using System;                   

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Bai 38:Tính S(n) = CanBac N + 1(N + CanBac N(N – 1 +…+CanBac3(2 + CanBac2(1)))) có n dấu căn");

        Console.WriteLine("Nhap vao so n:");

        double n = int.Parse(Console.ReadLine());

        double s=1;

        for(float i=2;i<=n;i++)

        {   s=i+Math.Pow(s,(float)(1/i));

        }

        s=Math.Pow(s,(float)(1/(n+1)));

        Console.WriteLine("Ket qua la:{0}",s);

    }

}