a11   a12   a13   a14   a15 a21   a22   a23   a24   a25 a31   a32   a33   a34   a35 a41   a42   a43   a44   a45 a51   a52   a53   a54   a55 枚举矩阵每一列的区间,当成最长子串的dp方式就能过了 你把a21  a31  a41 看成一个元素,值是这三个元素的和,后面的列同理 https://www.cnblogs.com/GodA/p/5237061.html…

http://poj.org/problem?id=1050 我们已经知道求最大子段和的dp算法 参考here  也可参考编程之美有关最大子矩阵和部分. 然后将这个扩大到二维就是这道题.顺便说一下,有时候不要把问题想复杂了,有些问题只能靠暴力求解,而这道题是暴力加算法. 在这个题中,我们可以把二维压缩到一维然后求解最大子段.我们先枚举所求矩阵的起点行和结束行,然后把每一列的数据之和求出,用这些数据和就构造出一个一维的数组(代码中我没有明确表示出这个数组),然后用最大子段和的dp算法求解. 关于二…

传送门: http://poj.org/problem?id=1050 To the Max Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 52306   Accepted: 27646 Description Given a two-dimensional array of positive and negative integers, a sub-rectangle is any contiguous sub-arr…

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…

To the Max Time Limit: 1000MSMemory Limit: 10000K Total Submissions: 38573Accepted: 20350 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 t…

题意:求最大子矩阵和 利用dp[i]每次向下更新,构成竖起的单条矩阵,再按不小于零就加起来来更新,构成更大的矩阵 #include <iostream> #include<cstdio> #include<cstring> using namespace std; #define N 110 int map[N][N],dp[N]; int main(int argc, char** argv) { int n,i,j,k,maxn,ans; while(scanf(&…

题目链接 题意:给定N*N的矩阵,求该矩阵中和最大的子矩阵的和. 题解:把二维转化成一维,算下就好了. #include <cstdio> #include <cstring> #include <algorithm> using namespace std; typedef long long ll; ; ll ans=-,tmp,data[N][N],a[N]; ,ansj1=,ansi2=,ansj2=,tmp1=,tmp2=,n,m; int main() {…

转载请注明出处:http://blog.csdn.net/u012860063 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…

To the Max   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…

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. In this probl…