def f(x):
    print('?', x, flush=True)
    return int(input())
def main():
    y = 100 - f(100)
    if y == 1:
        print("! 99 100")
        return
    B = f(y - 1) + 1
    A = -y % B
    print('!', A, B)
    return
main()