Number Generator

using System;

public class Program
{
    public static void Main()
    {
        int n = int.Parse(Console.ReadLine());
        int m = int.Parse(Console.ReadLine());
        int l = int.Parse(Console.ReadLine());
        int special = int.Parse(Console.ReadLine());
        int control = int.Parse(Console.ReadLine());
        int sumator = 0;

        for(int i = n; i >= 1; i --)
        {
            for(int j = m; j >= 1; j --)
            {
                for(int k = l; k >= 1; k --)
                {
                    sumator = 100 * i + 10 * j + k;

                    if(sumator % 3 == 0)
                    {
                        special += 5;
                    }
                    else if(sumator % 10 == 5)
                    {
                        special -= 2;
                    }
                    else if(sumator % 2 == 0)
                    {
                        special *= 2;
                    }
                    if(special >= control)
                    {
                    Console.WriteLine("Yes! Control number was reached! Current special number is {0}.", special);
                    return;
                    }
                }
            }
        }

        Console.WriteLine("No! {0} is the last reached special number.", special);
    }
}