class Main_Problem_13
    {
        static int[][] BCp, BCm;
        static int n, m;
        static double alpha, betta, x;
        static double[] C;
 
        static void Main(string[] args)
        {
            n = 4; m = 9; alpha = 0.2; betta = 0.8; x = -0.32;
            //n = 4; m = 9; alpha = +0.2; betta = +0.8; xz = -0.32;
            double fz = f(x, 2 * n + 2, m - 1, -3 * alpha, betta, out