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

namespace nevimzase
{
    class Program
    {
        static void Main(string[] args)
        {

           int n = 0;

            while (true)
            {
                Console.WriteLine("Zadej velikost v pole v intervalu <2,50>:");
                n = Int32.Parse(Console.ReadLine());
                if (n >= 2 && n <= 50)
                {
                    break;
                }
            }

            int[] pole = new int[n];

            for (int i = 0; i < n; i++)
            {
                Console.WriteLine("Zadej hodnotu na indexu: " + i);
                pole[i] = Int32.Parse(Console.ReadLine());
            }

            int soucet = 0;
            for (int i = 0; i < n; i++)
            {
                soucet = pole[i] + soucet;
            }

            double p = soucet / n;
            Console.WriteLine("Aritmeticky prumer je: " + p);

            double nejblizHodnota = 9999;
            int index = 0;
            for (int i = 0; i < n - 1; i++)
            {
                if (nejblizHodnota > (Math.Abs(pole[i] - p)))
                {
                    nejblizHodnota = Math.Abs(pole[i] - p);
                    index = i;
                }
            }

            Console.WriteLine("Prvek pole " + pole[index] + " na indexu" + index);
            Console.ReadLine();


        }
    }
}