Cirno is a fairy living in the Misty Lake.
One day, Cirno discovered two special stones in the lake. As a genius, Cirno guessed that a location determined by these two stones must be where a treasure is buried!
How can two stones determine a coordinate? Cirno thought that the two stones and the indicated treasure location must form a special triangle—a right-angled triangle!
As a "baka" (fool), Cirno naturally cannot figure out how to form a right-angled triangle. The poor thing doesn't even know that there could be infinitely many such positions. However, to satisfy her desire for adventure, you still need to find her a coordinate such that the three points can form a right-angled triangle.
The Misty Lake can be viewed as a huge grid, where the coordinates of all points are integers, and the range of $x, y$ coordinates is $[-10^9, 10^9]$. Cirno found two strange stones in it, with coordinates denoted as $A$ and $B$. You need to find a third point $C$ on the grid such that $A, B, C$ can form a right-angled triangle. Since $C$ is on the Misty Lake, the coordinates of $C$ must also be integers, and the coordinates of $C$ must also satisfy the constraint $[-10^9, 10^9]$.
Input
A single line containing four integers $x_1, y_1, x_2, y_2$ ($0 \le |x_1|, |y_1|, |x_2|, |y_2| \le 10^9$), representing the coordinates of $A$ and $B$. It is guaranteed that $A$ and $B$ do not coincide.
Output
A single line containing two integers $x_3, y_3$, representing the coordinates of the point $C$ you found. You need to ensure $0 \le |x_3|, |y_3| \le 10^9$. It is guaranteed that a solution always exists; if there are multiple solutions, you may output any one of them.
Examples
Input 1
0 0 4 2
Output 1
0 2
Note
As shown in the figure, the coordinates of $A$ and $B$ are $(0, 0)$ and $(4, 2)$ respectively. The figure shows three possible points $C$:
- $C_1$ has coordinates $(1, 3)$, forming an orange triangle, $\angle AC_1B = 90^\circ$.
- $C_2$ has coordinates $(-1, 2)$, forming a yellow triangle, $\angle C_2AB = 90^\circ$.
- $C_3$ has coordinates $(5, 0)$, forming a red triangle, $\angle ABC_3 = 90^\circ$.