#Omega network with 16 terminal nodes and 32 switches
48 3

 0 B 16
 1 R 17
 2 R 18
 3 R 19
 4 R 20
 5 R 21
 6 R 22
 7 R 23
 8 R 16
 9 R 17
10 R 18
11 R 19
12 R 20
13 R 21
14 R 22
15 R 23
16 N 24 25
17 N 26 27
18 N 28 29
19 N 30 31
20 N 24 25
21 N 26 27
22 N 28 29
23 N 30 31
24 N 32 33
25 N 34 35
26 N 36 37
27 N 38 39
28 N 32 33
29 N 34 35
30 N 36 37
31 N 38 39
32 N 40 41
33 N 42 43
34 N 44 45
35 N 46 47
36 N 40 41
37 N 42 43
38 N 44 45
39 N 46 47
40 N  0  1
41 N  2  3
42 N  4  5
43 N  6  7 
44 N  8  9
45 N 10 11
46 N 12 13
47 N 14 15