VBA如何统计同一类型的数据的总和

Sub count_test()
    Dim i As Integer
    Dim arrs() As Variant
    i = 1
    irow = UsedRange.Rows.Count
    icolumn = UsedRange.Columns.Count
    ReDim Preserve arrs(1 To irow, icolumn - 1)
    For j = 1 To irow Step 1
        strname = Cells(j, 1)
        isfind = False
        k = 0
        For k = 1 To irow
            If arrs(k, 0) = strname Then
                isfind = True
                Exit For
            End If
        Next k
        If isfind Then
            arrs(k, 1) = arrs(k, 1) + Cells(j, 2)
        Else
            arrs(i, 0) = Cells(j, 1)
            arrs(i, 1) = Cells(j, 2)
            i = i + 1
        End If
    Next j
    
    
    For k = 1 To irow
        If arrs(k, 0) <> "" Then
           Cells(k, 4) = arrs(k, 0)
           Cells(k, 5) = arrs(k, 1)
        End If
    Next k
    
End Sub