According to Lishui local treasure, swimming is a compulsory item in the physical education examination for junior high school graduates in Lishui in 2022. If the swimming speed of 100 meters is within 3 minutes 10 second, you can get full marks, which is 10. The physical education examination of Lishui senior high school entrance examination is divided into three major items: compulsory, random and optional, with a score of 10 for each item. Candidates can choose one sport in each major, with a total score of 30 points.