using System;
public class Program
{
public static void Main()
Console.Write("Enter number: ");
int n = int.Parse(Console.ReadLine());
for (int j = 1; j <= n * 2; j += 2)
for (int i = n * 2; i - j > 0; i -= 2)
Console.Write(" ");
}
for (int i = 1; i <= j; i++)
Console.Write("*");
Console.WriteLine();
