#include <bits/stdc++.h>
using namespace std;

bool ans[1010];
int main() {
	int n; cin >> n;
	int k = 0;
	for(int i = 1; i <= n; ++i) {
		cout << "? " << n - 1 << '\n';
		bool f = true;
		for(int j = 1; j <= n; ++j) {
			if(f and j != i) {
				cout << j;
				f = false;
			} else if(j != i) {
				cout << " " << j;
			}
		}
		cout << '\n';
		cout.flush();
		cin >> ans[i];
		if(not ans[i]) ++k;
	}
	cout << "! " << k << '\n';
	bool f = true;
	for(int j = 1; j <= n; ++j) {
		if(f and not ans[j]) {
			cout << j;
			f = false;
		} else if(not ans[j]) {
			cout << " " << j;
		}
	}
	cout << '\n';
	return 0;
}