using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

​

namespace fuckyou

{

    class Program

    {

​

​

    static void Main()

    {

        int size = Convert.ToInt32(Console.ReadLine());

​

        int[] Arr = new int[size];

​

​

        for (int i = 0; i < Arr.Length; i++)

        {

            Arr[i] = Convert.ToInt32(Console.ReadLine());

        }

        //mean

        int sum = Arr.Sum();

        double meanResult = (double)(sum) / Arr.Length;

        Console.WriteLine(meanResult);

​

        //median     

        int[] sortedArr = new int[size];

        sortedArr = Array.Sort(Arr);

​

​

        var middleValue = 0;

        var middleValue1 = 0;

        var medianResult = 0;

        if (Arr.Length % 2 == 0)

        {

            middleValue = sortedArr[Arr.Length / 2 - 1];

            middleValue1 = sortedArr[Arr.Length / 2];

            medianResult = (middleValue + middleValue1) / 2;

            Console.WriteLine(medianResult);

        }

​

        else

        {

            middleValue = Arr.Length / 2 - .5;

            Console.WriteLine(middleValue);

        }

        //mode

        Console.ReadLine();

    }

​

}

}