Given n points on a 2D plane, find the maximum number of points that lie on the same straight line.
题目:Givennpointsona2Dplane,findthemaximumnumberofpointsthatlieonthesamestraightline.(给的点是用vector保存)/***Definitionforapoint.*structPoint{*intx;*inty;*Point():x(0),y(0){}*Point(inta,intb):x(a),y(b){}*};*