摘要：
struct Point { int id; LL x,y; Point(){} Point(LL x,LL y):x(x),y(y){} void Read(){scanf("%I64d%I64d",&x,&y);} LL operator^(const Point P)const{return x*P.y-y*P.x;} Point o... 阅读全文
posted @ 2016-07-23 19:44 tun~ 阅读(239) 评论(0) 推荐(0) 编辑