using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        List<Person> persones = new List<Person>{

            new Person("Jora", true,2000),

            new Person("Dima", false,3000),

            new Person("Vadim",false,2500),

            new Person("Andrey",true,800),

            new Person("Sergey", true,3200)

        };

        //var trupeople = from person in persones

                        //where person.isGoing == true

                        //select person;

        var trupeople = persones.Where(i => i.isGoing ==true);

        var poormen = from i in persones

                        orderby i.Money

                        select i;

        var richmen = persones.OrderByDescending(i => i.Money);

        var sortbyName = persones.OrderBy(u => u.Name);

        Console.WriteLine("----ot bogatogo k bednomy----");

        foreach(var pituh in richmen){

            Console.WriteLine(pituh.Name);

        }

        Console.WriteLine("----ot bednogo k bogatomy----");

        #region Print

    foreach(var item in poormen){

        Console.WriteLine(item.Name);

    #endregion

    }

        Console.WriteLine("----po imeni----");

foreach(var name in sortbyName){

    Console.WriteLine(name.Name);

}

    }

​

class Person{

    internal string Name;

    internal bool isGoing;

    internal int Money;

    public Person(string _name, bool _isGoing, int _money){

        Name = _name;

        isGoing = _isGoing;

        Money = _money;

    }

    class Student: Person{

        internal int Course;

        internal bool Salary;

        public Student(int a, bool b) : base(_name,_isGoing,_money)

            {

            this.Course = a;

            this.Salary = b;

        }

    }

}

}