HI. I have been trying to solve this problem but while I was second guessing myself I noticed that the first test case is not right but of course this problem was in a contest and a lot of people solved it so I thought (again) I was wrong so could anyone please explain the first test case because the point 1 (2,0) = -2 and point 2 (1,0) = -1 and x1>x2 and y1=y2 so point 1 value should be bigger that point 2 value but -2<-1 can someone please explain the link to the problem thanks in advance.