"""
100 + A = kB + y
=> 100 + A - y ≡ 0 (mod B)

(100 - y - 1) + A = k'B + y2
=> B - 1= y2 <=> B = y2 + 1
"""


print('? 100')
y = int(input())

if not (1 <= 100 - y - 1 <= 100):
    print('!', 99, 100)
    exit()

print(f'? {100 - y - 1}')
y2 = int(input())

B = y2 + 1
for A in range(B):
    if (100 + A) % B == y and (100 - y - 1 + A) % B == y2:
        print('!', A, B)
        break