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00041 #include <gecode/driver.hh>
00042 #include <gecode/int.hh>
00043 #include <gecode/set.hh>
00044
00045 using namespace Gecode;
00046
00047 namespace {
00049 typedef enum {
00050 Tom, David, Jeremy, Ron,
00051 Joe, Bill, Fred,
00052 Bob, Mario, Ed,
00053 Carol, Janet, Tracy,
00054 Marilyn, Carolyn, Cathy,
00055 Inez, Jean, Heather, Juliet
00056 } Employee;
00057 const int noOfEmployees = Juliet+1;
00058
00060 struct Flight {
00061 int staff;
00062 int stewards;
00063 int hostesses;
00064 int french;
00065 int spanish;
00066 int german;
00067 };
00068
00069 const char* employeeToName(Employee e);
00070 extern const int stewards[];
00071 extern const int noOfStewards;
00072 extern const int hostesses[];
00073 extern const int noOfHostesses;
00074 extern const int spanishSpeaking[];
00075 extern const int noOfSpanishSpeaking;
00076 extern const int frenchSpeaking[];
00077 extern const int noOfFrenchSpeaking;
00078 extern const int germanSpeaking[];
00079 extern const int noOfGermanSpeaking;
00080 extern const Flight requiredCrew[];
00081 extern const int noOfFlights;
00082 }
00083
00094 class Crew : public Script {
00095 public:
00097 SetVarArray flight;
00098
00100 Crew(const Options&) :
00101 flight(*this,noOfFlights,IntSet::empty,0,noOfEmployees-1)
00102 {
00103 IntSet stewardsDS(stewards,noOfStewards);
00104 IntSet hostessesDS(hostesses,noOfHostesses);
00105 IntSet spanishDS(spanishSpeaking, noOfSpanishSpeaking);
00106 IntSet frenchDS(frenchSpeaking, noOfFrenchSpeaking);
00107 IntSet germanDS(germanSpeaking, noOfGermanSpeaking);
00108
00109 for (int i=0; i<noOfFlights; i++) {
00110 IntVarArray required(*this,5,0,noOfEmployees-1);
00111 SetVar team = flight[i];
00112
00113 int N = requiredCrew[i].staff;
00114 int NStew = requiredCrew[i].stewards;
00115 int NHost = requiredCrew[i].hostesses;
00116 int NFrench = requiredCrew[i].french;
00117 int NSpanish = requiredCrew[i].spanish;
00118 int NGerman = requiredCrew[i].german;
00119
00120
00121 cardinality(*this, team,N,N);
00122
00123
00124
00125 SetVar stewardsInTeam(*this);
00126 rel(*this, team, SOT_INTER, stewardsDS, SRT_EQ, stewardsInTeam);
00127 cardinality(*this, stewardsInTeam, required[0]);
00128 rel(*this, required[0], IRT_GQ, NStew);
00129
00130 SetVar hostessesInTeam(*this);
00131 rel(*this, team, SOT_INTER, hostessesDS, SRT_EQ, hostessesInTeam);
00132 cardinality(*this, hostessesInTeam, required[1]);
00133 rel(*this, required[1], IRT_GQ, NHost);
00134
00135 SetVar spanishInTeam(*this);
00136 rel(*this, team, SOT_INTER, spanishDS, SRT_EQ, spanishInTeam);
00137 cardinality(*this, spanishInTeam, required[2]);
00138 rel(*this, required[2], IRT_GQ, NSpanish);
00139
00140 SetVar frenchInTeam(*this);
00141 rel(*this, team, SOT_INTER, frenchDS, SRT_EQ, frenchInTeam);
00142 cardinality(*this, frenchInTeam, required[3]);
00143 rel(*this, required[3], IRT_GQ, NFrench);
00144
00145 SetVar germanInTeam(*this);
00146 rel(*this, team, SOT_INTER, germanDS, SRT_EQ, germanInTeam);
00147 cardinality(*this, germanInTeam, required[4]);
00148 rel(*this, required[4], IRT_GQ, NGerman);
00149
00150 }
00151
00152
00153 for (int i=0; i<noOfFlights-2; i++) {
00154 rel(*this, flight[i], SRT_DISJ, flight[i+1]);
00155 rel(*this, flight[i], SRT_DISJ, flight[i+2]);
00156 }
00157 rel(*this, flight[noOfFlights-2], SRT_DISJ, flight[noOfFlights-1]);
00158
00159 branch(*this, flight, SET_VAR_NONE, SET_VAL_MIN_INC);
00160 }
00161
00163 virtual void
