public class Tree {
    public static void main(String[] args) {
	int height = Integer.parseInt(args[0]);
	int bar    = Integer.parseInt(args[1]);
        makeTree(height, bar);
    }

    static void makeTree(int x, int y) {
	for(int i = 0; i < x; i++) { 
	    int width = 2 * i + 1;
	    for (int j = 0; j < x - i -1; j++) { 
		System.out.print(" ");
	    }
	    for (int j = 0; j < width; j++) { 
		System.out.print("#");
	    }
	    System.out.println("");
	}

	for(int i = 0; i < y; i++) {
	    for (int j = 0; j < x - 1; j++) { 
		System.out.print(" ");
	    }
	    System.out.println("#");
	}
    }

}