Based on Rothstein (1973). The Springfield City Police Department employs 30 police officers. Each officer works five days per week. The crime rate fluctuates with the day of the week, so the number of police officers required each day depends on the day of the week, as follows: Saturday, 28; Sunday, 18; Monday, 18; Tuesday, 24; Wednesday, 25; Thurs-day, 16; and Friday, 21. The police department wants to schedule police officers to minimize the number whose days off are not consecutive. Determine how to accomplish this goal.