21
10 0
10 400
9.5 420
9 440
8.5 455
8 460
7.5 500
7 530
6.5 540
6 550
5.5 560
5 570
4.5 590
4 610
3.5 620
3 640
2.5 645
2 650
1 650
0 650
0 0