Who is free at 9:00 AM?
8 barbers can do Shampoo then, in the shop's own order.
No preference takes the lightest book of the 8 barbers open at 9:00 AM, so the work spreads across the shop instead of piling onto one chair.
8 barbers can do Shampoo then, in the shop's own order.
No preference takes the lightest book of the 8 barbers open at 9:00 AM, so the work spreads across the shop instead of piling onto one chair.