using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        //Console.WriteLine("Hello World");

        //List<int> tt = new List<int>();

        //tt.Add(1);

        //tt.Add(2);

        //tt.Add(3);

        //tt.Add(4);

        //List<int> btt = tt.Where(x=> x % 2 == 0).ToList();

        //tt.RemoveAll(x=> x % 2 == 0);

        //Console.WriteLine("Hello World");

        //foreach(var item in tt){

        //  Console.WriteLine(item);

        //}

        //Console.WriteLine("Hello World");

        //btt = btt.Where(x => x==4).ToList();

        //Parallel.ForEach(allBeats.Where(x => x.bin == selectedBinNumber){

        //btt.Where(x => x==4 ).Select(x => { ++x; return x; }).ToList();

        //foreach(var item in btt){

        //  Console.WriteLine(item);

        //}

        var tList = new List<Test>();

        for(var i=0; i< 5;i++){

            var a = new Test();

            a.a = i; a.b = i+1;

            tList.Add(a);

        }

        var bList = tList.ToList();

        tList.RemoveAll(x => x.b % 2 == 0);

        Console.WriteLine("tList");

        foreach(var item in tList){

            Console.WriteLine("A:"+item.a + " B:"+ item.b);

        }

        Console.WriteLine("bList");

        foreach(var item in bList){

            Console.WriteLine("A:"+item.a + " B:"+ item.b);

        }

    }

    public class Test{

        public int a,b;

    }

}