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

namespace Task06_Sum
{
    class Sum
    {
        public static int Factorial(int input)
        {
            int factorial = 1;
            for (int i = 1; i <= input; i++)
            {
                factorial *= i;
            }
            return factorial;
        }
        public static void Main()
        {
            Console.Write("Enter N: ");
            uint n = uint.Parse(Console.ReadLine());
            Console.Write("Enter X: ");
            int x = int.Parse(Console.ReadLine());
            double sum = 1;
            for (int i = 1; i <= n; i++)
            {
                sum += Factorial(i) / Math.Pow(x, i);
            }
            Console.WriteLine("The sum is: " + sum);
            Console.WriteLine("Press any key to continue");
            Console.Read();
        }
    }
}