Every year, national lines are classified according to different disciplines: total score, single subject (full score = 100) and single subject (full score >); 100) three scores, defining the minimum standard. The national line of the one-year entrance examination for mathematics is not necessarily the same, but it is basically 60 points. Found the following four years: 20 15: 57, 20 14: 57, 20 13: 60, 20 12: 57.