using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

    static void Main(string[] args)

    { int n; straing s; 

     s=Console. ReadLine();

     n = int.Parse(s);

     int maxN=int.MinValue;

     for (int i = 1; i <= n; i++)

     { s = Console.ReadLine();

      int number = int.Parse(s);

      if ( number > maxN ) 

          maxN = number ; 

     }

     Console.WriteLine("Max :{0}", maxN) ;

    }