[ABC246A] Four Points

Problem Statement

There is a rectangle in the $xy$-plane. Each edge of this rectangle is parallel to the $x$- or $y$-axis, and its area is not zero.

Given the coordinates of three of the four vertices of this rectangle, $(x_1, y_1)$, $(x_2, y_2)$, and $(x_3, y_3)$, find the coordinates of the other vertex.

Constraints

• $-100 \leq x_i, y_i \leq 100$
• There uniquely exists a rectangle with all of $(x_1, y_1)$, $(x_2, y_2)$, $(x_3, y_3)$ as vertices, edges parallel to the $x$- or $y$-axis, and a non-zero area.
• All values in input are integers.

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Input

Input is given from Standard Input in the following format:

$x_1$ $y_1$
$x_2$ $y_2$
$x_3$ $y_3$

Output

Print the sought coordinates $(x, y)$ separated by a space in the following format:

$x$ $y$

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Sample Input 1

-1 -1
-1 2
3 2

Sample Output 1

3 -1

The other vertex of the rectangle with vertices $(-1, -1), (-1, 2), (3, 2)$ is $(3, -1)$.

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Sample Input 2

-60 -40
-60 -80
-20 -80

Sample Output 2

-20 -40

可以用异或找到不同的那一个。

#include<cstdio>
int x1,y1,x2,y2,x3,y3;
int main()
{
	scanf("%d%d%d%d%d%d",&x1,&y1,&x2,&y2,&x3,&y3);
	printf("%d %d",x1^x2^x3,y1^y2^y3);
}