Update 1: I really can't stand it.

Problems with the existing system

Update 2: I don't have a satisfactory answer, but first, I don't want to reduce the score, and second, I want to add it to others.

Because Xiao Ming thinks that barbers in barbershops have good skills, they naturally get more haircuts. Because there is a lot of business, the barber has no time to clean, so the hair is everywhere. The barber in another barber shop has poor haircut skills, and few people patronize it. Naturally, there is no hair and time to clean it, so the place is clean and tidy. In addition, the hairdresser's hairstyle in the barber shop with hair all over the floor is loose, because he can't cut it himself, so he must let the barber in the other barber shop cut it. Moreover, the hairdresser's hair in that clean barber shop is very neat, which proves that the hairdresser with hair all over the floor has good skills. So Xiaoming decided to go back to his original barber shop. Right? Happy New Year!

Because there are many people in the dirty barber shop.

Quite (on the contrary) people, eD barber D, will have loose hair first.

Reference: books

Xiao Ming went to tidy up the room, thinking that guests would be forbidden to tidy up first, and the other room would be covered with many people's hair, so Xiao Ming went to the room with hair all over the floor LA2007-12-318: 09: 22 What's the problem?

Reference: I