DP(递归打印路径) UVA 662 Fast Food】的更多相关文章

题目传送门 题意:n个饭店在一条直线上,给了它们的坐标,现在要建造m个停车场,饭店没有停车场的要到最近的停车场,问所有饭店到停车场的最短距离 分析:易得区间(i, j)的最短距离和一定是建在(i + j) / 2的饭店,预处理出(i, j)的距离和sum[i][j],mark[i][j] 表示区间的最优停车场的位置,mid[i][j]表示(i + j) / 2.状态转移方程:dp[i][j] = max (dp[k-1][j-1] + sum[k][i]): 收获:学习递归打印路径 代码: /*…
Brackets Sequence Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 30383   Accepted: 8712   Special Judge Description Let us define a regular brackets sequence in the following way: 1. Empty sequence is a regular sequence. 2. If S is a re…
uva 紫书例题,这个区间dp最容易错的应该是(S)这种匹配情况,如果不是题目中给了提示我就忽略了,只想着左右分割忘记了这种特殊的例子. dp[i][j]=MIN{dp[i+1][j-1] | if(match(i,j) , dp[i][k]+dp[k+1][j] | i<=k<=j .}注意初始化dp[i][i]=1,表示1个字符最少需要一个才能匹配,dp[i+1][i]=0,因为可能只有两个字符使得i+1>j-1,我们可以认为中间是空字符已经匹配了. 打印路径利用了递归,很巧妙,lr…
  Compromise  In a few months the European Currency Union will become a reality. However, to join the club, the Maastricht criteria must be fulfilled, and this is not a trivial task for the countries (maybe except for Luxembourg). To enforce that Ger…
FatMouse believes that the fatter a mouse is, the faster it runs. To disprove this, you want to take the data on a collection of mice and put as large a subset of this data as possible into a sequence so that the weights are increasing, but the speed…
题目链接: http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=995 Problem D: The Necklace  My little sister had a beautiful necklace made of colorful beads. Two successive beads in the necklace shared a c…
Scandinavians often make vacation during the Easter holidays in the largest ski resort Are. Are provides fantastic ski conditions, many ski lifts and slopes of various difficulty profiles. However, some lifts go faster than others, and some are so po…
作为一个城市的应急救援队伍的负责人,你有一张特殊的全国地图.在地图上显示有多个分散的城市和一些连接城市的快速道路.每个城市的救援队数量和每一条连接两个城市的快速道路长度都标在地图上.当其他城市有紧急求助电话给你的时候,你的任务是带领你的救援队尽快赶往事发地,同时,一路上召集尽可能多的救援队. 输入格式: 输入第一行给出4个正整数N.M.S.D,其中N(2<=N<=500)是城市的个数,顺便假设城市的编号为0~(N-1):M是快速道路的条数:S是出发地的城市编号:D是目的地的城市编号.第二行给出…
链接:UVa 103 题意:给n维图形,它们的边长是{d1,d2,d3...dn},  对于两个n维图形,求满足当中一个的全部边长 依照随意顺序都一一相应小于还有一个的边长,这种最长序列的个数,而且打印随意一个最长子串的路径, 比如:a(9,5,7,3),b(6,10,8,2),c(9,7,5,1),a和b不满足,但c和b满足 分析:首先对没组边长从小到大排序,再对各组图形按最小边排序,再求最大子串, 对于打印路径,能够逆序循环,也可递归求解 #include<cstdio> #include…
option=com_onlinejudge&Itemid=8&page=show_problem&problem=1072">链接:UVa 10131 题意:给定若干大象的体重及智商值.求满足大象体重严格递增,智商严格递减的序列的最大个数. 并打印随意一组取得最大值的序列的大象编号 分析:这个是LIS的应用,仅仅只是推断条件有两个,能够先对大象的体重排序,可是要打印路径. 那就必须得回溯求路径.能够直接逆序循环求,当然递归也是一个好的选择 #include<…