Генератор на числа : Number Generator

using System;

namespace Купа
{
    class Program
    {
        static void Main(string[] args)
        {
            int m = int.Parse(Console.ReadLine());
            int n = int.Parse(Console.ReadLine());
            int l = int.Parse(Console.ReadLine());

            int specNumber = int.Parse(Console.ReadLine());
            int contrNum = int.Parse(Console.ReadLine());

            int number = 0;

            for (int i = m ; i >= 1 ;i--)
            {
                for (int j = n; j >= 1; j--)
                {
                    for (int k = l; k >= 1; k--)
                    {
                        //Console.Write($"{one}{two}{three} ");

                        number = (i * 100) + (j * 10) + (k * 1);

                        if (number % 3 == 0)
                        {
                            specNumber += 5;
                        }
                        else if (k == 5)
                        {
                            specNumber -= 2;
                        }
                        else if (number % 2 == 0)
                        {
                            specNumber *= 2;
                        }

                        if (specNumber >= contrNum)
                        {
                            Console.WriteLine
                                   ($"Yes! Control number was reached! Current special number is {specNumber}.");
                            return;
                        }
                    }
                }
            }

            Console.WriteLine($"No! {specNumber} is the last reached special number.");
        }
    }
}