/*print like this

123

​

12

​

1

​

1

​

12

​

123

​

*/

​

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=num;j>= 1;j--)

        {

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

            {

                Console.Write(k.ToString());

               //Console.WriteLine();

            }

            Console.WriteLine('\n');

        }

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

        {

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

            {

                Console.Write(k.ToString());

               //Console.WriteLine();

            }

            Console.WriteLine('\n');

        }

    }

}