1.矩阵连(链)乘
问题描述
GXUOJ | 矩阵连乘 代码解答
#include<bits/stdc.h>
using namespace std;const int N50;
int m[N][N];
int p[N];
int n;int main(){cin>>n;//m[i][j] 存储的是从第 i 个矩阵到第 j 个矩阵这一段矩阵链相乘的最小…
简单的增删改查操作
select count(*) from user where accountadmin and password123456 select count(*) from user where account"admin" insert into user(account,password) values ("admin","777")
update user set password "666&…