20
7 5 4.3
4 9 3.7
15 10 1.25
3 9 6.2
7 4 5.5
6 9 4.85
2 8 8.34
8 7 3.7
12 9 2.5
6 8 4.8
8 11 6.12
14 2 3.98
3 7 7.5
4 5 8.5
7 8 4.2
9 5 6.1
12 6 3.36
4 8 7.12
13 6 5.4
5 8 5.17