print('?', 100, flush = True)
x = int(input())
if x == 99:
	print('!', 99, 100, flush = True)
else:
	print('?', 99 - x, flush = True)
	B = int(input()) + 1
	for t in range(B):
		if (t + 100) % B == x:
			print('!', t, B, flush = True)
			break