There are 30 points. The new college entrance examination mode is "3 plus 1 2 plus" mode, and the main subjects are Chinese, mathematics and foreign languages. The use of test scores is included in the total score, with a full score of 150 for each subject. Choose a course in physics and history, and also use the original score to count the total score of the candidates, out of 100. Politics, geography, chemistry and biology, choose two exams. The results of the selected subjects are included in the total score according to the results, not included in the original scores of the candidates, and the full score of each subject is 100. In the calculation of such a scoring method, if the candidate hands in a blank sheet of paper in the re-selected subject, there will eventually be a score. For example, Xiao Wang handed in a blank sheet of paper. Generally speaking, his thesis score is 0. But under the scoring system, starting from 30 points, his score belongs to the last 1, and the final score is 30 points.