using System;

namespace Laba

{

    class Group

    {

        public string name;

        public int[] marks;

    }

    class GroupWithMarks : Group

    {

        public double average;

        public GroupWithMarks(string n, int[] m)

        {

            name = n;

            marks = m;

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

            {

                average += marks[i];

            }

            average /= marks.Length;

        }

    }

    public class Program

    {

        static double AVGCounting(GroupWithMarks[] grt)

        {

            double t = 0;

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

            {

                t += grt[i].average;

            }

            return (t / grt.Length);

        }

        static void SortGroup(GroupWithMarks[] grt)

        {

            for (int i = 0; i < grt.Length - 1; i++)

            {

                double max = grt[i].average;

                int imax = i;

                for (int j = i + 1; j < grt.Length; j++)

                {

                    if (grt[j].average > max)

                    {

                        max = grt[j].average;

                        imax = j;

                    }

                }

                GroupWithMarks temp = grt[i];

                grt[i] = grt[imax];

                grt[imax] = temp;

            }

        }

        static void Change_group_order(ref GroupWithMarks[] max, ref GroupWithMarks[] mid, ref GroupWithMarks[] min)

        {

            double max_avg = AVGCounting(max);

            double mid_avg = AVGCounting(mid);

            double min_avg = AVGCounting(min);

            if (max_avg < mid_avg)

            {

                GroupWithMarks[] temp = max;

                max = mid;

                mid = temp;

                double temp_avg = max_avg;

                max_avg = mid_avg;

                mid_avg = temp_avg;

            }

            if (max_avg < min_avg)

            {

                GroupWithMarks[] temp = max;

                max = min;

                min = temp;

                double temp_avg = max_avg;

                max_avg = min_avg;

                min_avg = temp_avg;

            }

            if (mid_avg < min_avg)

            {

                GroupWithMarks[] temp = mid;

                mid = min;

                min = temp;

                double temp_avg = mid_avg;

                mid_avg = min_avg;

                min_avg = temp_avg;

            }

        }

        public static void Main()

        {

            GroupWithMarks[] gr1 = new GroupWithMarks[2];

            gr1[0] = new GroupWithMarks("Пыня", new int[] { 3, 3, 3, 4, 4 });

            gr1[1] = new GroupWithMarks("Леха", new int[] { 4, 5, 3, 4, 3 });

            GroupWithMarks[] gr2 = new GroupWithMarks[3];

            gr2[0] = new GroupWithMarks("Альфа", new int[] { 4, 5, 3, 4, 2 });

            gr2[1] = new GroupWithMarks("Бетка", new int[] { 4, 4, 4, 4, 5 });

            gr2[2] = new GroupWithMarks("Омежка", new int[] { 3, 3, 3, 4, 4 });

            GroupWithMarks[] gr3 = new GroupWithMarks[2];

            gr3[0] = new GroupWithMarks("Ерохин", new int[] { 2, 3, 4, 4, 3 });

            gr3[1] = new GroupWithMarks("Сычев", new int[] { 3, 4, 4, 3, 5 });

            SortGroup(gr1);

            SortGroup(gr2);

            SortGroup(gr3);

            Change_group_order(ref gr1, ref gr2, ref gr3);

            Console.WriteLine("Группа номер 1:");

            Console.WriteLine("Фамилия: \t    Средний балл: ");

            for (int i = 0; i < gr1.Length; i++)

            {

                Console.WriteLine("{0}\t\t    {1:f2}", gr1[i].name, gr1[i].average);

            }

            Console.WriteLine("Общий средний балл: {0:f2}", AVGCounting(gr1));

            Console.WriteLine();

            Console.WriteLine("Группа номер 2:");

            Console.WriteLine("Фамилия: \t    Средний балл: ");

            for (int i = 0; i < gr2.Length; i++)

            {

                Console.WriteLine("{0}\t\t    {1:f2}", gr2[i].name, gr2[i].average);

            }

            Console.WriteLine("Общий средний балл: {0:f2}", AVGCounting(gr2));

            Console.WriteLine();

            Console.WriteLine("Группа номер 3:");

            Console.WriteLine("Фамилия: \t    Средний балл: ");

            for (int i = 0; i < gr3.Length; i++)

            {

                Console.WriteLine("{0}\t\t    {1:f2}", gr3[i].name, gr3[i].average);

            }

            Console.WriteLine("Общий средний балл: {0:f2}", AVGCounting(gr3));

            Console.WriteLine();

        }

    }

}