#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
using namespace std;
#define FOR(i,m,n) for(int i=(m);i<(n);++i)
#define REP(i,n) FOR(i,0,n)
#define ALL(v) (v).begin(),(v).end()
using ll = long long;
constexpr int INF = 0x3f3f3f3f;
constexpr long long LINF = 0x3f3f3f3f3f3f3f3fLL;
constexpr double EPS = 1e-8;
constexpr int MOD = 998244353;
// constexpr int MOD = 1000000007;
constexpr int DY4[]{1, 0, -1, 0}, DX4[]{0, -1, 0, 1};
constexpr int DY8[]{1, 1, 0, -1, -1, -1, 0, 1};
constexpr int DX8[]{0, -1, -1, -1, 0, 1, 1, 1};
template <typename T, typename U>
inline bool chmax(T& a, U b) { return a < b ? (a = b, true) : false; }
template <typename T, typename U>
inline bool chmin(T& a, U b) { return a > b ? (a = b, true) : false; }
struct IOSetup {
  IOSetup() {
    std::cin.tie(nullptr);
    std::ios_base::sync_with_stdio(false);
    std::cout << fixed << setprecision(20);
  }
} iosetup;

bool query(const int a, const int b) {
  cout << "? " << a + 1 << ' ' << b + 1 << endl;
  int t; cin >> t;
  assert(t != -1);
  return t == 1;
}

int main() {
  int n; cin >> n;
  vector<int> c{0};
  FOR(i, 1, n) {
    if (query(c.back(), i)) {
      c.emplace_back(i);
    } else if (query(i, c.front())) {
      c.emplace(c.begin(), i);
    } else {
      int lb = 0, ub = c.size() - 1;
      while (ub - lb > 1) {
        const int mid = (lb + ub) / 2;
        (query(c[mid], i) ? lb : ub) = mid;
      }
      c.emplace(c.begin() + lb, i);
    }
  }
  cout << "!\n" << n - 1 << '\n';
  REP(i, n) {
    cout << c[i] + 1;
    if (i + 1 == n) {
      cout << endl;
    } else {
      cout << ' ';
    }
  }
  return 0;
}