Max_Number

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

namespace Max_Number
{
    class Max_Number
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            int first = int.Parse(Console.ReadLine());
            int max = first;
            for (int i = 2; i <= n; i++)
            {
                int num = int.Parse(Console.ReadLine());
                if (num > max) max = num;
            }
            Console.WriteLine(max);
        }
    }
}