A supermarket holds a store celebration promotion  Among them, the specific regulations are as follows: Only in a shop on the day of consumption to buy A item and B item  at least the same, in order to get a bear giveaway Only VIP members who consume at least one category A or category B item at one time on the same day will receive a 20% discount on all purchases
If you buy more than five pieces of category B item, you can apply for VIP membership
It is impossible for Zhang Li to get a 20% discount.