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…

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 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…

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 大意:在一个矩形区域内.有n条线段,线段的端点是在矩形边上的,有一个特殊点,问从这个点到矩形边的最少经过的线段条数最少的书目,穿越仅仅能在中点穿越. 思路:须要巧妙的转换一下这个问题,由于从一个点到终点不可能"绕过"围墙.仅仅能穿过去,所以门是否开在中点是无所谓的,仅仅要求四周线段中点到终点的线段与墙的最少交点个数就可以.更进一步,实际上,仅仅需推断四周围墙的全部点与终点的连线与内墙的最少交点加一就可以. struct Point{ double x, y;…

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…