using System;

​

namespace Activity1

{

    public class Program

    {

        public static void Main(string[] args)

        {

            int num, i, j, k;

            Console.Write("enter the level:");

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

            for (i = 1; i <= num; i++)

            {

                for (j = 1; j < num-i+1; j++)

                {

                    Console.Write(" ");

                }

                for (k = 1; k <= i; k++)

                {

                    Console.Write(i);

                    Console.Write(" ");

                }

                Console.WriteLine();

​

            }

        }

    }

}