00164 print(std::ostream& os) const {
00165 for (int i=0; i<noOfFlights; i++) {
00166 os << "\tFlight " << i+1 << ":" << std::endl;
00167 os << "\t\tCrew\tStew.\tHost.\tFrench\tSpanish\tGerman"
00168 << std::endl << "\t";
00169 os << "\t" << requiredCrew[i].staff << "\t" << requiredCrew[i].stewards
00170 << "\t" << requiredCrew[i].hostesses << "\t"
00171 << requiredCrew[i].spanish
00172 << "\t" << requiredCrew[i].french << "\t" << requiredCrew[i].german
00173 << std::endl;
00174
00175 os << "\t\tSchedule:" << std::endl << "\t\t";
00176 if (flight[i].assigned()) {
00177 for (SetVarGlbValues d(flight[i]);d();++d) {
00178 os << employeeToName(static_cast<Employee>(d.val())) << " ";
00179 }
00180 } else {
00181 os << "\tRequired: ";
00182 for (SetVarGlbValues d(flight[i]);d();++d) {
00183 os << employeeToName(static_cast<Employee>(d.val())) << " ";
00184 }
00185 os << std::endl << "\t\t\tPossible: ";
00186 for (SetVarUnknownValues d(flight[i]);d();++d) {
00187 os << employeeToName(static_cast<Employee>(d.val())) << " ";
00188 }
00189 }
00190 os << std::endl << std::endl;
00191 }
00192 }
00193
00195 Crew(bool share, Crew& s)
00196 : Script(share,s) {
00197 flight.update(*this,share,s.flight);
00198 }
00200 virtual
00201 Space *copy(bool share) {
00202 return new Crew(share,*this);
00203 }
00204
00205 };
00206
00210 int
00211 main(int argc, char* argv[]) {
00212 Options o("Crew");
00213 o.iterations(100);
00214 o.parse(argc,argv);
00215 Script::run<Crew,DFS,Options>(o);
00216 return 0;
00217 }
00218
00219 namespace {
00220
00222 const char*
00223 employeeToName(Employee e) {
00224 switch(e) {
00225 case Tom : return "Tom";
00226 case David : return "David";
00227 case Jeremy: return "Jeremy";
00228 case Ron: return "Ron";
00229 case Joe: return "Joe";
00230 case Bill: return "Bill";
00231 case Fred: return "Fred";
00232 case Bob: return "Bob";
00233 case Mario: return "Mario";
00234 case Ed: return "Ed";
00235 case Carol: return "Carol";
00236 case Janet: return "Janet";
00237 case Tracy: return "Tracy";
00238 case Marilyn: return "Marilyn";
00239 case Carolyn: return "Carolyn";
00240 case Cathy: return "Cathy";
00241 case Inez: return "Inez";
00242 case Jean: return "Jean";
00243 case Heather: return "Heather";
00244 case Juliet: return "Juliet";
00245 default: GECODE_NEVER; return "";
00246 }
00247 }
00248
00249
00251 const int stewards[] =
00252 {Tom, David, Jeremy, Ron, Joe, Bill, Fred, Bob, Mario, Ed};
00254 const int noOfStewards = sizeof(stewards) / sizeof(int);
00256 const int hostesses[] =
00257 { Carol, Janet, Tracy, Marilyn, Carolyn, Cathy, Inez,
00258 Jean, Heather, Juliet };
00260 const int noOfHostesses = sizeof(hostesses) / sizeof(int);
00262 const int frenchSpeaking[] =
00263 { Bill, Inez, Jean, Juliet };
00265 const int noOfFrenchSpeaking = sizeof(frenchSpeaking) / sizeof(int);
00267 const int germanSpeaking[] =
00268 { Tom, Jeremy, Mario, Cathy, Juliet };
00270 const int noOfGermanSpeaking = sizeof(germanSpeaking) / sizeof(int);
00272 const int spanishSpeaking[] =
00273 { Joe, Bill, Fred, Mario, Marilyn, Inez, Heather };
00275 const int noOfSpanishSpeaking = sizeof(spanishSpeaking) / sizeof(int);
00276
00278 const Flight requiredCrew[] =
00279 { {4,1,1,1,1,1},
00280 {5,1,1,1,1,1},
00281 {5,1,1,1,1,1},
00282 {6,2,2,1,1,1},
00283 {7,3,3,1,1,1},
00284 {4,1,1,1,1,1},
00285 {5,1,1,1,1,1},
00286 {6,1,1,1,1,1},
00287 {6,2,2,1,1,1},
00288 {7,3,3,1,1,1} };
00289
00291 const int noOfFlights = sizeof(requiredCrew) / sizeof(Flight);
00292 }
00293
00294
00295