using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("n = ");

        var n = int.Parse(Console.ReadLine());

        var max = -100000000000000000;

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

        {

            var num = int.Parse(Console.ReadLine());

            if (num > max)

            {

                max = num;

            }

        }

        Console.WriteLine("max = " + max);

    }

}

​