题目链接:https://vjudge.net/problem/HDU-4185 Oil Skimming Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3016    Accepted Submission(s): 1262 Problem Description Thanks to a certain "green" re…

如下图:要求最多可以凑成多少对对象 大佬博客: https://blog.csdn.net/cillyb/article/details/55511666 https://blog.csdn.net/denghecsdn/article/details/77619308 https://www.cnblogs.com/wangjunyan/p/5563154.html 模板: int link[maxn],vis[maxn]; bool dfs(int x) { ; i <= num; i++)…

Oil Skimming Problem Description Thanks to a certain "green" resources company, there is a new profitable industry of oil skimming. There are large slicks of crude oil floating in the Gulf of Mexico just waiting to be scooped up by enterprising…

原文链接http://www.cnblogs.com/zhouzhendong/p/8231146.html 题目传送门 - HDU4185 题意概括 每次恰好覆盖相邻的两个#,不能重复,求最大覆盖次数.(引用大佬的http://blog.csdn.net/u011721440/article/details/38144339) 题解 我们对于每两个相邻#的建边(来回两条). 然后我们把格子黑白染色一下,发现黑点只会向白点连边,白点只会连向黑点连边,于是这个就是二分图了. 然后跑一跑匈牙利. 答…

题目大意: 统计相邻(上下左右)的‘#’的对数. 解法: 与题目hdu1507 Uncle Tom's Inherited Land*类似,需要用奇偶建图.就是行+列为奇数的作为X集合,偶尔作为Y集合,都是‘#’就连边.最后求最大匹配. 数据有点大,直接建图会出错(我试过).可以按照‘#’出现的顺序给顶点编号. #include<iostream> #include<cstdio> #include<cstring> #include<queue> #inc…

<span style="font-family: Arial; font-size: 14.3999996185303px; line-height: 26px;">//题意,在一个N*N的矩阵里寻找最多有多少个</span><span style="font-size: 14px; line-height: 26px; font-family: 'Courier New', Courier, monospace; white-space: p…

传送门:hdu4185 Oil Skimming 题意:n*n的方格里有字符*和#,只能在字符#上放1*2的板子且不能相交,求最多能放多少个. 分析:直接给#字符编号,然后相邻的可以匹配,建边后无向图跑匈牙利算法,最后得到的最大匹配数/2. #include <cstdio> #include <cstring> #include <string> #include <cmath> #include <iostream> #include <…

Oil Skimming Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3903    Accepted Submission(s): 1616 题目链接:acm.hdu.edu.cn/showproblem.php?pid=4185 Description: Thanks to a certain "green" resou…

Oil Skimming Time Limit:1000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Practice HDU 4185 Description Thanks to a certain "green" resources company, there is a new profitable industry of oil skimming. There ar…

Description Thanks to a certain "green" resources company, there is a new profitable industry of oil skimming. There are large slicks of crude oil floating in the Gulf of Mexico just waiting to be scooped up by enterprising oil barons. One such…