A - Max Sum Plus Plus (好题&&dp)】的更多相关文章

转载请注明出处,谢谢:http://www.cnblogs.com/KirisameMarisa/p/4302208.html   ---by 墨染之樱花 dp是竞赛中常见的问题,也是我的弱项orz,更要多加练习.看到邝巨巨的dp专题练习第一道是Max Sum Plus Plus,所以我顺便把之前做过的hdu1003 Max Sum拿出来又做了一遍 HDU 1003 Max Sum 题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1003 题目描述:…
Max Sum Plus Plus Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 34541    Accepted Submission(s): 12341 Problem Description Now I think you have got an AC in Ignatius.L's "Max Sum" problem…
Max Sum Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 161294    Accepted Submission(s): 37775 Problem Description Given a sequence a[1],a[2],a[3]......a[n], your job is to calculate the max s…
题目链接 http://acm.hdu.edu.cn/showproblem.php?pid=1024 题意:给定一个数组,求其分成m个不相交子段和的最大值. 这题有点问题其实m挺小的但题目并没有给出. dp[i][j]表示取第i 位的数共取了j段然后转移方程显然为 dp[i][j]=max(dp[i - 1][j]+a[j] , max(dp[j - 1][j - 1]~dp[i - 1][j - 1]))(大致意思是取第i位要么i-1位取了j个那么a[j]刚好能与i-1拼成一段,或者j -…
最近想学DP,锻炼思维,记录一下自己踩到的坑,来写一波详细的结题报告,持续更新. 题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1003 Problem Description Given a sequence a[1],a[2],a[3]......a[n], your job is to calculate the max sum of a sub-sequence. For example, given (6,-1,5,4,-7), the…
A - Max Sum Plus Plus  I think you have got an AC in Ignatius.L's "Max Sum" problem. To be a brave ACMer, we always challenge ourselves to more difficult problems. Now you are faced with a more difficult problem. Given a consecutive number seque…
HDU 1003    相关链接   HDU 1231题解 题目大意:给定序列个数n及n个数,求该序列的最大连续子序列的和,要求输出最大连续子序列的和以及子序列的首位位置 解题思路:经典DP,可以定义dp[i]表示以a[i]为结尾的子序列的和的最大值,因而最大连续子序列及为dp数组中的最大值.   状态转移方程:dp[1] = a[1]; //以a[1]为结尾的子序列只有a[1]:  i >= 2时, dp[i] = max( dp[i-1]+a[i],  a[i] ); dp[i-1]+a[i…
Max Sum Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 154155    Accepted Submission(s): 35958 Problem Description Given a sequence a[1],a[2],a[3]......a[n], your job is to calculate the max su…
这题的意思就是取m个连续的区间,使它们的和最大,下面就是建立状态转移方程 dp[i][j]表示已经有 i 个区间,最后一个区间的末尾是a[j] 那么dp[i][j]=max(dp[i][j-1]+a[j],max(dp[i-1][1..j-1])+a[j]) 看数据范围,1e6 肯定开不下数组,观察发现,dp[i][j]仅和dp[i][j-1]和dp[i-1][1..j-1]中最大值有关,即只和dp[i-1]有关 所以开滚动数组求解   复杂度可以通过开数组mmax[j]表示dp[i-1][1.…
Now I think you have got an AC in Ignatius.L's "Max Sum" problem. To be a brave ACMer, we always challenge ourselves to more difficult problems. Now you are faced with a more difficult problem.  Given a consecutive number sequence S 1, S 2, S 3,…