public static Collection<BenchmarkInstance> getAllCordeauPR(String inputFolder){
Collection<BenchmarkInstance> instances = new ArrayList<BenchmarkInstance>();
for(int i=0;i<10;i++){
VehicleRoutingProblem.Builder builder = VehicleRoutingProblem.Builder.newInstance();
String file = inputFolder + "/pr"+ getInstanceNu(i+1);
new CordeauReader(builder).read(file);
VehicleRoutingProblem p = builder.build();
instances.add(new BenchmarkInstance("pr" + getInstanceNu(i+1), p, getBestKnown(file),null));
}
return instances;
}