Блок-схемы

[qwot]

Пожалуйста,нарисуйте блок-схемы к этим программам

1)

const double E = 0.001;
            double sum1 = 0, z, s1, s2;
            int i = 1;
            do
            {
                s1 = Math.Pow(i, 2);
                i++;
                int j = 1;
                double sum2 = 0;
                do
                {
                    s2 = 4.5 / (Math.Pow(i * j, 3));
                    sum2 += s2;
                    j++;
                }
                while (Math.Abs(s2) > E);
                sum1 += s1 * sum2;
            }
            while (i < 9);
            z = sum1;

2)

  private void button1_Click(object sender, EventArgs e)
        {
            int i;
            Random rnd = new Random();
            dataGridView1.RowCount = Convert.ToInt32(30);
            for (i = 0; i < dataGridView1.RowCount; i++)
                dataGridView1.Rows[i].Cells[0].Value = rnd.Next(-100, 100);
        }

        private void button2_Click(object sender, EventArgs e)
        {
            int i, n, s;
            double A;
            A = Convert.ToDouble(textBox1.Text);
            n = dataGridView1.RowCount;
            int[] a = new int[n];
            for (i = 0; i < n; i++)
                a[i] = Convert.ToInt32(dataGridView1.Rows[i].Cells[0].Value);

            s = 0;
            for (i = 0; i < n; i++)
                if (a[i] > 0 && a[i] < A)
                    s++;
            label2.Text = "Количество элементов =" + s;

3)

 private void button1_Click(object sender, EventArgs e)
        {
            dataGridView1.RowCount = dataGridView2.RowCount = Convert.ToInt32(4);
            dataGridView1.ColumnCount = dataGridView2.ColumnCount = Convert.ToInt32(5);

            for (int i = 0; i < dataGridView1.ColumnCount; i++)
            {
                dataGridView1.Columns[i].Width = 50;
                dataGridView2.Columns[i].Width = 50;
            }
            Random rnd = new Random();
            for (int i = 0; i < dataGridView1.RowCount; i++)
                for (int j = 0; j < dataGridView1.ColumnCount; j++)
                    dataGridView1.Rows[i].Cells[j].Value = rnd.Next(-10, 10);
        }

        private void button2_Click(object sender, EventArgs e)
        {
            int[,] A = new int[4, 5];
            for (int i = 0; i < 4; i++)
                for (int j = 0; j < 5; j++)
                {
                    A[i, j] = Convert.ToInt32(dataGridView1.Rows[i].Cells[j].Value);
                    dataGridView2.Rows[i].Cells[j].Value = A[i, j];
                }

            for (int i = 0; i < 4; i++)
            {
                int k = A[i, 0];
                A[i, 0] = A[i, 4];
                A[i, 4] = k;
                dataGridView2.Rows[i].Cells[0].Value = A[i, 0];
                dataGridView2.Rows[i].Cells[4].Value = A[i, 4];