#include #include #include #define EPS 0.000001 using namespace std; double R; pair rot(double x,double y,double x2,double y2,double U) { x -= x2; y -= y2; double new_x = x * cos(U) - y * sin(U); double new_y = x * sin(U) + y * cos(U); new_x += x2; new_y += y2; return make_pair(new_x,new_y); } pair sim(double x,double y,double x2,double y2) { return make_pair(x2-x,y2-y); } int main() { double pi; int x, y; pi = atan(1.0) * 4.0; cin >> R; printf("0 0\n"); fflush(stdout); while(cin >> x) { cin >> y; pair now = rot(1.0 * x, 1.0 * y, 0.0, 0.0, pi); printf("%d %d\n", (int)floor(now.first + EPS), (int)floor(now.second + EPS)); } return 0; }