Surround the Trees Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 11811    Accepted Submission(s): 4577 Problem Description There are a lot of trees in an area. A peasant wants to buy a rope to…

[科普]什么是BestCoder?如何参加? Surround the Trees Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 8113    Accepted Submission(s): 3095 Problem Description There are a lot of trees in an area. A peasant…

Surround the Trees 此题讨论区里大喊有坑,原谅我没有仔细读题还跳过了坑点. 题意:平面上有n棵树,选一些树用绳子围成一个包围圈,使得所有的树都在这个圈内. 思路:简单凸包入门题,凸包裸模板.在做这个题前建议先去学学:叉积,极角排序,三角形有向面积. 贴上代码以后再复习. struct node { double x,y; } a[N],p[N]; int n,tot;//总点数和凸包上的点数: double dis(node a,node b)//两点间距离 { return…

Surround the Trees Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 7164    Accepted Submission(s): 2738 Problem Description There are a lot of trees in an area. A peasant wants to buy a rope to…

Surround the Trees Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 9102    Accepted Submission(s): 3481 Problem Description There are a lot of trees in an area. A peasant wants to buy a rope to…

Surround the Trees Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 291    Accepted Submission(s): 140   Problem Description There are a lot of trees in an area. A peasant wants to buy a rope to…

Surround the Trees Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Problem Description There are a lot of trees in an area. A peasant wants to buy a rope to surround all these trees. So at first he must know the mi…

Surround the Trees Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 6728    Accepted Submission(s): 2556 Problem Description There are a lot of trees in an area. A peasant wants to buy a rope to…

Surround the Trees Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 7203    Accepted Submission(s): 2752 Problem Description There are a lot of trees in an area. A peasant wants to buy a rope to…

Surround the Trees Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 6812    Accepted Submission(s): 2594 Problem Description There are a lot of trees in an area. A peasant wants to buy a rope to…