import turtle as t
t.speed(0)
t.pensize(2)
t.left(90)
t.backward(100)
t.color("green")

def draw(l):
	if(l<10):
		return
	else:
		t.forward(l)
		t.color("red")
		t.circle(2)
		t.color("green")
		t.left(45)
		draw(3*l/4)
		t.right(90)
		draw(3*l/4)
		t.left(45)
		t.backward(l)

draw(25)
t.exitonclick()