import random
import time
import os

empty = ' '
snow_flake = '*'


def get_input():
    width = height = 0
    while width % 2 == 0 and height % 2 == 0:
        width = int(input('Podaj nieparzystą szerokość planszy: '))
        height = int(input('Podaj nieparzystą wysokość planszy: '))

    return width, height


def create_matrix(width, height):
    matrix = []
    for i in range(height):
        matrix.append([empty] * width)
    return matrix


def clear_matrix(matrix, width, height):
    matrix = create_matrix(width, height)
    return matrix


def draw_square(matrix, width, height, s):
    matrix = clear_matrix(matrix, width, height)
    x1, y1 = width // 2, height // 2
    x2, y2 = width // 2, height // 2
    x1 -= (s - 1)
    y1 -= (s - 1)
    x2 += (s - 1)
    y2 += (s - 1)
    for x in range(x1, x2 + 1):
        for y in range(y1, y2 + 1):
            if x in (x1, x2) or y in (y1, y2):
                matrix[y][x] = snow_flake
    return matrix


def generate_new_frame(matrix, width, height, s):
    matrix = draw_square(matrix, width, height, s)
    return matrix


def print_matrix(matrix):
    for row in matrix:
        print(*row)


def clear_screen():
    os.system('clear')


def run():
    width, height = get_input()
    frame = create_matrix(width, height)
    n = min(width, height) // 2 + 1

    while True:
        for i in range(-n + 1, n-1):
            print(n - abs(i))
            clear_screen()
            frame = generate_new_frame(frame, width, height, n - abs(i))
            print_matrix(frame)
            time.sleep(1/24)


def main():
    run()


if __name__ == '__main__':
    main()