3	- number of nodes (numbered 0 to n-1)
6	- number of edges, without self-edges
0 1 0.3	- (from to prob) probability to change from state 0 to state 1 is 0.3
1 0 0.1
1 2 0.6
2 1 0.4
2 0 0.3
0 2 0.5