#include using namespace std; int M; int X[50000],Y[50000]; main() { cin>>M; for(int i=0;i>X[i]>>Y[i]; cout<<"? 0 0"<>bx>>by; cout<<"? 1 0"<>a1x>>a1y; cout<<"? 0 1"<>a2x>>a2y; cout<<"!"<