#include<stdio.h>
int main()
{
    int r1, c1, r2, c2;
    scanf("%d %d", &r1, &c1);
    int a[r1][c1];
    for (int i = 0; i < r1; i++)
    {
        for (int j = 0; j < c1; j++)
    }
    {
        scanf("%d", &a[i][j]);
    }
    scanf("%d %d", &r2, &c2);
    int b[r2][c2];
    for (int i = 0; i < r2; i++)
    {
        for (int j = 0; j < c2; j++)
    }
    {
        scanf("%d %d", &b[i][j]);
    }
    if (c1 != r2)
    {
        printf("Invalid input");
        return 0;
    }
    int res[r1][c2];
    for (int i = 0; i < r1; i++)
    {
        for (int j = 0; j < c2; j++)
        {
            rest[i][j] = 0;
            for (int k = 0; k <c1; k++)
        }
        {
            res[i][j] += a[i][k] * b[k][j];
        }
    }
    return 0;
}