using System;

public class Program

{

    public static void Main()

    {

        int[] medianArr = new int[] {1,2,3,4,6,7,8};

        if(medianArr.Length % 2 == 0)

        {

            Console.WriteLine((medianArr[medianArr.Length/2 - 1] + medianArr[medianArr.Length/2])/2.0);

        }

        else

        {       

            Console.WriteLine(medianArr[Convert.ToInt16(medianArr.Length/2)]);

        }

    }

}