Daniel's Barber Shop at Newark Airport is open 7 days a week but has fluctuating demand. Daniel Ball is interested in treating his barbers as well as he can with steady work and preferably 5 days of work with two consecutive days off. His analysis of his staffing needs resulted in the following plan. Schedule Daniel's staff with the minimum number of barbers.
| Day | 
|   | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. | 
| Barber needed | 6 | 5 | 5 | 5 | 6 | 4 | 3 |