import turtle as t
t.speed(-100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000)
t.pensize(1)
s = ['black','yellow']
for x in range(300):
t.forward(x)
t.color(s[x % 2])
t.left(60)
