using System;

public class Program

{

    public static void Main()

    {

        for(int a=1; a<=9; a++)

        {

        for(int b=1; b<=9-a; b++)

        {

        Console.Write(" ");

        }

        for (int c =1; c <=a; c++)

    {

    Console.Write(a);

    }

    Console.WriteLine();

    }

}

}

​