    Sub Main()
        Dim input As String() = Console.ReadLine.Split(" "c)

        Dim num1 As Integer = Convert.ToInt32(input(0))
        Dim num2 As Integer = Convert.ToInt32(input(1))

        Dim answer As Integer = num1 + num2

        If (num1 - num2) > answer Then
            answer = num1 - num2
        End If

        If (num1 * num2) > answer Then
            answer = num1 * num2
        End If

        Console.WriteLine(answer)
    End Sub