print("?", 100)
k1 = int(input())
if k1 == 99:
    print("!", 99, 100)
else:
    print("?", 100 - k1 - 1)
    k2 = int(input())
    B = k2 + 1
    for A in range(100):
        if (100 + A) % B == k1 and (100 - k1 - 1 + A) % B == k2:
            print("!", A, B)
            quit()