using System;
public class Program
{
public static void Main()
pyramid(10);
}
static void pyramid(int n)
for(int i = 1; 1<=n; i++)
for(int j = i; j<=n; j++)
Console.Write(" ");
for(int k = 1; k <= 2 * i - 1; k++)
Console.Write("A" + "");
Console.WriteLine();