using System;

​

using System.Linq;

public class Program

{

    public static void Main()

    {

        start:

        Console.WriteLine("Please enter 4 numbers");

        float[] grades = new float [4];

        grades[0] = float.Parse(Console.ReadLine());

        grades[1] = float.Parse(Console.ReadLine());

        grades[2] = float.Parse(Console.ReadLine());

        grades[3] = float.Parse(Console.ReadLine());

        Console.WriteLine();

        Console.WriteLine();

        Array.Sort(grades);

        foreach (int grade in grades)

        {

            Console.Write(grade+ ", ");

        }

        Console.WriteLine();

        Console.WriteLine();

        Console.WriteLine("The average of these grades is: " +grades.Average());

        Console.WriteLine();

        Console.WriteLine();

        Console.WriteLine("The median of these grades is: " +Median(grades));

        Console.WriteLine();

        if (grades.Average() > 65)

        {

            Console.WriteLine("Congrats! You passed! :)");

        }

        else if (grades.Average() < 65)

        {

            Console.WriteLine("You failed. :(");

        }

        else if (grades.Average() < 0)

        {

            Console.WriteLine("How did you mange this?");

        }

        else if (grades.Average() > 100)

        {

            Console.WriteLine("Did you cheat?");

        }

        Console.WriteLine();

        Console.WriteLine("do you want to run this program again?");

        string answer = Console.ReadLine();

        if (answer == "y" || answer == "Y")

        {

            Console.Clear();

            goto start;

        }

        else

        {

        }

    }

    private static float Median(float[] grades)

    {

        float sum = grades[1] + grades[2];

        float median = sum/2;

        return median;

    }

}