9
0, 180, 140, 220, 0
0, 400, 300, 140, 1
300, 360, 140, 200, 2
300, 300, 200, 80, 1
500, 300, 80, 160, 0
500, 460, 140, 80, 1
640, 220, 100, 300, 2
140, 0, 600, 220, 3
0, 0, 140, 180, 0