# This is the initial graph from http://www.ams.org/samplings/feature-column/fcarc-pagerank

0 -> 1
0 -> 2
1 -> 3

2 -> 4
2 -> 1

3 -> 4
3 -> 5
3 -> 1

4 -> 6
4 -> 7
4 -> 5

5 -> 7

6 -> 0
6 -> 4
6 -> 7

7 -> 5
7 -> 6