Input file format:

Each edge on its line.
Space separated node ids.
Both directions should be present.

Example:
0 1
1 0
2 0
0 2
2 3
3 2

or weighted:
0 1 0.1
1 0 0.4
2 0 0.3
0 2 0.9
2 3 0.1
3 2 0.5

Edge weights are not used directly, instead personalized page rank is used.

