#include<iostream>
#include<vector>
using namespace std;

int main(){
    int n; cin >> n;
  	vector<int> v;
  	for(int i=1;i<=n;i++){
      	cout <<"? " <<n-1 << endl;
    	for(int j=1;j<=n;j++) if(j!=i) cout << j << " ";
      	cout << endl;
      	int ans; cin >> ans;
    	if(ans!=1) v.push_back(i);
    }
  	cout << "! " << v.size() << endl;
  	for(auto x:v) cout << x << " ";
  cout << endl;
  return 0;
}