using System;

public class Program

{

    public static void Main()

    {

        /*

        int x;

        x = 1;

        Console.WriteLine(x);

        x = x + 1;

        Console.WriteLine(x);

        */

        for (int x = 1000; x <= 100 ; x=x-1)

        {

            Console.WriteLine(x);

        }

        /*

        int y = 1000;

        do

        {

            y = y + 1;

            Console.WriteLine(y);

        } while (y < 100);

        */

        /*

        int z = 1000;

        while (z < 100)

        {

            z = z + 1;

            Console.WriteLine(z);

        }

        */

    }

}