Zadanie 11

for i in range(0, 20):
    if i % 2 == 0:
        arrow.pen.size = 10*(20-i)
        arrow.pen.color = Color(255, 0, 0)
        arrow.move(0.00001)
    else:
        arrow.pen.size = 10*(20-i)
        arrow.pen.color = Color(0, 255, 0)
        arrow.move(0.00001)