If (n = 0) Then c = 0 ElseIf (n = 1) Then c = 0 ElseIf (n = 2) Then c = 2 ElseIf (n = 3) Then c = 2 ElseIf (n = 4) Then c = 3 ElseIf (n = 5) Then c = 3 ElseIf (n = 6) Then c = 4 ElseIf (n = 7) Then c = 4 ElseIf (n = 8) Then c = 5 ElseIf (n = 9) Then c = 5 ElseIf (n = 10) Then c = 6 ElseIf (n = 11) Then c = 6 ElseIf (n = 12) Then c = 7 ElseIf (n = 13) Then c = 7 ElseIf (n = 14) Then c = 8 ElseIf (n = 15) Then c = 8