Each instance has a filename "deep_n_i.dat", in which deep indicates that the trips are international (deep sea shipping), n is the number of ports (including the depot), and i is the index of the instance in the same group.

Line 1 - [# of customer, vehicle/vessel capacity, speed lower limit, speed upper limit]
Line 2 - demand at each port
Line 3 - lower time window bound for each port
Line 4 - upper time window bound for each port
Line 5 - service time at each port
From line 6 - distance matrix
