

题意:桌子上放着n根木棍,已知木棍两端的坐标.给定几对木棍,判断每对木棍是否相连.当两根木棍之间有公共点或可以通过相连的木棍间接的连在一起,则认为是相连的. 分析: 1.若线段i与j平行,且有部分重合,则相连.否则,求直线i与直线j交点,再判断该交点是否在两线段上,以确定是否相连. 2.flod整理一下所有的关系. 3.判断点是否在线段上:(线段i,点t) (1)外积(l[i] - t) × (r[i] - t) = 0, 可判断点x是否在直线i上(两向量叉乘为0,两向量平行) (2)内积(l[…

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…