Gopneg Solution

using System;
using System.Collections.Generic;

public class Program
{
    public static void Main()
    {
        Person your = new Person();
        Person yourFriend = new Person();
        PersonGroup pidors = your + yourFriend;
        Console.WriteLine("Решение от Жака Фреско");
    }
}

class Person
{
    public static PersonGroup operator +(Person firstPerson, Person secondPerson)
    {
        var personGroup = new PersonGroup();
        personGroup.Persons.Add(firstPerson);
        personGroup.Persons.Add(secondPerson);
        return personGroup;
    }
}
class PersonGroup
{
    public List<Person> Persons {get;set;}
}