sourcenode 0 0 num node 21 1 1250000 0 2 1250000 0 3 2500000 0 4 2500000 0 5 2500000 1250000 6 2500000 1250000 7 2500000 2500000 8 2500000 2500000 9 2500000 2500000 10 2500000 2500000 11 2500000 2500000 12 2500000 2500000 13 1250000 2480000 14 1250000 2480000 15 1250000 2480000 16 1250000 2480000 17 1250000 2480000 18 1250000 2480000 19 3750000 2480000 20 3750000 2480000 21 1250000 3000000 num sinknode 4 25 1 26 3 27 2 28 4 num wire 20 0 1 0 2 3 0 4 5 0 6 7 0 7 8 0 7 9 0 10 12 0 11 12 0 12 13 0 13 14 0 13 15 0 17 18 0 16 18 0 18 25 0 18 21 0 18 21 0 21 26 0 12 19 0 20 27 0 20 28 1 num buffer 9 1 2 0 3 4 0 5 6 0 8 10 0 9 11 0 14 16 0 15 17 0 19 20 0 19 20 0