
矩阵乘法
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鸡冠花12138
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zcmu-1184(矩阵乘法)
1184: 帮我求算一下斐波那契数吧Time Limit: 1 Sec Memory Limit: 128 MBSubmit: 221 Solved: 42[Submit][Status][Web Board]DescriptionAYY小朋友对斐波那契数非常感兴趣,他知道f[1]=1,f[2]=1,并且从第三个斐波那契数开始f[n]=f[n-2]+f[n-1](n>=3),可是AYY小...原创 2018-04-11 11:00:37 · 561 阅读 · 3 评论 -
矩阵的乘法和快速幂的一些理解(适用初学者)
矩阵是线性代数的知识。。。后悔没好好学了。。。第一部分:矩阵的基础知识1.结合性(AB)C=A(BC).2.对加法的分配性(A+B)C=AC+BC,C(A+B)=CA+CB.3.对数乘的结合性k(AB)=(kA)B=A(kB).4.关于转置(AB)'=B'A'.一个矩阵就是一个二维数组,为了方便声明多个矩阵,我们一般会将矩阵封装一个类或定义一个矩阵的结构体...原创 2018-04-11 18:00:30 · 11010 阅读 · 11 评论 -
矩阵乘法和快速幂的一些优化和剪枝
矩阵相乘一般会用O(n^3)的方法。。。配合剪枝【添条件,设门槛。。。】//O(n^3)算法 #include <iostream> #include <cstdio> #include <cstring> #include <cstdlib> #include <cmath> #include <algor...原创 2018-04-11 18:12:33 · 324 阅读 · 0 评论 -
hdu-1005
Number SequenceTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 195195 Accepted Submission(s): 48940Problem DescriptionA number sequence is de...原创 2018-05-07 13:58:45 · 321 阅读 · 2 评论 -
hdu-2842(矩阵快速幂+推导公式)
Chinese RingsTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1264 Accepted Submission(s): 747Problem DescriptionDumbear likes to play the Chi...原创 2018-07-15 17:01:10 · 765 阅读 · 0 评论 -
hdu6395(分段矩阵快速幂)
SequenceTime Limit: 4000/2000 MS (Java/Others) Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 1039 Accepted Submission(s): 388Problem DescriptionLet us define a sequence ...原创 2018-08-14 13:44:17 · 812 阅读 · 0 评论 -
hdu6030(推导+矩阵快速幂)
Happy NecklaceTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 1734 Accepted Submission(s): 730Problem DescriptionLittle Q wants to b...原创 2018-08-15 11:34:09 · 808 阅读 · 0 评论 -
矩阵快速幂模板~
?#include<bits/stdc++.h>using namespace std; #define e exp(1)#define pi acos(-1)#define mod 1000000007#define inf 0x3f3f3f3f#define ll long long#define ull unsigned long long#define m...原创 2018-09-16 21:34:02 · 159 阅读 · 0 评论 -
ACM-ICPC 2018 焦作赛区网络预赛 Poor God Water(递推+构造矩阵)
God Water likes to eat meat, fish and chocolate very much, but unfortunately, the doctor tells him that some sequence of eating will make them poisonous.Every hour, God Water will eat one kind of fo...原创 2018-09-16 21:56:51 · 259 阅读 · 5 评论