#include using namespace std; #define rep(i, n) for (int i = 0; i < (n); i++) #define per(i, n) for (int i = (n)-1; i >= 0; i--) #define rep2(i, l, r) for (int i = (l); i < (r); i++) #define per2(i, l, r) for (int i = (r)-1; i >= (l); i--) #define each(e, v) for (auto &e : v) #define MM << " " << #define pb push_back #define eb emplace_back #define all(x) begin(x), end(x) #define rall(x) rbegin(x), rend(x) #define sz(x) (int)x.size() using ll = long long; using pii = pair; using pil = pair; using pli = pair; using pll = pair; template using minheap = priority_queue, greater>; template using maxheap = priority_queue; template bool chmax(T &x, const T &y) { return (x < y) ? (x = y, true) : false; } template bool chmin(T &x, const T &y) { return (x > y) ? (x = y, true) : false; } template int flg(T x, int i) { return (x >> i) & 1; } template void print(const vector &v, T x = 0) { int n = v.size(); for (int i = 0; i < n; i++) cout << v[i] + x << (i == n - 1 ? '\n' : ' '); if (v.empty()) cout << '\n'; } template void printn(const vector &v, T x = 0) { int n = v.size(); for (int i = 0; i < n; i++) cout << v[i] + x << '\n'; } template int lb(const vector &v, T x) { return lower_bound(begin(v), end(v), x) - begin(v); } template int ub(const vector &v, T x) { return upper_bound(begin(v), end(v), x) - begin(v); } template void rearrange(vector &v) { sort(begin(v), end(v)); v.erase(unique(begin(v), end(v)), end(v)); } template vector id_sort(const vector &v, bool greater = false) { int n = v.size(); vector ret(n); iota(begin(ret), end(ret), 0); sort(begin(ret), end(ret), [&](int i, int j) { return greater ? v[i] > v[j] : v[i] < v[j]; }); return ret; } template pair operator+(const pair &p, const pair &q) { return make_pair(p.first + q.first, p.second + q.second); } template pair operator-(const pair &p, const pair &q) { return make_pair(p.first - q.first, p.second - q.second); } template istream &operator>>(istream &is, pair &p) { S a; T b; is >> a >> b; p = make_pair(a, b); return is; } template ostream &operator<<(ostream &os, const pair &p) { return os << p.first << ' ' << p.second; } // struct io_setup { // io_setup() { // ios_base::sync_with_stdio(false); // cin.tie(NULL); // cout << fixed << setprecision(15); // } // } io_setup; const int inf = (1 << 30) - 1; const ll INF = (1LL << 60) - 1; // const int MOD = 1000000007; const int MOD = 998244353; int query(int i, int j) { cout << "? " << i + 1 MM j + 1 << '\n'; int ret; cin >> ret; return ret; } int experiment(int N) { auto rec = [](int x, auto &&rec) -> int { if (x == 1) return 0; return (x - 1) + rec(x / 2, rec) + rec((x + 1) / 2, rec); }; return rec(N, rec); } int main() { int N; cin >> N; auto rec = [&](vector &v, auto &&rec) -> void { int n = sz(v); if (n == 1) return; auto l = vector(begin(v), begin(v) + n / 2); auto r = vector(begin(v) + n / 2, end(v)); rec(l, rec), rec(r, rec); int pl = 0, pr = 0; while (pl + pr < n) { if (pl == sz(l)) { v[pl + pr] = r[pr]; pr++; } else if (pr == sz(r)) { v[pl + pr] = l[pl]; pl++; } else { if (query(l[pl], r[pr]) == 1) { v[pl + pr] = l[pl]; pl++; } else { v[pl + pr] = r[pr]; pr++; } } } }; vector v(N); iota(all(v), 0); rec(v, rec); cout << "!\n"; cout << N - 1 << '\n'; print(v, 1); }