04. Car Number

using System;

namespace CarNumber
{
    class Program
    {
        static void Main(string[] args)
        {
            int startNum = int.Parse(Console.ReadLine());
            int finalNum = int.Parse(Console.ReadLine());

            for (int i = startNum; i <= finalNum; i++)
            {
                for (int k = startNum; k <= finalNum; k++)
                {
                    for (int j = startNum; j <= finalNum; j++)
                    {
                        for (int x = startNum; x <= finalNum; x++)
                        {
                            if ((i % 2 == 0 && x % 2 == 1 || i % 2 == 1 && x % 2 == 0)
                                && i > x && (k + j) % 2 == 0)
                            {
                                Console.Write($"{ i}{ k}{ j}{ x} ");
                            }
                        }
                    }
                }
            }
        }
    }
}