using System;

namespace ConsoleApp6
{
    internal class Program
    {
        static void Main(string[] args)
        {
            int Factorial(int n)
            {
                if (n == 1) return 1;
                if (n == 0) return 1;

                return n * Factorial(n - 1);
            }

            double lim = 0.0001, abs_sum = 0, cur_n = double.PositiveInfinity;
            int i = 0;
            while(cur_n >= lim)
            {
                double cur_sum = 0;
                for (double x = 0.1; x <= 1; x += 0.05)
                {
                    double up = 1, dn = 1;

                    for (int n = 0; n < i; n++)
                    {
                        up *= 2 * x;
                    }

                    dn = Factorial(i);

                    cur_sum += up / dn;

                    Console.WriteLine($"y == {Math.Pow(Math.E, 2*x)}");
                }
                if (cur_sum >= lim)
                {
                    abs_sum += cur_sum;
                    i++;
                }

                cur_n = cur_sum;
            }
            Console.WriteLine($"\ns = {abs_sum} {i}");
        }
    }
}