DEBUG = False


def solve(a=-1, b=-1):
    def ask(x):
        if DEBUG:
            return (a + x) % b
        else:
            print(f"? {x}", flush=True)
            return int(input())

    r = ask(100)
    for x in range(1, 100):
        se = set()
        ok = True
        for bb in range(1, 101):
            if r >= bb:
                continue
            aa = (r - 100) % bb
            yy = (aa + x) % bb
            if yy not in se:
                se.add(yy)
            else:
                ok = False
                break

        if ok:
            r2 = ask(x)

            for aa in range(100):
                for bb in range(aa + 1, 101):
                    if (aa + 100) % bb == r and (aa + x) % bb == r2:
                        if DEBUG:
                            assert (aa, bb) == (a, b)
                        else:
                            print(f"! {aa} {bb}")
                        return
            assert False

    assert False


if DEBUG:
    for a in range(100):
        for b in range(a + 1, 101):
            solve(a, b)
else:
    solve()