using System;

using System.Collections.Generic;

public class Program

{

    static void q1()

        {

            int count = 0;

            Queue<int> tempQue = new Queue<int>();

            int num = 1;

            while (num != 999)

            {

                num = int.Parse(Console.ReadLine());

                if (num % 2 == 0){

                    tempQue.Enqueue(num);

                    //Console.WriteLine("new element=" + num);

                }

            }

            int ArrLength = tempQue.Count;

            int[] arr = new int[ArrLength];

             foreach( int number in tempQue )

             {

                 arr[count] = number;

                 count++;

             }

            for(int i=0; i<ArrLength; i++)

            {

​

                Console.WriteLine(arr[i]);

            }

            }

​

    public static void Main()

    {

        q1();

    }

}