Файловый менеджер

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********* Homogeneous VRP (withput defining set of vehicle)************* ******* Multiple Depots **************************************************************************** Author: Ali Papi (papimath@hotmail.com) *Telegram Group: https://t.me/joinchat/BUMSRz7BQKYWANk_vz5k2Q Set Node /depot1depot10 , City1City100/ Depot(Node) /depot1depot10/ City(Node)/City1City100/ ; Alias(Node,i,j) ; Parameter c(i,j); c(i,j)$(ord(j)>ord(i))=uniform(10,1000); c(i,j)$(ord(j)<ord(i))=c(j,i); Display c; Binary Variable x(i,j) ; x.fx(depot,depot)=0; Free Variable Cost ; Positive Variable u(i) ; u.fx(Depot)=0; Equation obj Eq1 Eq2 Eq3 Eq4 ; obj.. cost =e= sum({i,j},c(i,j)x(i,j)); Eq1(city).. sum({i},x(i,city)) =e= 1; Eq2(city).. sum({i},x(city,i)) =e= 1; Eq3(depot).. sum({i},x(i,depot)) =e= sum({i},x(depot,i)); Eq4(i,j)$(city(j)).. u(j) =g= u(i) + x(i,j) - card(City)(1-x(i,j)); Model VRP / obj Eq1 Eq2 Eq3 Eq4 / Options MIP=CPLEX RESLIM=100 OPTCR=0 ; Scalar ST,RT; ST=Jnow; Solve VRP us MIP min Cost; runtime second RT=(Jnow-ST)360024; Number of vehicles traveling from each depot parameter NVD(depot); NVD(depot)=sum({j},x.l(depot,j)); Number of vehicles parameter NV; NV=sum({depot},NVD(depot)); Display NVD NV x.l u.l cost.l "Run Time" RT Author: Ali Papi (papimath@hotmail.com) ****************************************

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