Как решить задачу из 33 проекта по модулю в C#?

Question

Не могу решить задачу, ответа не нашёл пытался сам, выводит перегрузку стека. Вот мой код:

using System;
using System.Collections.Generic;

namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
int levels = Convert.ToInt32(Console.ReadLine());

Console.WriteLine(Points(levels));
}

static int Points(int levels)
{
if (levels == 1){
return 1;
}
return Points(levels++);
}

}
}

Answer 1

if (levels == 1){ return 1; }
This is your exit statement, if levels is equal to 1 the method is not longer calling it self.

So you need to go from for example 3 to 1.

instead of levels++, your need to decrease levels with 1.
So level-1. Do not use levels--, because this will first pass the value and after that decrease it.

Last you need to add the value of the previous method to accummulate the result.
return levels + Points(levels-1);

https://code.sololearn.com/cA15A14A13a2/?ref=app