Problems
Distance To Special Point
Distance To Special Point
\textbf{This is an interactive problem}
On the plane the integer points with coordinates does not exceeding $10^6$ are labeled. The movement is allowed along the lines that are parallel to the coordinate axis, so the distance between two points that have coordinates $x_1, y_1$ and $x_2, y_2$ is calculated as $|x_1 - x_2| + |y_1 - y_2|$.
There is unknown special labeled point $A$. You may for one query ask the distance from the labeled point you choose to the point $A$. Your task is to guess the coordinates of $A$ for two queries.
\textbf{Interaction Protocol}
The interaction is started by your program. You may ask the queries in the format $"?~x~y"$ --- ask the distance (in definitions of the task) from the labeled point with coordinates $x, y$ to the point $A~(-10^6 \le x, y \le 10^6, x$ and $y$ are integers).
If you are ready to print the answer, use the following format: $"!~x~y"~(x$ and $y$ are the coordinates of the point $A$, then exit the program. This action is not considered as a query.
\textbf{Note}
For the correct interaction print the end-of-line after each query and after the answer and flush the output buffer with the respective functions of your programming language:
\begin{itemize}
\item cout.flush() or fflush(stdout) for C/C++;
\item stdout.flush() for Python;
\item look your language documentation for the other languages.
\end{itemize}
Input example #1
1 0
Output example #1
? 0 0 ? 1 0 ! 1 0