using System;

public class Program

{

    public static void Main()

    {

        int x1 = 0;

        int x2 = 0;

        Console.WriteLine("Enter n:");

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

        Console.WriteLine("Enter number:");

        int a = int.Parse(Console.ReadLine());

        int sum =a;

        int min = Int32.MaxValue;

        int index = 0;

        int c = 0;

        for(int i=2; i<=n; i++)

        {

            Console.WriteLine("Enter number:");

            int b = int.Parse(Console.ReadLine());

            sum = sum+b;

            int hefrash = Math.Abs(a-b);

            if(i==n/2+1)

                c= b;

            if(hefrash<min)

            {

                min = hefrash;

                index = i;

                 x1= a;

                 x2 = b;

            }

            a=b;

        }

        int memoza = sum/n;

        Console.WriteLine("memoza:"+memoza);

        Console.WriteLine("in the midell:"+c);

        Console.WriteLine("min: "+x1+" "+x2+" mispar sidori:"+index);   

    }

}