// question 3
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1114
{
    class Program
    {
        static void Main(string[] args)
        {
            int mispar , chiun , total = 0 ;
            for (int i = 0; i < 31; i++)
            {
                mispar = int.Parse(Console.ReadLine());
                while (mispar != 0)
                {
                    chiun = int.Parse(Console.ReadLine());
                    if (chiun > total)
                        total = chiun;
                    mispar = mispar - 1;
                }
                Console.WriteLine(" chiun maximaly = " +total);
            }

        }
    }
}