using System;

public class Program

{

    public static void Main()

    {

int [] vec=new int [1000];

int p=-1 ,r=0;

for(int i=1000;i>=1;i--)

{

p++;

vec[p]=i;

Console.Write(vec[p]+"  ");

if (r%10==0)

Console.WriteLine("  ");

 }

    }

}