摘要：不算严格的计算几何，就是各种分类 精度调好就能过，考虑三条边斜着放的所有情况即可 阅读全文

摘要：题意：给你n个点，要求找到一个点，和一个圆心，使得有n/2向上取整个点在圆上，一定有满足条件的点存在 题解：既然一定有解，而且圆上有n/2向上取整个点，那么我们可以通过随机来找三个点来确定一个圆心，和半径，可以看出这三个点在圆上的概率是很大的，注意要特判点数为1，2，3，4的情况 ps：一开始想的是 阅读全文

摘要：You are to write a program that has to decide whether a given line segment intersects a given rectangle. An example: line: start point: (4,9) end poin 阅读全文

摘要：Stan has n sticks of various length. He throws them one at a time on the floor in a random way. After finishing throwing, Stan tries to find the top s 阅读全文

摘要：We all know that a pair of distinct points on a plane defines a line and that a pair of lines on a plane will intersect in one of three ways: 1) no in 阅读全文

摘要：Given n segments in the two dimensional space, write a program, which determines if there exists a line such that after projecting these segments on i 阅读全文

摘要：Mom and dad have a problem: their child, Reza, never puts his toys away when he is finished playing with them. They gave Reza a rectangular box to put 阅读全文