# rank: switch-group id, switch id, port number (this line will be skipped)
0: 1 7 -1
1: 1 10 -1
2: 1 8 -1
3: 3 3 -1
4: 0 3 -1
5: 3 8 -1
6: 2 9 -1
7: 2 11 -1
8: 3 6 -1
9: 1 10 -1
10: 3 14 -1
11: 1 7 -1
12: 0 14 -1
13: 0 6 -1
14: 1 9 -1
15: 2 7 -1
16: 0 6 -1
17: 1 7 -1
18: 0 8 -1
19: 3 2 -1
20: 0 7 -1
21: 0 15 -1
22: 0 14 -1
23: 3 14 -1
24: 1 15 -1
25: 2 5 -1
26: 2 10 -1
27: 2 8 -1
28: 3 6 -1
29: 1 7 -1
30: 2 14 -1
31: 3 14 -1
