题目链接 Problem Description Given a two-dimensional array of positive and negative integers, a sub-rectangle is any contiguous sub-array of size 1 x 1 or greater located within the whole array. The sum of a rectangle is the sum of all the elements in th…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1081 To The Max Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 8839    Accepted Submission(s): 4281 Problem Description Given a two-dimensional ar…

Problem Description Given a two-dimensional array of positive and negative integers, a sub-rectangle is any contiguous sub-array of size 1 x 1 or greater located within the whole array. The sum of a rectangle is the sum of all the elements in that re…

Description Given a two-dimensional array of positive and negative integers, a sub-rectangle is any contiguous sub-array of size 1*1 or greater located within the whole array. The sum of a rectangle is the sum of all the elements in that rectangle. I…

题目地址:http://poj.org/problem?id=1050 Description Given a two-dimensional array of positive and negative integers, a sub-rectangle is any contiguous sub-array of size 1*1 or greater located within the whole array. The sum of a rectangle is the sum of a…

免费馅饼 Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 26110    Accepted Submission(s): 8905 Problem Description 都说天上不会掉馅饼,但有一天gameboy正走在回家的小径上,忽然天上掉下大把大把的馅饼.说来gameboy的人品实在是太好了,这馅饼别处都不掉,就掉落在他身旁的1…

To The Max Problem's Link: http://acm.hdu.edu.cn/showproblem.php?pid=1081 Mean: 求N*N数字矩阵的最大子矩阵和. analyse: 乍看题目意思很简单,但对于刚开始学DP的新手来说也不是很简单. 这道题使用到的算法是:预处理+最大连续子串和 如果会做最大连续子串和,那么理解这题就相对简单一些,若不知道最大连续子串和,建议先看一下这两题: http://acm.hdu.edu.cn/showproblem.php?pi…

HDU 1081 题意:给定二维矩阵,求数组的子矩阵的元素和最大是多少. 题解:这个相当于求最大连续子序列和的加强版,把一维变成了二维. 先看看一维怎么办的: int getsum() { ; int ans=-1e9; ;i<=n;i++){ ) tot=; tot+=a[i]; if(tot>ans) ans=tot; } return ans; } 这种做法太棒了!短短几行,就能解决最大子序列和这个问题.其实这几行代码值得深思.而且这是个在线算法,输入数据及时能给出结果,感觉不能归于动归…

To The Max Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 7620    Accepted Submission(s): 3692 Problem Description Given a two-dimensional array of positive and negative integers, a sub-rectang…

Description Given a two-dimensional array of positive and negative integers, a sub-rectangle is any contiguous sub-array of size 1*1 or greater located within the whole array. The sum of a rectangle is the sum of all the elements in that rectangle. I…