Treasure Hunt Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 8192   Accepted: 3376 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…

http://poj.org/problem?id=1066 题目大意:给一个由墙围成的正方形,里面有若干墙,每次破墙只能从(当前看到的)墙的中点破,求最少破多少墙才能看到宝藏. —————————————————————— 显然枚举起点然后画一条以终点为端点的线,求线和多少墙相交即可. 但是我不会证明:这里有证明:https://www.cnblogs.com/anrainie/p/4049844.html 然后有该证明我们得到只要起点为这些线的端点即可. #include<cstdio>…

嘟嘟嘟 题意看题中的图就行:问你从给定的点出发最少需要穿过几条线段才能从正方形中出去(边界也算). 因为\(n\)很小,可以考虑比较暴力的做法.枚举在边界中的哪一个点离开的.也就是枚举四周的点\((x, y)\),并和起点\((x_0, y_0)\)连成线段,求和多少条线段相交. 但是因为点可以是实数,所以不知道怎么枚举.不过想想就知道,同一个区间中的点是等价的.因此我们只要枚举线段的端点即可. 至于判断线段相交,用叉积实现:对于线段\(AB\)和\(CD\),如果\((\overrightar…

Treasure Hunt time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Captain Bill the Hummingbird and his crew recieved an interesting challenge offer. Some stranger gave them a map, potion of tel…

H - Treasure Hunt IV Time Limit:2000MS     Memory Limit:65536KB     64bit IO Format:%lld & %llu Description Alice is exploring the wonderland, suddenly she fell into a hole, when she woke up, she found there are b - a + 1 treasures labled a from b in…

E - Treasure Hunt I Time Limit:2000MS Memory Limit:65536KB Description Akiba is a dangerous country since a bloodsucker living there. Sometimes the bloodsucker will appear and kill everyone who isn't at his hometown. One day, a brave person named CC…

题目描述 Once there was a pig, which was very fond of treasure hunting. The treasure hunt is risky, and it is inadvertently caught in the peach blossom trap. Fortunately, it has got a map of peach blossom trap. You can think of it as a matrix of R row an…

Treasure Hunt I Time Limit: 2 Seconds      Memory Limit: 65536 KB Akiba is a dangerous country since a bloodsucker living there. Sometimes the bloodsucker will appear and kill everyone who isn't at his hometown. One day, a brave person named CC finds…

Treasure Hunt IV Time Limit: 2 Seconds      Memory Limit: 65536 KB Alice is exploring the wonderland, suddenly she fell into a hole, when she woke up, she found there are b - a + 1 treasures labled a from b in front of her.Alice was very excited but…

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…