#include #include #define rep(i,n) for(int i=0;i P; template ostream& operator<<(ostream& os, const static_modint& a) {os << a.val(); return os;} template ostream& operator<<(ostream& os, const dynamic_modint& a) {os << a.val(); return os;} template istream& operator>>(istream& is, static_modint& a) {long long x; is >> x; a = x; return is;} template istream& operator>>(istream& is, dynamic_modint& a) {long long x; is >> x; a = x; return is;} template istream& operator>>(istream& is, vector& v){int n = v.size(); assert(n > 0); rep(i, n) is >> v[i]; return is;} template ostream& operator<<(ostream& os, const pair& p){os << p.first << ' ' << p.second; return os;} template ostream& operator<<(ostream& os, const vector& v){int n = v.size(); rep(i, n) os << v[i] << (i == n - 1 ? "\n" : " "); return os;} template ostream& operator<<(ostream& os, const vector>& v){int n = v.size(); rep(i, n) os << v[i] << (i == n - 1 ? "\n" : ""); return os;} template ostream& operator<<(ostream& os, const set& se){for(T x : se) os << x << " "; os << "\n"; return os;} template ostream& operator<<(ostream& os, const unordered_set& se){for(T x : se) os << x << " "; os << "\n"; return os;} template ostream& operator<<(ostream& os, const atcoder::segtree& seg){int n = seg.max_right(0, [](S){return true;}); rep(i, n) os << seg.get(i) << (i == n - 1 ? "\n" : " "); return os;} template ostream& operator<<(ostream& os, const atcoder::lazy_segtree& seg){int n = seg.max_right(0, [](S){return true;}); rep(i, n) os << seg.get(i) << (i == n - 1 ? "\n" : " "); return os;} template void chmin(T& a, T b){a = min(a, b);} template void chmax(T& a, T b){a = max(a, b);} const int D = 1000000; int main(){ int n; cout << "? 0 " << D << " 0 " << D << "\n"; cin >> n; vector> vec; auto f = [&](int xl, int xr, int yl, int yr, int n, auto f){ if(n == 0) return; if(xr - xl >= 1){ int xm = (xr + xl) / 2; int n1; cout << "? " << xl << ' ' << xm << ' ' << yl << ' ' << yr << "\n"; cin >> n1; f(xl, xm, yl, yr, n1, f); int n2; cout << "? " << xm << ' ' << xr << ' ' << yl << ' ' << yr << "\n"; cin >> n2; f(xm, xr, yl, yr, n2, f); }else if(yr - yl >= 1){ int ym = (yr + yl) / 2; int n1; cout << "? " << xl << ' ' << xr << ' ' << yl << ' ' << ym << "\n"; cin >> n1; f(xl, xr, yl, ym, n1, f); int n2; cout << "? " << xl << ' ' << xr << ' ' << ym << ' ' << yr << "\n"; cin >> n2; f(xl, xr, ym, yr, n2, f); }else{ assert(n == 1); assert(xl == xr); assert(yl == yr); vec.emplace_back(xl, yl); } }; f(0, D, 0, D, n, f); cout << "! " << n << "\n"; for(auto [x, y] : vec){ cout << x << ' ' << y << "\n"; } return 0; }