Pick-up sticks(判断两直线相交)

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Pick-up sticks(判断两直线相交)

Pick-up sticks Time Limit: 3000MS Memory Limit: 65536K Total Submissions: 11335 Accepted: 4250 Description 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 fin…

【POJ 1269】判断两直线相交

题利用叉积解方程 #include <cstdio> #define MAX 1<<31 #define dd double int xmult(dd x1,dd y1,dd x2,dd y2,dd x,dd y){ return (x1-x)*(y2-y)-(x2-x)*(y1-y); } int main(){ int n; dd x1,y1,x2,y2,x3,y3,x4,y4; scanf("%d",&n); puts("INTERSE…

hdu 1147:Pick-up sticks（基本题，判断两线段相交）

Pick-up sticks Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 1872 Accepted Submission(s): 706 Problem Description Stan has n sticks of various length. He throws them one at a time on the fl…

Intersecting Lines （计算几何基础+判断两直线的位置关系）

题目链接:http://poj.org/problem?id=1269 题面: Description 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 intersection because they are parallel, 2) interse…

POJ 1269 Intersecting Lines（判断两直线位置关系）

题目传送门:POJ 1269 Intersecting Lines Description 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 intersection because they are parallel, 2) intersect in…

poj 1127:Jack Straws（判断两线段相交 + 并查集）

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…

You can Solve a Geometry Problem too （hdu1086）几何，判断两线段相交

You can Solve a Geometry Problem too Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 6837 Accepted Submission(s): 3303 Problem Description Many geometry(几何)problems were designed in the ACM/ICPC. A…