1. (2019高二下·浙江月考) 某VB程序段如下：

    For i = 1 To 7

       b(i) = 1

Next i

For i = 1 To 7

    For j = 1 To i - 1

      If a(i)>a(j) and b(i)<=b(j) Then

        b(i) = b(j) + 1

      End If

    Next j

      If b(i) > max Then max = b(i)

Next i

数组元素a(1)到a(7)的值依次“50,10,14,64,47,70,82”，执行该程序段后，变量max的值是（   ）