using System;

using System.Linq;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        var num = Console.ReadLine().Split(',').Select(int.Parse).ToList();

​

            for (int i = 0; i < num.Count; i++)

            {

                if (num[i] % 2 != 0)

                {

                    num.Remove(num[i]);

                }

            }

            Console.WriteLine(String.Join(",", num));

    }

}

​