//interactive
{
    ll@N;
    VI a;
    rep(i,N){
        wt('?',N-1);
        rep(j,N)if(i!=j)wtN(j+1," ");
        wt("");
        ll@r;
        if(!r)a.push_back(i+1);
    }
    wt("!",(int)a.size());
    wt(a);
}