Module Module1

	Sub Main()
		Dim tx As IO.TextReader = Console.In

		Dim n As Integer = Integer.Parse(tx.ReadLine())

		If n = 1 Then
			Console.WriteLine("Hello World")
		Else
			Dim a As Integer = Integer.Parse(tx.ReadLine())
			Dim b As Integer = Integer.Parse(tx.ReadLine())
			Console.WriteLine(a + b)
		End If
	End Sub

End Module
