import java.util.Scanner;

public class Uppgift3 {
public static void main(String[] args) {

    Scanner scan = new Scanner(System.in);

    int direction=0, length;
    char ch;

    while (true)
    {
        System.out.print("\nAnge längden på de 2 lika länga sidorna 1-26 (avsluta med -1):");
        length = scan.nextInt();

        if(length == -1)
        {
            break;
        }
        if(length>26)
        {
        	break;
        }
        System.out.print("Ska den räta vinkeln vara nedåt (0) eller uppåt (1):");
        direction = scan.nextInt();

        if(direction == 0)
        {
            for(int i=1;i<=length;i++)
            {
                System.out.print("\n");
                ch = 'A';

                for(int j=1; j<=length; j++)
                	 if (j<=i)
                {
                    System.out.print( ch);
                    ch++;
                }

            }

        }
        else if(direction == 1)
        {
            for(int i=1;i<=length;i++)
            {
                System.out.print("\n");
                ch = 'A';

                for(int j=length;j>=1;j--)
                	 if (j>=i)
                {
                    System.out.print(ch);
                    ch++;
                }
            }
        }
    }

}
}