#include <cassert>
#include <iostream>
using namespace std;

// #define TEST

int query(int);
void answer(int, int);

void solve() {
    const int r = query(100);
    if (r == 99) {
        answer(99, 100);
    } else {
        const int s = query(100 - r - 1);
        const int B = s + 1;
        answer(((r - 100) % B + B) % B, B);
    }
}

#ifdef TEST

int A, B;
void init(int a, int b) { A = a; B = b; }
int query(int x) {
    return (x + A) % B;
}

void answer(int a, int b) {
    cerr << A << ' ' << B << ' ' << a << ' ' << b << endl;
    assert(a == A && b == B);
}

int main() {
    for (int a = 0; a < 100; ++a)
        for (int b = a + 1; b <= 100; ++b) {
            init(a, b);
            solve();
        }
}

#else

int query(int x) {
    cout << "? " << x << endl;
    int r; cin >> r;
    return r;
}

void answer(int a, int b) {
    cout << "! " << a << ' ' << b << endl;
}

int main() {
    solve();
}

#endif