#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>;
using vvi    = vector<vi>;
using vvl    = vector<vl>;
const ll INF = 1LL << 60;
const ll MOD = 1000000007;
template <class T>
bool chmax(T &a, const T &b) {
    return (a < b) ? (a = b, 1) : 0;
}
template <class T>
bool chmin(T &a, const T &b) {
    return (b < a) ? (a = b, 1) : 0;
}
template <class C>
void print(const C &c, std::ostream &os = std::cout) {
    std::copy(std::begin(c), std::end(c), std::ostream_iterator<typename C::value_type>(os, " "));
    os << std::endl;
}

int main() {
    int n;
    cin >> n;
    vector<int> ret;
    for (int i = 0; i < n; ++i) {
        cout << "? " << n - 1 << endl;
        vi a;
        for (int j = 0; j < n; ++j) {
            if (j != i)
                a.push_back(j);
        }
        print(a);
        int ans;
        cin >> ans;
        if (ans == 0)
            ret.push_back(i + 1);
    }
    cout << "! " << ret.size() << "\n";
    print(ret);
    return 0;
}