mport turtle

screen = turtle.Screen()
screen.setup(1000,1000)
screen.setworldcoordinates(-1000,-1000,1000,1000)
screen.tracer(0,0)
turtle.speed(0)
turtle.hideturtle()
turtle.color('red')

def cross():
    turtle.right(45)
    turtle.forward(70)
    turtle.backward(140)
    turtle.forward(70)
    turtle.left(90)
    turtle.forward(70)
    turtle.backward(140)
    turtle.forward(70)


def draw_cross(x,y,length):
    turtle.up()
    turtle.goto(x-length/2,y-length/6)
    turtle.down()
    for _ in range(4):
        turtle.forward(length)
        turtle.right(90)


def vicsek(x,y,length,n):
    if n==0:
        draw_cross(x,y,length)
        return

    vicsek(x,y,length/3,n-1)
    vicsek(x+length/3,y,length/3,n-1)
    vicsek(x-length/3,y,length/3,n-1)
    vicsek(x,y+length/3,length/3,n-1)
    vicsek(x,y-length/3,length/3,n-1)


cross()
for x in range(100, 600, 200):
    vicsek(x,0,100,5)
    turtle.color('white')
    cross()
    turtle.goto(x+100, 0)
    turtle.color('red')
    cross()

screen.update()

turtle.hideturtle()
turtle.exitonclick()