from turtle import *
tracer(0)
lt(90)
r = 20 
for i in range(2):
    fd(10*r)
    rt(90)
    fd(20*r)
    rt(90)
up()
fd(3*r)
rt(90)
fd(5*r)
lt(90)
down()
for i in range(2):
    fd(70*r)
    rt(90)
    fd(80*r)
    rt(90) 
up()
for x in range(-50,50):
    for y in range(-50,50):
        goto(x*r,y*r)
        dot(3,'red') 
update()