using System;
using System.Collections;
using System.Linq;

namespace Event
{

    public class Student
    {
        public string Album { get; set; }
        public string Name { get; set; }
        public double[] Scores { get; set; }
        public override string ToString()
        {
            return "Student: " + Name + " album: " + Album + " oceny: " + string.Join(",", Scores);
        }
    }

    class MainClass
    {
        public static void Main(string[] args)
        {
            ArrayList arrList = new ArrayList();
            arrList.Add(
            new Student
            {
                Album = "1",
                Name = "Malinowski",
                Scores = new double[] { 1.0, 2.5, 2.0, 1.5 }
            });

            arrList.Add(
            new Student
            {
                Album = "2",
                Name = "Nowak",
                Scores = new double[] { 3.0, 3.5 }
            });

            arrList.Add(
            new Student
            {
                Album = "3",
                Name = "Adamiak",
                Scores = new double[] { 4.0, 5.5 , 6.0}
            });

            var query = from Student student in arrList
                    where student.Scores.ToList().Average() > 3.0
                        select student;


            foreach (Student s in query)
                Console.WriteLine(s.ToString());

        }
    }
}