#define _USE_MATH_DEFINES #include using namespace std; //template #define rep(i,a,b) for(int i=(a);i<(b);i++) #define rrep(i,a,b) for(int i=(a);i>(b);i--) #define ALL(v) (v).begin(),(v).end() typedef long long int ll; const int inf = 0x3fffffff; const ll INF = 0x3fffffffffffffff; template inline bool chmax(T& a,T b){ if(a inline bool chmin(T& a,T b){ if(a>b){a=b;return 1;}return 0; } //template end int main(){ int n; scanf("%d",&n); bool expo[1010]={}; rep(i,0,n){ printf("? %d\n",n-1); rep(j,0,n)if(i!=j)printf("%d ",j+1); fflush(stdout); int tmp; scanf("%d",&tmp); expo[i]=!tmp; } int cnt=0; rep(i,0,n)if(expo[i])cnt++; printf("! %d\n",cnt); rep(i,0,n)if(expo[i])printf("%d ",i+1); fflush(stdout); return 0; }