from turtle import *
from random import *
speed(0)
pensize(10)
for i in range(360):
if i>=0 and i<=90 or i>=180 and i<=270:
color('blue')
else:
color('white')
left(1)
fd(100)
backward(100)
input()

from turtle import *
from random import *
speed(0)
pensize(10)
for i in range(360):
if i>=0 and i<=90 or i>=180 and i<=270:
color('blue')
else:
color('white')
left(1)
fd(100)
backward(100)
input()