hdu 5045 Contest(状态压缩DP)】的更多相关文章

题解:我们使用一个二位数组dp[i][j]记录进行到第i个任务时,人组合为j时的最大和(这里的j我们用二进制的每位相应一个人). 详细见代码: #include <iostream> #include <cstdio> #include <cstring> #include <cmath> using namespace std; typedef long long ll; double s[11][1010]; double dp[1010][1050];…
作者:jostree 转载请注明出处 http://www.cnblogs.com/jostree/p/4092176.html 题目链接:hdu 5094 Maze 状态压缩dp+广搜 使用广度优先搜索,dp[key][x][y]表示在拥有钥匙key并在坐标(x,y)时需要的最少的步数,key的二进制的第i位等于1则代表拥有第i把钥匙. 需要注意以下几点: 1.可能存在同一坐标有多把钥匙. 2.墙和门是在两个坐标间进行移动时的障碍,并不在坐标点上,因此两个方向的移动都要加入wall数组. 2.…
状态压缩dp的第一题! 题意:Mr ACMer想要进行一次旅行,他决定访问n座城市.Mr ACMer 可以从任意城市出发,必须访问所有的城市至少一次,并且任何一个城市访问的次数不能超过2次.n座城市间有m条道路,每条道路都有一个费用.求Mr ACMer 完成旅行需要花费的最小费用.如果不能完成旅行,则输出-1. 由于城市可以最多被访问两次,所以我们用3进制数来状态压缩,每一位可以存在0,1,2这三个数.因此,如果表示状态的数在这n位上每一位都大于等于1,则就是符合题意的解,我们要从这些解中遴选出…
Tunnels Time Limit: 3000/1500 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Problem Description Bob is travelling in Xi’an. He finds many secret tunnels beneath the city. In his eyes, the city is a grid. He can’t enter a grid with a b…
题意: 给n个点m条无向边. 要求每个点最多走两次,要访问所有的点给出要求路线中边的权值总和最小. 思路: 三进制状态压缩DP,0代表走了0次,1,2类推. 第一次弄三进制状态压缩DP,感觉重点是对数据的预处理,利用数组分解各个位数,从而达到类似二进制的目的. 然后就是状态的表示,dp[s][i]表示状态s时到达i的最优值. 状态转移也一目了然,不废话. #include<stdio.h> #include<string.h> #include<algorithm> u…
Problem Description In the ACM International Collegiate Programming Contest, each team consist of three students. And the teams are given 5 hours to solve between 8 and 12 programming problems.  On Mars, there is programming contest, too. Each team c…
Contest Problem Description In the ACM International Collegiate Programming Contest, each team consist of three students. And the teams are given 5 hours to solve between 8 and 12 programming problems. On Mars, there is programming contest, too. Each…
Pieces Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others) Total Submission(s): 1418    Accepted Submission(s): 724 Problem Description You heart broke into pieces.My string broke into pieces.But you will recover one…
Necklace Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 327680/327680 K (Java/Others)Total Submission(s): 522    Accepted Submission(s): 168 Problem Description One day , Partychen gets several beads , he wants to make these beads a necklace…
Pebbles Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 795    Accepted Submission(s): 439 Problem Description You're given an unlimited number of pebbles to distribute across an N x N game boar…