package contest191129;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.Scanner;

public class CT {
	static Scanner in;
	static PrintWriter out;
	static String INPUT = "";
	
	static void solve()
	{
		int n = ni();
		int[] mz = new int[n];
		int p = 0;
		for(int i = 1;i <= n;i++) {
			out.println("? " + (n-1));
			for(int j = 1;j <= n;j++) {
				if(i != j)out.print(j + " ");
			}
			out.println();
			out.flush();
			int res = ni();
			if(res == 0) {
				mz[p++] = i;
			}
		}
		out.println("! " + p);
		for(int i = 0;i < p;i++) {
			out.print(mz[i] + " ");
		}
		out.println();
		out.flush();
	}
	
	public static void main(String[] args) throws Exception
	{
		in = INPUT.isEmpty() ? new Scanner(System.in) : new Scanner(INPUT);
		out = new PrintWriter(System.out);
		
		solve();
		out.flush();
	}
	
	static int ni() { return Integer.parseInt(in.next()); }
	static long nl() { return Long.parseLong(in.next()); }
	static double nd() { return Double.parseDouble(in.next()); }
	static void tr(Object... o) { if(INPUT.length() != 0)System.out.println(Arrays.deepToString(o)); }
}