#include<bits/stdc++.h>
using namespace std;
int main(){
  int n;cin >> n;
  vector<bool> b(n);
  int k=0;
  for(int i=1;i<=n;i++){
    cout << '?' << " " << n-1 << endl;
    for(int j=1;j<=n;j++){
      if(i!=j){
        cout << j << " ";
      }
    }
    cout << endl;
    int ans;cin >> ans;
    if(!ans){
      k++;
      b[i-1]=true;
    }
  }
  cout << '!' << " " << k << endl;
  for(int i=0;i<n;i++){
    if(b[i]){
      cout << i+1 << " ";
    }
  }
  cout << endl;
}