16
100, 540, 2
130, 570, 3
210, 570, 4
220, 560, 5
220, 510, 6
210, 500, 7
210, 340, 6
230, 320, 5
330, 320, 4
400, 390, 3
450, 390, 4
460, 380, 5
460, 110, 6
450, 100, 7
140, 100, 0
160, 120, 1