#define _USE_MATH_DEFINES
#include <cstdio>
#include <iostream>
#include <sstream>
#include <fstream>
#include <iomanip>
#include <algorithm>
#include <cmath>
#include <complex>
#include <string>
#include <vector>
#include <array>
#include <list>
#include <queue>
#include <stack>
#include <set>
#include <map>
#include <bitset>
#include <numeric>
#include <limits>
#include <climits>
#include <cfloat>
#include <functional>
#include <iterator>
#include <memory>
#include <regex>
using namespace std;

int main()
{
    int n;
    cin >> n;

    vector<bool> ans(n);
    for(int i=0; i<n; ++i){
        cout << "? " << (n-1) << endl;
        bool isFirst = true;
        for(int j=0; j<n; ++j){
            if(i == j)
                continue;
            if(isFirst)
                isFirst = false;
            else
                cout << ' ';
            cout << (j+1);
        }
        cout << endl;

        int res;
        cin >> res;
        ans[i] = !(bool)res;
    }

    int cnt = 0;
    for(int i=0; i<n; ++i){
        if(ans[i])
            ++ cnt;
    }
    cout << "! " << cnt << endl;
    bool isFirst = true;
    for(int i=0; i<n; ++i){
        if(!ans[i])
            continue;
        if(isFirst)
            isFirst = false;
        else
            cout << ' ';
        cout << (i+1);
    }
    cout << endl;

    return 0;
}