@nodes
label supply1 supply2 supply3
1 0 20 27
2 0 -4 0
3 0 0 0
4 0 0 0
5 0 9 0
6 0 -6 0
7 0 0 0
8 0 0 0
9 0 3 0
10 0 -2 0
11 0 0 0
12 0 -20 -27
@arcs
cost capacity lower1 lower2
1 2 70 11 0 8
1 3 150 3 0 1
1 4 80 15 0 2
2 8 80 12 0 0
3 5 140 5 0 3
4 6 60 10 0 1
4 7 80 2 0 0
4 8 110 3 0 0
5 7 60 14 0 0
5 11 120 12 0 0
6 3 0 3 0 0
6 9 140 4 0 0
6 10 90 8 0 0
7 1 30 5 0 0
8 12 60 16 0 4
9 12 50 6 0 0
10 12 70 13 0 5
10 2 100 7 0 0
10 7 60 10 0 0
11 10 20 14 0 6
12 11 30 10 0 0
@attributes
source 1
target 12
@end
