题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=2686 思路:多线程dp,参考51Nod 1084:http://www.51nod.com/onlineJudge/questionCode.html#!problemId=1084 注:这道题用滚动数组优化反而WA,压到三维即可 代码: #include <bits/stdc++.h> using namespace std; ][],dp[][][]; int main() { int n;…

Matrix Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 2153    Accepted Submission(s): 1135 Problem Description Yifenfei very like play a number game in the n*n Matrix. A positive integer numbe…

先说下codevs1169吧, 题目链接: http://codevs.cn/problem/1169/ 题意: 中文题诶~ 思路: 多线程 dp 用 dp[i][j][k][l] 存储一个人在 (i, j), 一个人在 (k, l) 位置时对答案的最大贡献, 那么动态转移方程式为: dp[i][j][k][l] = max(max(dp[i - 1][j][k - 1][l], dp[i - 1][j][k][l - 1]), max(dp[i][j - 1][k - 1][l], dp[i]…

题目链接:http://www.51nod.com/onlineJudge/questionCode.html#!problemId=1084 1084 矩阵取数问题 V2  基准时间限制:2 秒 空间限制:131072 KB 分值: 80 难度:5级算法题  收藏  关注 一个M*N矩阵中有不同的正整数,经过这个格子,就能获得相应价值的奖励,先从左上走到右下,再从右下走到左上.第1遍时只能向下和向右走,第2遍时只能向上和向左走.两次如果经过同一个格子,则该格子的奖励只计算一次,求能够获得的最大…

[题目描述] 设有N*N的方格图(N<=10),我们将其中的某些方格中填入正整数,而其他的方格中则放入数字0.某人从图的左上角的A 点出发,可以向下行走,也可以向右走,直到到达右下角的B点.在走过的路上,他可以取走方格中的数(取走后的方格中将变为数字0). 此人从A点到B 点共走两次,试找出2条这样的路径,使得取得的数之和为最大. [题目链接] http://noi.openjudge.cn/ch0206/8786/ [算法] 醉了,一开始以为很简单分成两次呗,走完一遍第一次路径经过的点记为0,…

http://acm.hdu.edu.cn/showproblem.php?pid=2686     Problem Description Yifenfei very like play a number game in the n*n Matrix. A positive integer number is put in each area of the Matrix.Every time yifenfei should to do is that choose a detour which…

Problem Description Given a matrix with n rows and m columns ( n+m ,) and you want to go to the number at bottom-right corner (n,m). And you must go right or go down every steps. Let the numbers you go through become an array a1,a2,...,a2k. The cost…

matrix Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 91    Accepted Submission(s): 62 Problem Description Given a matrix with n rows and m columns ( n+m is an odd number ), at first , you beg…

#1580 : Matrix 时间限制:1000ms 单点时限:1000ms 内存限制:256MB 描述 Once upon a time, there was a little dog YK. One day, he went to an antique shop and was impressed by a beautiful picture. YK loved it very much. However, YK did not have money to buy it. He begged…

做题记录:2016-08-15 15:47:07 背景 NOIP2008复赛提高组第三题 描述 小渊和小轩是好朋友也是同班同学,他们在一起总有谈不完的话题.一次素质拓展活动中,班上同学安排做成一个m行n列的矩阵,而小渊和小轩被安排在矩阵对角线的两端,因此,他们就无法直接交谈了.幸运的是,他们可以通过传纸条来进行交流.纸条要经由许多同学传到对方手里,小渊坐在矩阵的左上角,坐标(1,1),小轩坐在矩阵的右下角,坐标(m,n).从小渊传到小轩的纸条只可以向下或者向右传递,从小轩传给小渊的纸条只可以向上…