#include <bits/stdc++.h>
using namespace std;

main()
{

    int i, j, k, l;
    cout << "First matrix size(row column):" << endl;
    cin >> i >> j;
    cout << "Second matrix size(row column):" << endl;
    cin >> k >> l;

    int a[i][j], b[k][l], c[j][l];
    if (j == k)
    {
        cout << "First array:" << endl;
        for (int n = 0; n < i; n++)
        {
            for (int m = 0; m < j; m++)
            {
                cin >> a[n][m];
            }
        }

        cout << "Second array:" << endl;

        for (int n = 0; n < k; n++)
        {
            for (int m = 0; m < l; m++)
            {
                cin >> b[m][n];
            }
        }
        for (int t = 0; t < i; t++)
        {
            for (int u = 0; u < l; u++)
            {
                c[t][u]=0;
                for (int v = 0; v < j; v++)
                {
                    c[t][u] += a[t][v]*b[v][u];
                }

            }
            cout << endl;
        }

        for (int t = 0; t < j; t++)
        {
            for (int u = 0; u < l; u++)
            {
                cout<<" "<<c[t][u];

            }
            cout << endl;
        }
    }
}