using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        string name = "Artur Petrosyan ar7ur@bk.ru || film";

        string email = "";

        string subject = "";

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

        {

            if(name[i] == ' ' && name[i+1] == '|')

            {

                break;

            }

            email+=name[i];

        }

        Console.WriteLine(email);

        for(int i = name.Length-1; i > 0; i--)

        {

            if(name[i] == ' ' && name[i-1] == '|')

            {

                break;

            }

            subject += name[i];

        }

        Console.WriteLine(subject);

        string sub = "";

        for(int i = subject.Length; i >= 0; i--)

        {

            sub+=subject[i];

        }

        Console.WriteLine(sub);

    }

​

}