print('? 100', flush=True)
a = int(input())
if a == 99:
    print('! 99 100', flush=True)
    exit()
query = 100-a-1
print('? '+str(query), flush=True)
b = int(input())
B = b+1
for x in range(B):
    if (100+x) % B == a:
        print('! {} {}'.format(x, B), flush=True)