#include<bits/stdc++.h>
using namespace std;

using i64 = long long;

void solve() {
    for(int i = 1923; i <= 2022; ++i) {
        cout << "? " << i << endl;
        int x; cin >> x;
        if(x == 0) {
            cout << "! " << i << endl;
            return;
        }
    }
    cout << "! 2023" << endl;
    return;
}

int main() {
    ios::sync_with_stdio(0); cin.tie(0);
    int t; cin >> t; while(t--) solve();
    return 0;
}