from cs1lib import *

def pressed(mx, my):
    global mouse_down
    mouse_down = True

    # your code here
    xc.append(mx)
    yc.append(my)
    print(mx)

def released(mx, my):
    global mouse_down
    mouse_down = False

def moved(mx, my):
    if mouse_down:
        # your code here
        xc.append(mx)
        yc.append(my)

def circle_art():
    clear()

    # your code here; draw all the circles
    i = 0
    while i < len(xc):
        draw_circle(xc[i], yc[i], RADIUS)
        i += 1


xc = []     # empty lists to store
yc = []     #  circle centers
mouse_down = False
RADIUS = 5 # radius of circles

start_graphics(circle_art, 800, mouse_press=pressed, mouse_release=released, mouse_move=moved)