Pipe Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 9493   Accepted: 2877 Description The GX Light Pipeline Company started to prepare bent pipes for the new transgalactic light pipeline. During the design phase of the new pipe shape th…

题意: 题意很好理解,从左边射过来的光线,最远能经过管道到右边多少距离. 分析: 光线一定经过一个上端点和一个下端点,这一点很容易想到.然后枚举上下端点即可 #include <iostream> #include <cstdio> #include <cstring> #include <algorithm> #include <cmath> #define eps 1e-8 #define INF 1e9 #define OK sgn(tmp…

链接: http://poj.org/problem?id=1039 http://acm.hust.edu.cn/vjudge/contest/view.action?cid=22013#problem/B Pipe Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 8350   Accepted: 2501 Description The GX Light Pipeline Company started to prep…

题目传送门 题意:一根管道,有光源从入口发射,问光源最远到达的地方. 分析:黑书上的例题,解法是枚举任意的一个上顶点和一个下顶点(优化后),组成直线,如果直线与所有竖直线段有交点,则表示能穿过管道. /************************************************ * Author :Running_Time * Created Time :2015/10/31 星期六 10:28:12 * File Name :POJ_1039.cpp ***********…

Pipe Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 8280   Accepted: 2483 Description The GX Light Pipeline Company started to prepare bent pipes for the new transgalactic light pipeline. During the design phase of the new pipe shape th…

Treasure Hunt Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 6328   Accepted: 2627 Description Archeologists from the Antiquities and Curios Museum (ACM) have flown to Egypt to examine the great pyramid of Key-Ops. Using state-of-the-ar…

题目: http://poj.org/problem?id=1408 http://acm.hust.edu.cn/vjudge/contest/view.action?cid=22013#problem/C Fishnet Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 1604   Accepted: 1026 Description A fisherman named Etadokah awoke in a very…

http://poj.org/problem?id=1039 题意 有一宽度为1的折线管道,上面顶点为(xi,yi),所对应的下面顶点为(xi,yi-1),假设管道都是不透明的,不反射的,光线从左边入口处的(x1,y1),(x1,y1-1)之间射入,向四面八方传播,求解光线最远能传播到哪里(取x坐标)或者是否能穿透整个管道. 分析 最远的直线必定经过一个上折点和一个下折点.枚举这两个点即可. #include <iostream> #include <stdio.h> #inclu…

Treasure Hunt Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 4797   Accepted: 1998 Description Archeologists from the Antiquities and Curios Museum (ACM) have flown to Egypt to examine the great pyramid of Key-Ops. Using state-of-the-ar…

Treasure Hunt Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 7857   Accepted: 3247 Description Archeologists from the Antiquities and Curios Museum (ACM) have flown to Egypt to examine the great pyramid of Key-Ops. Using state-of-the-ar…