Consider an assignment problem to assign 1 + 2 people to do jobs (assuming min{1, 2} ). The first 1 people are female and the next 2 (i.e., the rest) people are male. Suppose that each job will be assigned to exactly two people with different genders and that each person can do at most one job. It costs to assign person to do job ( = 1, , 1 + 2; = 1, , ). Formulate a model to minimize the total cost of the assignment.