#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < (n); i++)
using namespace std;
typedef long long ll;

int main(){
    cin.tie(0);
    ios::sync_with_stdio(0);
    
    int N; cin >> N;
    vector<int> b;
    rep(i,N) {
        cout << "?" << " " << N - 1 << endl;
        rep(j,N) if(j != i) cout << j + 1 << " ";
        cout << endl;
        cout.flush();
        int ans; cin >> ans;
        if(ans == 0) b.push_back(i + 1);
    }

    cout << "!" << " " << b.size() << endl;
    for(int x : b) cout << x << " "; cout << endl;
    cout.flush();
}