MaxNumber

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace TheBiggestNumber
{
    class Program
    {
        static void Main(string[] args)
        {
            int num = int.Parse(Console.ReadLine());
            int max = 0;
            for (int i = 0; i < num; i++)
            {
                int z = int.Parse(Console.ReadLine());
                if(z > max)
                {
                    max = z;
                }

            }
            Console.WriteLine(max);
        }
    }
}