# declare the variables and their bounds, 
# set notation could be used, but this is straightforward
var x0 >= 0; 
var x1 >= 0, <= 4; 


# specify the objective function
maximize profit:
                x0 + x1;
        
# specify the constraints

 subject to inequality1:
           5 <= -x0 + x1;
                

                

                

                
  

 