model ModelName
uses "mmxprs"; !gain access to the Xpress-Optimizer solver

!sample declarations section
declarations
  LOC = 1..7
  A: array(LOC,LOC) of integer
  C: array(LOC,LOC) of integer
  
  x: array(LOC,LOC) of mpvar
end-declarations


C::[0,0,3,0,5,0,2,
	0,0,12,6,3,4,1,
	3,12,0,0,3,0,8,
	0,6,0,0,4,0,0,
	5,3,3,4,0,4,7,
	0,4,0,0,4,0,0,
	2,1,8,0,7,0,0]

forall(i,j in LOC | j<>i) A(i,j):=1

forall(i,j in LOC) x(i,j) is_binary

forall(i,j in LOC | C(i,j) = 0) x(i,j)= 0

forall(i in LOC) sum(j in LOC) (A(i,j)*x(i,j)+A(j,i)*x(j,i)) <= 1

ricavo:= sum(i,j in LOC |j>i) C(i,j)*x(i,j)

maximize(ricavo)

ricavo:=sum(i,j in LOC |j>i) A(i,j)*x(i,j)

maximize(ricavo)

writeln("Begin running model")
!...
writeln("End running model")

end-model