【HDOJ 1086】模板水过

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【HDOJ 1086】模板水过

You can Solve a Geometry Problem too Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 8693 Accepted Submission(s): 4232 Problem Description Many geometry(几何)problems were designed in the ACM/I…

HDOJ(2056)&HDOJ(1086)

Rectangles HDOJ(2056) http://acm.hdu.edu.cn/showproblem.php?pid=2056 题目描述:给2条线段,分别构成2个矩形,求2个矩形相交面积. 算法:先用快速排斥判断2个矩形是否相交.若不相交,面积为0.若相交,将x坐标排序去中间2个值之差,y坐标也一样.最后将2个差相乘得到最后结果. 这题是我大一的时候做过的,当时一看觉得很水,写起来发现其实没我想的那么水.分了好几类情况没做出来.今天看了点关于判断线段相交的知识,想起了这题便拿来练…

最小费用最大流模板 poj 2159 模板水题

Going Home Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 15944 Accepted: 8167 Description On a grid map there are n little men and n houses. In each unit time, every little man can move one unit step, either horizontally, or vertical…

2015百度之星1002 查找有序序列（RMQ+主席树模板水过）

题意:求在数列中能找到几个个长度为k 的区间,里面的 k 个数字排完序后是连续的. 思路:枚举范围,判断区间内是否有重复的数字(主席树),没有的话求区间最大-区间最小(RMQ),判断是否等于K,是的话sum++,否则continue: 主席树:原理不太懂,暂时还没能到能研究的水平,不过知道时间复杂度之类的,以后希望能用到的时候不是敲完上交了才知道超时了.... 时间复杂度建树 O(n): 更新 O(log(n)): 查询 O(log(n)): #include <io…

HDOJ 1070 Milk(水题，考英文的)

Problem Description Ignatius drinks milk everyday, now he is in the supermarket and he wants to choose a bottle of milk. There are many kinds of milk in the supermarket, so Ignatius wants to know which kind of milk is the cheapest. Here are some rule…

hdu 2642 二维树状数组单点更新区间查询模板水题

Stars Time Limit: 5000/2000 MS (Java/Others) Memory Limit: 32768/65536 K (Java/Others) Total Submission(s): 785 Accepted Submission(s): 335 Problem Description Yifenfei is a romantic guy and he likes to count the stars in the sky. To make the p…

Hdoj 1086.You can Solve a Geometry Problem too 题解

Problem Description Many geometry(几何)problems were designed in the ACM/ICPC. And now, I also prepare a geometry problem for this final exam. According to the experience of many ACMers, geometry problems are always much trouble, but this problem is ve…