import sys

print("? 100")
sys.stdout.flush()
A100 = int(input())

X = 99 - 2 * A100
if X < 1:
    X = 1
print("?", X)
sys.stdout.flush()
AX = int(input())

for a in range(100):
    for b in range(a + 1, 101):
        if (a + 100) % b == A100 and (a + X) % b == AX:
            print("!", a, b)
            exit()