#include <bits/stdc++.h> using namespace std; long long i, j, l, r, mid, p, q, k, t, n, m, a, b, c, d, ans, cnt, res, arr[1000005]; const long long mod = 999993143, mod2 = 999993469; string s; bool check; int main(){ ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0); cin >> n; cout << "? 1" << endl; cin >> a; cout << "? 1" << endl; cin >> a; cout << "= 1" << endl; }