<题目链接> 题目大意: 给出一些点,让你求出将这些点全部围住需要的多长的绳子. Andrew算法 #include<iostream> #include<cstdio> #include<cstring> #include<algorithm> #include<cmath> using namespace std; struct node{ int x,y; }; node vex[]; bool cmp1(node a,node…
描述 Did you ever wonder what happens to your money when you deposit them to a bank account? All banks hold such deposits in various assets, such as gold, stocks, obligations, deposits in other banks, loans, bonds, and many others. Due to the financial…
1.HDU 1392 Surround the Trees 2.题意:就是求凸包周长 3.总结:第一次做计算几何,没办法,还是看了大牛的博客 #include<iostream> #include<cstring> #include<cmath> #include<queue> #include<algorithm> #include<cstdio> #include<cstdlib> #define F(i,a,b) f…
链接:http://acm.hdu.edu.cn/showproblem.php?pid=1348 Wall Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 3229    Accepted Submission(s): 919 Problem Description Once upon a time there was a greedy…
Surround the Trees Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 10345    Accepted Submission(s): 4009 Problem Description There are a lot of trees in an area. A peasant wants to buy a rope to…
链接:http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=453 Time Limit: 2 Seconds      Memory Limit: 65536 KB 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 minimal r…
Meeting Time Limit: 12000/6000 MS (Java/Others)    Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 3361    Accepted Submission(s): 1073 Problem Description Bessie and her friend Elsie decide to have a meeting. However, after Farmer Jo…
题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1711 Time Limit: 10000/5000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Problem Description Given two sequences of numbers : a[1], a[2], ...... , a[N], and b[1], b[2], ...... , b[M] (1 <=…
题目链接: http://acm.hdu.edu.cn/showproblem.php?pid=2222 题目大意:多个模式串.问匹配串中含有多少个模式串.注意模式串有重复,所以要累计重复结果. 解题思路: AC自动机模板题. 一开始使用LRJ的坑爹静态模板,不支持重复的模式串. 在做AC自动机+DP的时候,扒了zcwwzdjn大神的动态优化(失配指向root)写法,以及借鉴了网上的AC自动机模板, 搞出了这么一个支持重复串的模板. 注意在计算last后缀链接的时候,都会修改last->cnt=…
题目: 在每年的校赛里,所有进入决赛的同学都会获得一件很漂亮的t-shirt.但是每当我们的工作人员把上百件的衣服从商店运回到赛场的时候,却是非常累的!所以现在他们想要寻找最短的从商店到赛场的路线,你可以帮助他们吗? Input 输入包括多组数据.每组数据第一行是两个整数N.M(N<=100,M<=10000),N表示成都的大街上有几个路口,标号为1的路口是商店所在地,标号为N的路口是赛场所在地,M则表示在成都有几条路.N=M=0表示输入结束.接下来M行,每行包括3个整数A,B,C(1<…