using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("enter the no of rows");

        int num = Convert.ToInt32(Console.ReadLine());

        for(int j=1;j<= num;j++)

        {

            for (int k = j; k <= num;k++)

            {

                Console.Write(k.ToString());               

            }

            Console.WriteLine('\n');            

        }

    }

}