题目: A university network is composed of N computers. System administrators gathered information on the traffic between nodes, and carefully divided the network into two subnetworks in order to minimize traffic between parts. A disgruntled computer sc…

题目:http://poj.org/problem?id=2531 题意:一个矩阵,分成两个集合,求最大的 阻碍量 改的 一位大神的代码,比较简洁 #include<stdio.h> #include<string.h> int n,max; ][]; ]; void dfs(int x,int sum) { int i,t=sum; v[x]=; ; i<=n; i++) { ) t+=g[x][i]; else t-=g[x][i]; } if(t>max) max…

Network Saboteur POJ2531 Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 10351   Accepted: 4968 Description A university network is composed of N computers. System administrators gathered information on the traffic between nodes, and car…

Network Saboteur Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 9435   Accepted: 4458 Description A university network is composed of N computers. System administrators gathered information on the traffic between nodes, and carefully di…

题目: A university network is composed of N computers. System administrators gathered information on the traffic between nodes, and carefully divided the network into two subnetworks in order to minimize traffic between parts. A disgruntled computer sc…

题意: 给一个集合,有n个可能相同的元素,求出所有的子集(包括空集,但是不能重复). 思路: 看这个就差不多了.LEETCODE SUBSETS (DFS) class Solution { public: vector<vector<int>> subsets(vector<int>& nums) { sort(nums.begin(),nums.end()); DFS(,nums,tmp); ans.push_back(vector<int>()…

题意: 给一个集合,有n个互不相同的元素,求出所有的子集(包括空集,但是不能重复). 思路: DFS方法:由于集合中的元素是不可能出现相同的,所以不用解决相同的元素而导致重复统计. class Solution { public: vector<vector<int>> subsets(vector<int>& nums) { sort(nums.begin(),nums.end()); DFS(,nums,tmp); return ans; } void DF…

N皇后问题 Time Limit:1000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Description 在N*N的方格棋盘放置了N个皇后,使得它们不相互攻击(即任意2个皇后不允许处在同一排,同一列,也不允许处在与棋盘边框成45角的斜线上. 你的任务是,对于给定的N,求出有多少种合法的放置方法.   Input 共有若干行,每行一个正整数N≤10,表示棋盘和皇后的数量:如果N=0,表示结束.   Output 共…

图的深搜与广搜 一.介绍: p { margin-bottom: 0.25cm; direction: ltr; line-height: 120%; text-align: justify; orphans: 0; widows: 0 } p.western { font-family: "Calibri", serif; font-size: 10pt } p.cjk { font-family: "宋体"; font-size: 10pt } p.ctl {…

关于图的存储在上一篇文章中已经讲述,在这里不在赘述.下面我们介绍图的深度优先搜索遍历(DFS). 深度优先搜索遍历实在访问了顶点vi后,访问vi的一个邻接点vj:访问vj之后,又访问vj的一个邻接点,依次类推,尽可能向纵深方向搜索,所以称为深度优先搜索遍历.显然这种搜索方法具有递归的性质.图的BFS和树的搜索遍历很类似,只是其存储方式不同.         其基本思想为:从图中某一顶点vi出发,访问此顶点,并进行标记,然后依次搜索vi的每个邻接点vj:若vj未被访问过,则对vj进行访问和标记,然…