public class Zad2Tab2Zestaw {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        Random rnd = new Random();
        int row;
        int column;
        do {
            System.out.println("Enter the number of row");
            row = sc.nextInt();
            System.out.println("Enter the number of column");
            column = sc.nextInt();
        } while (row % 2 != 0 && row < 2 && column < 4);
        System.out.println(row + " " + column);
        int[][] tab = new int[row][column];
        for (int i = 0; i < row; i++) {
            for (int j = 0; j < column; j++) {
                tab[i][j] = rnd.nextInt(21) + 5;
            }
        }
        int[][] tab1 = new int[row][column];

        for (int i = 0; i < row; i++) {
            for (int j = 0; j < column; j++) {
                tab1[i][j] += 2 * tab[i][j];
            }
        }
        System.out.println("First array element: " + Arrays.deepToString(tab));
        System.out.println("Secondarray element: " + Arrays.deepToString(tab1));

        for (int i = 0; i < row; i++) {
            for (int j = 0; j < column; j++){
                tab[i][j]= tab[0][0] + tab1[tab.length -1 -i]
            }
        }
    }
}