1. (2020·柯桥会考) 有如下程序段:

Dim s(1 To 81) As Integer, i As Integer, j As Integer, c As Integer, temp As Integer

c=0 : s(1) = 0

For i = 1 To 9

    For j = 1 To i

      temp = s(j * i)

      s(j * i) = j * i

      If temp <> s(j * i) And s(j * i) Mod 9 = 0 Then c = c + 1

    Next j

Next i

该程序段运行后，变量C的值为（   ）