Problem D

Mirko needs to choose four points in the plane so that they form a rectangle with sides parallel to the axes. He has already chosen three points and is confident that he hasn’t made a mistake, but is having trouble locating the last point. Help him.


Each of the three points already chosen will be given on a separate line. All coordinates will be integers between $1$ and $1000$.


Output the coordinates of the fourth vertex of the rectangle.

Sample Input 1 Sample Output 1
5 5
5 7
7 5
7 7
Sample Input 2 Sample Output 2
30 20
10 10
10 20
30 10

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