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


if __name__ == "__main__":
    main()