class Program
    {
        static bool correct;
        static int numb;

        static void Main(string[] args)
        {
            int n = Int32.Parse(Console.ReadLine());

            for (int i = 0; i < n; i++)
            {
                int input = Convert.ToInt32(Console.ReadLine());

                if (i == 0)
                    numb = input;

                if ((numb >= 0 && input >= 0) || (numb < 0 && input < 0))
                    correct = true;
                else
                    correct = false;

                input = 0;

            }
            Console.Write(correct ? "Correct" : "Incorrect");
            Console.ReadLine();
        }
    }