nservers 3
nflows 3
objective 'd' 1

beginservers
server 1 (6,3);
server 2 (7,0) (10,3);
server 3 (5,2) (6,3);
endservers


beginflows
flow 1 [1,3] (2,1) (1,3);
flow 2 [1,2] (1,2);
flow 3 [2,3] (4,2);
endflows