def question(n, m):
    print("?", n, m)
    res = input()
    if res == ">":
        return 1
    elif res == "=":
        return 0
    else:
        return -1

def answer(n):
    print("!", n)

if question(1, str(1)+"0"*100) >= 0:
    answer(str(1)+"0"*100)
    exit()

ans = []
for i in reversed(range(100)):
    for j in reversed(range(1, 10)):
        res = question(1, str(j)+"0"*i)
        if 0 <= res:
            ans.append(j)
            break

answer("".join(map(str, ans)))