Imports System

Public Class Test
	Public Shared Sub Main()
	
	Dim number as Integer
	Dim counter as Integer
	Dim value as Integer
	Dim greatest as Integer
	
	number = Console.readline()
	for counter = 1 to number
		value = console.readline()
		if (counter = 1 or value > greatest)
			greatest = value
		end if
	next
	Console.writeline("Greatest : {0}", greatest)
	End Sub
End Class