def main():
    N = int(input())
    sums = []
    # for upper in range(1, 2):
    #     print(f"? 1 {upper}")
    #     sum_ = int(input())
    #     sums.append(sum_)
    print(f"? 1 {2}")
    sum_ = int(input())
    sums.append(sum_)
    # print(f"? 1 {1}", flush=True)
    # sums.append(int(input()))
    print("! 1 2 3", flush=True)


if __name__ == "__main__":
    main()