#include <bits/stdc++.h>
using namespace std;
const int N = 110;
int a[N][N], b[N][N], c[N][N];
int n, m, p, q;

int main() {
    cin >> n >> m;
    for (int i = 0; i < n; i++)
        for (int j = 0; j < m; j++)
            cin >> a[i][j];

    cin >> p >> q;
    for (int i = 0; i < p; i++)
        for (int j = 0; j < q; j++)
            cin >> b[i][j];

    if (m != p)
        cout << "Error: " << m << " != " << p;
    else {
        cout << n << " " << q << endl;
        for (int i = 0; i < n; i++)
            for (int j = 0; j < q; j++)
                for (int k = 0; k < m; k++)
                    c[i][j] += a[i][k] * b[k][j];

        for (int i = 0; i < n; i++) {
            for (int j = 0; j < q; j++) {
                if (j == q - 1)
                    cout << c[i][j]; //注意每行最后一个数字后没有空格
                else
                    cout << c[i][j] << " ";
            }
            if (i != n - 1)
                cout << endl;
        }
    }
    return 0;
}