#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define all(vec) vec.begin(),vec.end()
#define MOD 1000000007
#define int long long

signed main(){
    int n;cin>>n;
    set<int> ans;
    rep(i,n){
        printf("? %lld\n",n-1);
        int j=1;
        if(i==0){
            printf("2");
            j=2;
        }else printf("1");
        for(;j<n;j++){
            if(i==j)continue;
            printf(" %lld",j+1);
        }
        cout<<endl;
        int u;
        cin>>u;
        if(!u)ans.insert(i+1);
    }
    printf("! %lld\n",ans.size());
    int e=0;
    for(auto a:ans){
        if(e==0)printf("%lld",a);
        else printf(" %lld",a);
        e=1;
    }
    cout<<endl;
}