n = int(input())
val = n-1
kaku = []
for i in range(n):
    if val < 2:
        if i % 2 == 0:
            kaku.append(n-(i//2))
        else:
            kaku.append(i//2+1)
        break
    print("?",val,flush=True)
    a = kaku[:]
    for j in range(val-len(kaku)):
        a.append(j+i//2+i%2+1)
    a.sort()
    print(*a,flush=True)
    ans = input()
    if ans == "1":#不要
        val -= 1
    else:
        if i % 2 == 0:
            kaku.append(n-(i//2))
        else:
            kaku.append(i//2+1)
a = kaku[:]
a.sort()
print("!",len(a),flush=True)
print(*a,flush=True)
exit()