Admins of this site decided that tests with segments-points (having a_i = b_i) are unfair. In fact, if we add the test

1
10 10 b

by 107th, then 70% of AC submits will become WA on this test. Now tests with a_i = b_i are incorrect, statement and tests were fixed. Submits having WA on tests with such kind of segments were rejudged, many of them got AC.