#include <iostream>
#include <string>
#include <algorithm>
#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <iomanip>
#include <cmath>
#include <stdio.h>
#include <queue>
#include <deque>
#include <cstdio>
#include <set>
#include <map>
#include <bitset>
#include <stack>
#include <cctype>
using namespace std;
vector<int> ans;
int main() {
	int n;
	cin >> n;
	for (int i = 1; i <= n; i++) {
		cout << "? " << n - 1 << endl;
		for (int j = 1; j <= n; j++) {
			if (i == j) {
				continue;
			}
			cout << j << " ";
		}
		cout << endl;
		bool b;
		cin >> b;
		if (!b) {
			ans.emplace_back(i);
		}
	}
	cout << "! " << ans.size() << endl;
	for (int i = 0; i < ans.size(); i++) {
		cout << ans[i] << " ";
	}
	cout << endl;
}