Suggested Answer

The code that has changed from crews.cpp follows. You can view the complete program online in the file YourSolverHome/examples/src/crews_ex4.cpp.

You change the number of crews:

    const IloInt nCrews = 15;

You specify the crew size of the additional flights:

    IloNumArray crewSize(env, nCrews, 4, 5, 5, 6, 7, 4, 5, 6,
                                      6, 7, 4, 4, 7, 4, 5);

You specify specific crew requirements for the additional flights:

      crewRequirements[12][SeniorSet] = 2;
      crewRequirements[12][JuniorSet] = 3;
      crewRequirements[12][FrenchSet] = 2;
      crewRequirements[12][GermanSet] = 2;
      crewRequirements[12][SpanishSet] = 2;
      crewRequirements[14][SeniorSet] = 2;
      crewRequirements[14][FrenchSet] = 2;
      crewRequirements[14][SpanishSet] = 2;

You should get the following results, though the information displayed by IloSolver::printInformation will vary depending on platform, machine, configuration, and so on.

Solution
Crew #1: Bill Bob Carol Cathy
Crew #2: Carolyn David Ed Fred Juliet
Crew #3: Heather Inez Janet Jeremy Joe
Crew #4: Bill Bob Carol Cathy Jean Marilyn
Crew #5: Carolyn David Ed Fred Juliet Mario Ron
Crew #6: Heather Inez Janet Jeremy
Crew #7: Bill Bob Carol Cathy Jean
Crew #8: Carolyn David Ed Fred Joe Juliet
Crew #9: Heather Inez Janet Jeremy Marilyn Mario
Crew #10: Bill Bob Carol Cathy Jean Ron Tom
Crew #11: Carolyn David Fred Juliet
Crew #12: Ed Heather Inez Jeremy
Crew #13: Bill Bob Carol Cathy Jean Joe Mario
Crew #14: Carolyn David Fred Juliet
Crew #15: Ed Inez Jeremy Marilyn Ron
Number of fails               : 21
Number of choice points       : 89
Number of variables           : 190
Number of constraints         : 347
Reversible stack (bytes)      : 28164
Solver heap (bytes)           : 164844
Solver global heap (bytes)    : 4044
And stack (bytes)             : 4044
Or stack (bytes)              : 4044
Search Stack (bytes)          : 4044
Constraint queue (bytes)      : 11152
Total memory used (bytes)     : 220336
Elapsed time since creation   : 0.08