model chip
uses "mmxprs"

declarations
	Products:    set of string
	Operations:  set of string
	Profit:      array(Products) of real
	LabourTime:  array(Operations, Products) of real
	LabourLimit: array(Operations) of real
	Make:        array(Products) of mpvar
end-declarations
  
initializations from "Chip.dat"
	Products Operations Profit LabourLimit LabourTime
end-initializations

!Define the objective
TotalProfit := sum(p in Products)Profit(p)*Make(p)
 
!Define the constraints
forall(o in Operations) LabourCS(o):= 
	sum(p in Products) LabourTime(o, p)*Make(p) <= LabourLimit(o)
 	
!Maximize the objective
maximize(TotalProfit)
 
!Write out the solution
forall(p in Products)
	writeln("Make ", getsol(Make(p)), " ", p)
!
!Write out the objective value
!
writeln
writeln("Daily profit is £", getobjval)
!
!Indicate that the model has ended
!
end-model