#include <bits/stdc++.h>
using namespace std;

using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
using vi = vector<int>;
using vl = vector<ll>;
#define rep3(i, a, b, c) for (ll i = (a); i < (b); i += (c))
#define rep2(i, a, b) rep3(i, a, b, 1)
#define rep1(i, n) rep2(i, 0, n)
#define rep0(n) rep1(aaaaa, n)
#define ov4(a, b, c, d, name, ...) name
#define rep(...) ov4(__VA_ARGS__, rep3, rep2, rep1, rep0)(__VA_ARGS__)
#define per(i, a, b) for (ll i = (a) - 1; i >= (b); i--)
#define fore(e, v) for (auto&& e : v)
#define all(a) begin(a), end(a)
#define sz(a) (int)(size(a))
#define lb(v, x) (lower_bound(all(v), x) - begin(v))
#define eb emplace_back

template <typename T, typename S>
bool chmin(T& a, const S& b) {
  return a > b ? a = b, 1 : 0;
}
template <typename T, typename S>
bool chmax(T& a, const S& b) {
  return a < b ? a = b, 1 : 0;
}
const int INF = 1e9 + 100;
const ll INFL = 3e18 + 100;
#define i128 __int128_t
struct _ {
  _() { cin.tie(0)->sync_with_stdio(0), cout.tie(0); }
} __;

int main(){
  vector<pii> X;
  const int YXMAX=1'000'000;
  X.eb(pii{0,YXMAX+1});
  vi dX;
  auto query=[&](int xl,int xr,int yl,int yr){
    cout<<"? "<<xl<<' '<<xr-1<<' '<<yl<<' '<<yr-1<<endl;
    int ret;
    cin>>ret;
    return ret;
  };
  while(!X.empty()){
    vector<pii> X2;
    fore(i,X){
      if(i.first+1==i.second){
        dX.eb(i.first);
        continue;
      }
      int l=i.first,r=i.second,mid=(l+r)/2;
      if(query(l,mid,0,YXMAX+1)){
        X2.eb(pii{l,mid});
      }
      if(query(mid,r,0,YXMAX+1)){
        X2.eb(pii{mid,r});
      }
    }
    X=X2;
  }
  vector<pii> ans;
  fore(x,dX){
    vector<pii> Y;
    Y.eb(pii{0,YXMAX});
    while(!Y.empty()){
      vector<pii> Y2;
      fore(i,Y){
        if(i.first+1==i.second){
          ans.eb(pii{x,i.first});
          continue;
        }
        int l=i.first,r=i.second,mid=(l+r)/2;
        if(query(x,x+1,l,mid)){
          Y2.eb(pii{l,mid});
        }
        if(query(x,x+1,mid,r)){
          Y2.eb(pii{mid,r});
        }
      }
      Y=Y2;
    }
  }
  cout<<"! "<<sz(ans)<<endl;
  fore(i,ans)cout<<i.first<<' '<<i.second<<endl;
}