记忆长满了草

摘要： A honeycomb is a mass wax cells built by honey bees, which can be described as a regular tiling of the Euclidean plane, in which three hexagons meet a 阅读全文

摘要： #include <iostream> using namespace std; typedef struct{ double x, y, z;}Point,Vector; typedef struct{ Point p1, p2;}LineSegMent; //向量减法Vector sub(Vec 阅读全文