from random import shuffle
N = int(input())
P = list(range(1,N+1))
shuffle(P) 

paths = set()
def ask(a,b):
    if (a,b) in paths:
        return True
    elif (b,a) in paths:
        return False
    print("?",P[a],P[b])
    T = int(input())
    if T == 1:
        paths.add((a,b))
    else:
        paths.add((b,a))
    return T == 1


if ask(0,1):
    now = [0,1]
else:
    now = [1,0]

for i in range(2,N):
    if ask(i,now[0]):
        now.insert(0,i)
    elif ask(now[-1],i):
        now.append(i)
    else:
        ok = 0
        ng = len(now)-1
        while (abs(ok - ng) > 1):
            mid = (ok + ng) // 2
            if ask(now[mid],i):
                ok = mid
            else:
                ng = mid
        now.insert(ok+1,i)
print("!")
print(len(now)-1)
print(*list(map(lambda x:P[x],now)))