using System;

public class Program

{

    public static void Main()

    {

        int num;

        Console.WriteLine("please enter number");

        num = int.Parse(Console.ReadLine());

        int x=1;

     while (x<=num)

         {

     Console.WriteLine(x);

     x = x+1;

     }

      Console.WriteLine("end the loop");

        }

}