#include <iostream>
#include <vector>
using namespace std;
int main(){
	int N;
	cin >> N;
	vector<int> b;
	for (int i = 0; i < N; i++){
		vector<int> a;
		for (int j = 0; j < N; j++){
			if (i != j){
				a.push_back(j);
			}
		}
		cout << '?' << ' ' << N - 1 << endl;
		for (int j = 0; j < N - 1; j++){
			cout << a[j] + 1;
			if (j < N - 2){
				cout << ' ';
			}
		}
		cout << endl;
		int ans;
		cin >> ans;
		if (ans == 0){
			b.push_back(i);
		}
	}
	int K = b.size();
	cout << '!' << ' ' << K << endl;
	for (int i = 0; i < K; i++){
		cout << b[i] + 1;
		if (i < K - 1){
			cout << ' ';
		}
	}
	cout << endl;
}