using System;

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    u                       sing Systm.Collections.Generic;

public class Program

{

    public static void Main()

    {

        while (true)

        {

        }

    }

}