using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        Stack <int> a = new Stack <int> (6);

        a.Push(2);

        a.Push(3);

        a.Push(4);

        a.Push(5);

        a.Push(6);

        a.Push(7);

        foreach (int i in a)

        {

            Console.Write(i + " ");

        }

        int [] chetni = new int[6];

        int [] nechetni = new int[6];

        string b = "";

        string c = "";

        foreach (int i in a)

        {

            if (i % 2 == 0)

            {

                b+= i.ToString() + " ";

            }

            else if (i != 0)

            {

                c+= i.ToString() + " ";

            }}

            Console.WriteLine();

            Console.WriteLine(b);

            Console.WriteLine(c);

        }

    }

​