2014/round3/restaurant_chains_sample_input.txt

5
4 4
3 0
1 2
0 1
2 3

4 5
1 3
3 0
1 2
2 3
0 1

2 1
0 1

6 9
1 5
2 4
2 3
0 3
0 4
2 5
1 3
0 5
1 4

10 9
0 1
0 9
0 3
0 8
0 7
0 6
0 2
0 4
0 5