Problem F: calculating the product of two matrices
Time limit: 1 Sec memory limit: 32 MB
Flower offering: 38 solution: 33
[flower offering] [wreath] [TK question bank]
Title Description
Calculate the product of two matrices, the first is a 2 * 3 matrix, the second is a 3 * 2 matrix, the result is a 2 * 2 matrix.
input
The input contains multiple groups of data. First, enter a 2 * 3 matrix, and then enter a 3 * 2 matrix.
output
Output the product of two matrices.
sample input
1 1 1
1 1 1
1 1
1 1
1 1
sample output
3 3
3 3

#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <cstring>
#include <fstream>
#include <string>
#include <cmath>
#include <algorithm>
#include <queue>
#include <ctime>
using namespace std;


typedef struct
{
    int n;
    int c;
}Num;

bool cmp(Num a, Num b)
{
    if (a.c != b.c) return a.c > b.c;
    return a.n < b.n;
}

int main()
{
#ifdef _DEBUG
    //freopen("data.txt", "r+", stdin);
    fstream cin("data.txt");
#endif // _DEBUG

    int a[2][3], b[3][2];
    while (cin >> a[0][0])
    {
        cin >> a[0][1] >> a[0][2] >> a[1][0] >> a[1][1] >> a[1][2];
        cin >> b[0][0] >> b[0][1] >> b[1][0] >> b[1][1] >> b[2][0] >> b[2][1];
        for (int i = 0; i < 2; ++i)
        {
            for (int res = 0, j = 0; j < 2; ++j)
            {
                res = a[i][0] * b[0][j] + a[i][1] * b[1][j] + a[i][2] * b[2][j];
                cout << res;
                if (j != 1)
                    cout << " ";
            }
            cout << endl;
        }
    }


#ifdef _DEBUG
    cin.close();
#ifndef _CODEBLOCKS
    system("pause");
#endif // !_CODEBLOCKS
#endif // _DEBUG

    return 0;
}
/**************************************************************
    Problem: 1970
    User: Sharwen
    Language: C++
    Result: Immortals
    Time:2 ms
    Memory:1704 kb
****************************************************************/