Практикум 5, задание 2, номер 11

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace mainSolution
{
    public class MyException : Exception
    {
        public MyException(string messege) : base(message: messege + "\n\n\n Exception founded by Decibit\n\n\n") { }
        public MyException() : base()
        {

        }
        public void Messsage()
        {
            Console.WriteLine("\n\n\n\n\n\n Invalid number, please enter a number from 1 to 12 \n\n\n\n\n\n");
        }


    }
    class Input
    {
        private static IEnumerator<string> getin()
        {
            while (true)
                foreach (string s in Console.ReadLine().Split().Where(x => x.Length > 0))
                    yield return s;
        }

        private IEnumerator<string> inp = getin();

        public string GetString() { inp.MoveNext(); return inp.Current; }
        public int GetInt() { return int.Parse(GetString()); }
        public long GetLong() { return long.Parse(GetString()); }
        public double GetDouble() { return double.Parse(GetString()); }
    }

    static class Program
    {
        static public Input cin = new Input();

        static double getSqrt(double a, double n, double e = 1e-10)
        {
            double x0 = a / n;
            double x = ((n - 1) * x0 + a / Math.Pow(x0, n - 1)) / n;
            while (Math.Abs(x0 - x) >= e)
            {
                x0 = x;
                x = ((n - 1) * x0 + a / Math.Pow(x0, n - 1)) / n;
            }
            return x;
        }
        static void Main(string[] args)
        {
            double a = cin.GetDouble();
            int A = Convert.ToInt32(Math.Ceiling(a));
            double save_a = a;
            double b = cin.GetDouble();
            int B = Convert.ToInt32(b);
            double h = cin.GetDouble();
            double ans = 0;
            for (int i = 1; a <= b; ++i)
            {
                Console.WriteLine($"sqrt[i] = {getSqrt(a, i)}");
                ans += getSqrt(a, i);
                a += h;
            }
            Console.WriteLine($"sum = {ans}");
            for (int x = A; x <= B - 2; x++)
                for (int y = x + 1; y <= B - 1; y++)
                    for (int z = y + 1; z <= B; z++)
                    {
                        if (x + y == z)
                        {
                            Console.WriteLine($"x = {x}, y = {y}, z = {z}");
                        }
                    }

            if (save_a < 2)
                Console.WriteLine("No solution");
            else
                Console.WriteLine("n = 1");
        }


    }
}