题目链接:hdu_5900_QSC and Master 题意: 有n个数,每个数有个key值,有个val,如果相邻的两个数的key的gcd大于1那么就可以得到这两个数的val的和,现在问怎么取使得到的和最大 注意:1 2 2 4,第2个和第3个取掉后,第一个就和第4个相邻了 题解: 这是一道区间DP题,之前没做过,比赛时没有想出怎么来DP 考虑区间dp[i][j],枚举i到j的k,然后更新一下当前的最大值 如果gcd(i,j)>1,如果i+1=j,说明是相邻的,直接相加,如果dp[i+1][j…

题目链接 http://acm.hdu.edu.cn/showproblem.php?pid=5900 Problem Description Every school has some legends, Northeastern University is the same. Enter from the north gate of Northeastern University,You are facing the main building of Northeastern Universi…

QSC and Master Problem Description   Every school has some legends, Northeastern University is the same. Enter from the north gate of Northeastern University,You are facing the main building of Northeastern University.Ninety-nine percent of the stude…

题目 Source http://acm.hdu.edu.cn/showproblem.php?pid=5900 Description Every school has some legends, Northeastern University is the same. Enter from the north gate of Northeastern University,You are facing the main building of Northeastern University.…

题目链接   http://acm.hdu.edu.cn/showproblem.php?pid=5900 题意:给出序列$A_{i}.key$和$A_{i}.value$,若当前相邻的两个数$A_{i}.key$和$A_{i+1}.key$的最大公约数大于1,则可以把这两个数消去,同时消去$A_{i}.value$和$A_{i+1}.value$,每次消去得到的分数为$A_{i}$和$A_{i+1}$的value值,问最大可能得分. 注意:当$A_{i}$和$A_{i+1}被$消去后,$A_{…

QSC and Master Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 859    Accepted Submission(s): 325 Problem Description Every school has some legends, Northeastern University is the same. Enter…

区间dp专题练习 题意 1.Equal Sum Partitions ? 这嘛东西,\(n^2\)自己写去 \[\ \] \[\ \] 2.You Are the One 感觉自己智力被吊打 \(dp[i][j]\)表示 , 对于当前的一个空栈 , \(i\)到\(j\)这一段都出栈的最小花费 显然是长得一副区间(诡)dp(异)的样子 , 如何转移呢?(建议自己想想吧) 对于一个\(dp[i][j]\),因为这个\(i\)必须是最先入栈的 , 所以我们可以枚举它的出栈时间\(k\) , 那么总贡…

4380: [POI2015]Myjnie Time Limit: 40 Sec  Memory Limit: 256 MBSec  Special JudgeSubmit: 162  Solved: 82[Submit][Status][Discuss] Description 有n家洗车店从左往右排成一排,每家店都有一个正整数价格p[i].有m个人要来消费,第i个人会驶过第a[i]个开始一直到第b[i]个洗车店,且会选择这些店中最便宜的一个进行一次消费.但是如果这个最便宜的价格大于c[i],…

Blocks Time Limit: 5000MS   Memory Limit: 65536K Total Submissions: 5252   Accepted: 2165 Description Some of you may have played a game called 'Blocks'. There are n blocks in a row, each box has a color. Here is an example: Gold, Silver, Silver, Sil…

http://lightoj.com/volume_showproblem.php?problem=1422 做的第一道区间DP的题目,试水. 参考解题报告: http://www.cnblogs.com/ziyi--caolu/p/3236035.html http://blog.csdn.net/hcbbt/article/details/15478095 dp[i][j]为第i天到第j天要穿的最少衣服,考虑第i天,如果后面的[i+1, j]天的衣服不要管,那么dp[i][j] = dp[i…