public static void task3() {
        int[][] matrixCalc = new int[2][2];
        int Calc = 0;
        for (int i = 0; i < 2; i++) {
            for (int j = 0; j < 2; j++) {
                matrixCalc[i][j] = (int)(Math.random() * 100);
                System.out.print(matrixCalc[i][j] + "\t");
                Calc+= matrixCalc[i][j];
            }
            System.out.println();
        }
        System.out.println(Calc);
        System.out.println();
    }