/* -*- coding: utf-8 -*- * * 2765.cc: No.2765 Cross Product - yukicoder */ #include #include using namespace std; /* constant */ /* typedef */ template struct Pt3d { T x, y, z; Pt3d() {} Pt3d(T _x, T _y, T _z) : x(_x), y(_y), z(_z) {} Pt3d(const Pt3d& pt) : x(pt.x), y(pt.y), z(pt.z) {} bool operator==(const Pt3d pt) const { return x == pt.x && y == pt.y && z == pt.z; } Pt3d operator+(const Pt3d pt) const { return Pt3d(x + pt.x, y + pt.y, z + pt.z); } Pt3d operator-() const { return Pt3d(-x, -y, -z); } Pt3d operator-(const Pt3d pt) const { return Pt3d(x - pt.x, y - pt.y, z - pt.z); } Pt3d operator*(T t) const { return Pt3d(x * t, y * t, z * t); } Pt3d operator/(T t) const { return Pt3d(x / t, y / t, z / t); } T dot(Pt3d v) const { return x * v.x + y * v.y + z * v.z; } Pt3d cross(Pt3d v) const { return Pt3d(y * v.z - z * v.y, z * v.x - x * v.z, x * v.y - y * v.x); } }; typedef Pt3d pt3d; /* subroutines */ void readpt(pt3d &p) { scanf("%d%d%d", &p.x, &p.y, &p.z); } void printpt(pt3d &p) { printf("%d %d %d\n", p.x, p.y, p.z); } /* global variables */ /* subroutines */ /* main */ int main() { pt3d a, b; readpt(a), readpt(b); pt3d c = a.cross(b); printpt(c); return 0; }