链接: http://acm.hdu.edu.cn/showproblem.php?pid=4617 Weapon Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 65535/32768 K (Java/Others) Total Submission(s): 224    Accepted Submission(s): 178 Problem Description Doctor D. are researching for a…

Weapon Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 65535/32768 K (Java/Others)Total Submission(s): 22    Accepted Submission(s): 18 Problem Description Doctor D. are researching for a horrific weapon. The muzzle of the weapon is a circle.…

http://acm.hdu.edu.cn/showproblem.php?pid=4617 三维几何简单题 多谢高尚博学长留下的模板 代码: #include <iostream> #include <cstdio> #include <algorithm> #include <cstring> #include <cmath> using namespace std; typedef long long ll; typedef pair<…

Problem Description Doctor D. are researching for a horrific weapon. The muzzle of the weapon is a circle. When it fires, rays form a cylinder that runs through the circle verticality in both side. If one cylinder of rays touch another, there will be…

题意:给你一些无限长的圆柱,知道圆柱轴心直线(根据他给的三个点确定的平面求法向量即可)与半径,判断是否有圆柱相交.如果没有,输出柱面最小距离. 一共只有30个圆柱,直接暴力一下就行. 判相交/相切:空间直线距离是否小于等于两圆柱半径和若无相交,求最小:空间直线距离-两圆柱半径和 #include <cstdio> #include <cstdlib> #include <cstring> #include <algorithm> #include <c…

大一学弟表示刚学过高数,轻松无压力. 我等学长情何以堪= = 求空间无限延伸的两个圆柱体是否相交,其实就是叉积搞一搞 详细点就是求两圆心的向量在两直线(圆心所在的直线)叉积上的投影 代码略挫,看他的吧http://blog.csdn.net/liuledidai/article/details/9494363…

Special Tetrahedron Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 328    Accepted Submission(s): 130 Problem Description Given n points which are in three-dimensional space(without repetition)…

空间异面直线的距离直接套模板. 求交点:求出两条直线的公共法向量,其中一条直线与法向量构成的平面 与 另一条直线 的交点即可.还是套模板o(╯□╰)o 1.不会有两条线平行的情况. 2.两条直线可能相交 #include <cstdio> #include <cstdlib> #include <cstring> #include <algorithm> #include <cmath> using namespace std; ; ; stru…

爆头 Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 1447    Accepted Submission(s): 601 Problem Description gameboy是一个CS高手,他最喜欢的就是扮演警察,手持M4爆土匪的头.也许这里有人没玩过CS,有必要介绍一下“爆头”这个术语:所谓爆头,就是子弹直接命中对方的头部,以秒杀…

Problem Description The sky was brushed clean by the wind and the stars were cold in a black sky. What a wonderful night. You observed that, sometimes the stars can form a regular polygon in the sky if we connect them properly. You want to record the…