Imports System

Public Module Module1

    Public Sub Main()

        even()

    end sub

    private sub even()

        dim i as decimal

        dim n1 as decimal

        dim i2 as decimal

        n1= console.ReadLine()

        i = n1

        for i2 = 1 to n1

            If i Mod 2 = 0 Then

                console.Write(i & "+")

            end if

            i = n1 - 1

    next

    End Sub

End Module