FibonacciNumbers

static void Main()
        {
            int n = int.Parse(Console.ReadLine());
            int firstNum = -1;
            int secondNum = 1;
            int fibNumber;
            for (int count = 0; count < n; count++)
            {
                fibNumber = firstNum + secondNum;
                Console.Write("{0} ", fibNumber);
                firstNum = secondNum;
                secondNum = fibNumber;

            }
        }