Triathlon Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 6912   Accepted: 1790 Description Triathlon is an athletic contest consisting of three consecutive sections that should be completed as fast as possible as a whole. The first sect…

Description Triathlon is an athletic contest consisting of three consecutive sections that should be completed as fast as possible as a whole. The first section is swimming, the second section is riding bicycle and the third one is running. The speed…

Triathlon Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 4733   Accepted: 1166 Description Triathlon is an athletic contest consisting of three consecutive sections that should be completed as fast as possible as a whole. The first sect…

http://poj.org/problem?id=1755 题意:铁人三项,每个人有自己在每一段的速度,求有没有一种3条路线长度都不为0的设计使得某个人能严格获胜? 我们枚举每个人获胜,得到不等式组:s1/v1+s2/v2+s3/v3<s1/v1'+s2/v2'+s3/v3' 是三维半平面交?接着看 我们令两边同时除以s3得到 (s1/s3)*(1/v1)+(s2/s3)*(1/v2)+(1/v3)<(s1/s3)*(1/v1')+(s2/s3)*(1/v2')+(1/v3') 这样s1/s…

链接:http://poj.org/problem?id=3335     //大牛们常说的测模板题 ---------------------------------------------------------------- Rotating Scoreboard Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 5158   Accepted: 2061 Description This year, ACM/ICPC…

Triathlon [题目链接]Triathlon [题目类型]半平面交 &题解: 做了2道了,感觉好像套路,都是二分答案,判断半平面交是否为空. 还有刘汝佳的代码总是写const +& 但是我今天试了6次,3次const +& 和3次直接参数传值,发现时间只差了5ms左右,所以我觉得以后不用总是写const +&,因为写的代码长了,但又没有加快多少. &代码: #include <cstdio> #include <cmath> #incl…

看的这里:http://blog.csdn.net/non_cease/article/details/7820361 题意:铁人三项比赛,给出n个人进行每一项的速度vi, ui, wi;  对每个人判断,通过改变3项比赛的路程,是否能让该人获胜(严格获胜). 思路:题目实际上是给出了n个式子方程,Ti  = Ai * x + Bi * y + Ci * z , 0 < i < n 要判断第i个人能否获胜,即判断不等式组   Tj - Ti > 0,      0 < j <…

题目大意: 铁人三项分连续三段:游泳 自行车 赛跑 已知各选手在每个单项中的速度v[i],u[i],w[i] 设计每个单项的长度 可以让某个特定的选手获胜 判断哪些选手有可能获得冠军 输出n行 有可能获得冠军为Yes 不可能为No 设赛程总长为1,游泳x 自行车y,则赛跑为1-x-y 若选手 i 可以打败选手 j 则 x / v[ i ] + y / u[ i ] + ( 1-x-y ) / w[ i ] < x / v[ j ] + y / u[ j ] + ( 1-x-y ) / w[ j…

Triathlon Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 6461   Accepted: 1643 Description Triathlon is an athletic contest consisting of three consecutive sections that should be completed as fast as possible as a whole. The first sect…

Art Gallery Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 6668   Accepted: 2725 Description The art galleries of the new and very futuristic building of the Center for Balkan Cooperation have the form of polygons (not necessarily conve…