Key = Int(Rnd * 49) * 2 + 1
s = 0: i = 1: j = 10
Do While i <= j
m = (i + j) \ 2
If Key = a(m) Then Exit Do
If Key < a(m) Then
j = m - 1: s = s * 2
Else
i = m + 1: s = s * 2 + 1
End If
Loop
数组元素a(1)到a(10)的值依次为“3,13,15,20,28,35,45,52,63,97”,执行该程序段后,s的值不可能为( )