n = int(input())
Ans = []
X = []
cnt = 0
for i in range(1, n+1):
    print("?", 1, n-1, i, *[a for a in range(1, n+1) if a != i])
    t = int(input())
    if not t:
        Ans.append(i)
for i in range(n-1):
    x = Ans.pop()
    l = 0
    r = len(Ans)
    S = [(l, r)]
    while S:
        l, r = S.pop()
        if l == r: continue
        if r-l == 1:
            X.append((x, Ans[l]))
        else:
            m = (l+r) >> 1
            print("?", 1, m-l, x, *Ans[l: m])
            t = int(input())
            if t:
                S.append((l, m))
                print("?", 1, r-m, x, *Ans[m: r])
                t = int(input())
                if t:
                    S.append((m, r))
            else:
                S.append((m, r))

print("!", len(X))
for l, r in X:
    print(l, r)