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2017-09-30 17:09:00
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题目大意：输入n个x*y的矩阵，如果A矩阵为m*n,B矩阵为n*p。两个矩阵 的为结构体，出栈时出两个元素，对比判
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2021-12-01 16:20:08
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题目地址：点击打开链接思路：用map和stack即可解决AC代码：#include#include#include#includeusing namespace std;struct node{int row,col;};int main(){ int n,i,count; char c; map mar; cin>>n; for(i=0; i<n; i+
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2022-08-04 09:11:00
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Matrix Chain MultiplicationTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 620Accepted Submission(s): 426Problem DescriptionMatrix multiplication problem is a typical example of dynamical programming. Suppose you have to evaluate an expression like
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2021-07-29 16:23:41
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Descri
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2022-11-10 08:11:24
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题目大意：给出一系列矩阵，然后再给一系列表达式，求一个用
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2023-04-07 10:43:09
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#include#include#include#includeusing namespace std;struct Matrix{ int a,b; Matrix(int a=0, int b=0):a(a),b(b) {}}m[26];//定义了一个结构体变量，并把两个成员都初始化为0stack s;int main(){ int n; ci
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2022-08-05 15:45:53
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题目传送门题意：给出每个矩阵的行列，计算矩阵的表达式，如果错误输出error，否则输出答案分析：表达式求值，stack 容器的应用：矩阵的表达式求值A 矩阵是a * b，B 矩阵是b * c，则A * B 是a * c。遇到')'弹出两个矩阵相乘，错误的话直接break收获：以前做过了，现在会表达式...
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2015-04-20 20:58:00
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Matrix Chain MultiplicationSuppose you have to evaluate an on is ...
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2015-12-28 15:03:00
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题意：给定n个矩阵 然后给出每个矩阵的行数和列数 让你求出一个矩阵表达式的乘的次数
解题思路：栈
解题代码：
// File Name: uva442.c
// Author: darkdream
// Created Time: 2013年05月15日 星期三 21时15分38秒
#include<stdio.h>
#include<string.h>
#inclu
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2013-05-15 22:23:00
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Suppose you have to evaluate an expression like A*B*C*D*E where A,B,C,D and E are matrices. Since matrix multiplication is associative, the order in which multiplications are performed is arbitrary. However, the number of elementary multiplications needed strongly depends on the evaluation order you
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2013-07-04 19:26:00
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Matrix Chain Multiplication Suppose you have to evaluate an expression like A*B*C*D*E where A,B,C,D and E are matrices. Since matrix multiplication is
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2022-01-05 10:04:23
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ave to evaluate an expression l
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2022-11-28 19:17:45
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#include #include #include #include #include using namespace std;struct matrix{ int a, b
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2022-08-17 15:29:38
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假设您必须计算一个表达式，如ABCDE，其中A、B、C、D和E是矩阵。
由于矩阵乘法是关联的，所以执行乘法的顺序是任意的。
然而，所需的初等乘法的数量很大程度上取决于求值顺序
您可以选择。
例如，设A为5010矩阵，B为1020矩阵，C为205矩阵。有两个
计算ABC的不同策略，即（AB）C和A（B*C）。
第一个需要15000次基本乘法，但第二个只需要3500次。
你的工作是编写一个程序，确定所
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2023-10-04 13:30:43
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题目大意：给出n个矩阵和表达式，问该表达式是否正确，如果计算正确，输出计算了多少次解题思路：双端队列，遇到右括号时弹出后面的两个矩阵进行乘法，相乘时要注意顺序，是第二个出队列的乘上第一个出队列的。#include<cstdio>#include<algorithm>#include<deque>#include<map>#include<cstring>using namespace st
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2023-04-07 10:49:52
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题目大意：给你N个矩阵的规模，再给你矩阵链乘的表达书，输出乘法的次数。思路：利用栈来解表达式，遇到字母时，矩阵入栈，遇到右括号')'出栈并计算结果，再将结果入栈。
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2014-12-11 09:02:25
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Matrix Chain MultiplicationTime Limit: 1000MSMemory Limit: 65536KTotal Submissions: 1695Accepted: 1090DescriptionSuppose you have to evaluate an expression like A*B*C*D*E where A,B,C,D and E are matrices.Since matrix multiplication is associative, the order in which multiplications are performed is
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2012-10-27 21:49:00
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Matrix Chain MultiplicationTime Limit: 2 Seconds Memory Limit: 65536 KBMatrix multiplication problem is a typical example of dynamical programming.Suppose you have to evaluate an expression like A*B*C*D*E where A,B,C,D and E are matrices. Since matrix multiplication is associative, the order in whi.
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2012-11-09 14:57:00
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Matrix Chain MultiplicationTime Limit: 1000MS Memory Limit: 65536KTotal Submissions: 1695 Accepted: 1090DescriptionSuppose you have to evaluate an expression like A
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2023-03-22 06:42:51
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