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DIM Pts(1 TO 20,1 TO 2)
FOR x = 1 TO 5
¡¡FOR y = 1 TO 4
¡¡¡¡LET n = n+1
¡¡¡¡LET Pts(n,1) = x
¡¡¡¡LET Pts(n,2) = y
¡¡NEXT Y
NEXT X
FOR i = 1 TO 20
¡¡FOR j = i + 1 TO 20
¡¡¡¡FOR k = j + 1 TO 20
¡¡¡¡¡¡IF (Pts(j,1)-Pts(i,1))*(Pts(k,2)-Pts(i,2))-(Pts(j,2)-Pts(i,2))*(Pts(k,1)-Pts(i,1)) <> 0 THEN LET Count = Count + 1
¡¡¡¡NEXT K
¡¡NEXT J
NEXT I
PRINT Count
END
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Option Explicit
'16(0,3) 17(1,3) 18(2,3) 19(3,3) 20(4,3)
'11(0,2) 12(1,2) 13(2,2) 14(3,2) 15(4,2)
'06(0,1) 07(1,1) 08(2,1) 09(3,1) 10(4,1)
'01(0,0) 02(1,0) 03(2,0) 04(3,0) 05(4,0)
Sub Macro1()
Cells(1, 1).Value = 0
Dim n1 As Integer, n2 As Integer, n3 As Integer
Dim n1x As Integer, n1y As Integer
Dim n2x As Integer, n2y As Integer
Dim n3x As Integer, n3y As Integer
For n1 = 1 To 20 - 2
n1x = xy(n1, 1): n1y = xy(n1, 2)
For n2 = n1 + 1 To 20 - 1
n2x = xy(n2, 1): n2y = xy(n2, 2)
For n3 = n2 + 1 To 20
n3x = xy(n3, 1): n3y = xy(n3, 2)
If (n2y - n1y) * (n3x - n2x) <> (n3y - n2y) * (n2x - n1x) Then
Cells(1, 1).Value = Cells(1, 1).Value + 1
Cells(Cells(1, 1).Value, 2).Value = Str(n1) + "(" + Str(n1x) + "," + Str(n1y) + ")"
Cells(Cells(1, 1).Value, 3).Value = Str(n2) + "(" + Str(n2x) + "," + Str(n2y) + ")"
Cells(Cells(1, 1).Value, 4).Value = Str(n3) + "(" + Str(n3x) + "," + Str(n3y) + ")"
End If
Next n3
Next n2
Next n1
End Sub
Private Function xy(ByVal n As Integer, ByVal j As Integer) As Integer
If j = 1 Then
xy = (n - 1) Mod 5
Else
xy = (n - 1) \ 5
End If
End Function
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½½¿Êbasic ¤Ç

INPUT n1,n2
let s=0
FOR a=0 TO n1-1
FOR b=0 TO n2-1
FOR c=0 TO n1-1
FOR d=0 TO n2-1
if a=c and b=d then goto 30
FOR e=0 TO n1-1
FOR f=0 TO n2-1
if e=a and f=b then goto 10
if e=c and f=d then goto 10
IF ABS((c-a)*(f-b)-(e-a)*(d-b))/2=0 THEN GOTO 10
let s=s+1
10 next f
20 next e
30 next d
40 next c
50 next b
60 next a
print s/6
END

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