Instance name:   BHW1
Authors:         HKSG
Date:            July 16, 2012
Reference: 	 Spider-Solver
Solution
Route 1 : 1 N10 N6 N2 N1 N6 1
Route 2 : 1 N4 N4 N11 N10 1
Route 3 : 1 N2 6-E4- N5 N8 N6 9-E10-10 1
Route 4 : 1 7-A8- N5 2-E1-N3 N10 1
Total cost:        780