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++)…

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…

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…

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…

<题目链接> 题目大意: 给你一张图,图中有 '*' , '.' 两点,现在每次覆盖相邻的两个 '#' ,问最多能够覆盖几次. 解题分析: 无向图二分匹配的模板题,每个'#'点与周围四个方向的'#'建立匹配关系,然后用匈牙利跑一遍,因为匹配的两点各会进行相互匹配一次,所以最大匹配数为ans/2. #include <cstdio> #include <cstring> #include <algorithm> using namespace std; +;…

<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…

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: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 2917    Accepted Submission(s): 1210 Problem Description Thanks to a certain "green" resources company, there is a new profitabl…