print('?',50); N=int(input())

#A+50が余りNとなる組を抽出
X=set()
for A in range(1,101):
    for B in range(A+1,101):
        if (A+50)%B==N: X.add((A,B))

#次の質問を決める
for y in range(1,101):
    Y=set()
    for A,B in X:
        Y.add((A+y)%B)
    if len(Y)!=len(X): continue
    else: break

print('?',y); M=int(input())
for A,B in X:
    if (A+y)%B==M: print('!',A,B); exit()