N = int(input())

ans = []
for i in range(1,N+1):
    S = ""
    for j in range(1,N+1):
        if j != i:
            S += str(j) + " "
    print('?',N-1)
    print(S)
    a = int(input())
    if a == 0:
        ans.append(i)
print('!',len(ans))
S = ""
for a in ans:
    S += str(a) + " "
print(S)