Although the current computer operation speed has reached billions of times per second, it is an instant thing for a computer to work out the arithmetic problem that a person can only work out with a pen and paper for an hour, it seems very stupid to talk to people with a computer with a fast brain. Computers have strong computing power, but their thinking ability and intelligence level are far behind the human brain. According to the idea of "Turing Test", from 65438 to 0990, there will be a World Lobna Prize for Artificial Intelligence every year. Top computer scientists from all over the world who study automatic chat robots get together to see if their computer programs can pass the Turing test. In the competition, these computers don't need to sound like Siri. As long as they type and chat, the task is less difficult. However, in the 20 years of competition, there has not been an automatic chat robot that can completely scare the judges. As long as the judges chat with the computer for a short time, they will immediately find that it is not a real person, but a computer program. Suzette, the best champion in the last two years, can only cheat the judges on the other side if the real person on the left side of the partition deliberately pretends to be a robot. According to the provisions of the Lobna Prize, the champion of the annual competition can only win the bronze prize; If you can fool all the judges so that they can't tell whether it's a robot or a real person, you can win a silver prize; If you can "cheat people successfully" not only by typing, but also by voice, you can win the gold medal.