One of the answers makes me call it magic. The man said, "On the first day, I took fifty cents to the school cafeteria and asked my aunt who cooked rice to make a bowl of fifty cents. Then I went to the soup buffet and cooked two bowls of patriotic soup, a bowl of fishing, laver eggs and so on. In the second bowl, just take some soup. " The next day, maybe patriotic soup will be replaced by tomato and egg soup, kelp tofu soup, or mustard soup (patriotic soup is standard). In this way, there will be not only rice, vegetables and soup, but also three days of the same kind. Three days later, I spent three yuan, leaving two yuan to buy a bottle of water. "
That's a great answer It seems that this person should have done many such things. But it sounds good. ...