## Blending problem data from Sect. 2.2 in Course Notes

set gas_types := gas1 gas2;   # i: 2 types of gas (e.g. premium, regular)
set crudes := crude1 crude2 crude3; 
                        # j: 3 different crudes (e.g. light, heavy...)

param:  min_octane max_sulfur revenue demand:=
                        # k: in level/%/$-per-barrel/barrels
gas1  82 2.05 30 5000
gas2  88 2.15 25 3000;


param: octane sulfur cost limits :=   # crudes: level/%/$-per-barrel/barrels
   crude1    82 .75  18  5000
   crude2    89  1.5 15  5000
   crude3    97  2.5 10  5000;