hdu4920 Matrix multiplication Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others) Total Submission(s): 568 Accepted Submission(s): 225 Problem Description Given two matrices A and B of size n×n, find the product o…
矩阵相乘,采用一行的去访问,比采用一列访问时间更短,根据数组是一行去储存的.神奇小代码. Matrix multiplication Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 1476 Accepted Submission(s): 650 Problem Description Given two matrices A…
先把两个矩阵全都mod3. S[i][j][k]表示第i(0/1)个矩阵的行/列的第k位是不是j(1/2). 然后如果某两个矩乘对应位上为1.1,乘出来是1: 1.2:2: 2.1:2: 2.2:1. 然后分这四种情况把bitset and 起来,然后用count()数一下个数,计算下对答案矩阵该位置的贡献即可. #include<cstdio> #include<bitset> using namespace std; #define N 801 int n,x; bitset&…
Matrix multiplication Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 820 Accepted Submission(s): 328 Problem Description Given two matrices A and B of size n×n, find the product of them. b…
Matrix multiplication Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others) Problem Description Given two matrices A and B of size n×n, find the…
Matrix Multiplication Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 17783 Accepted: 3845 Description You are given three n × n matrices A, B and C. Does the equation A × B = C hold true? Input The first line of input contains a posit…