Problem D
Cetvrta

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.

Input

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

Output

Output the coordinates of the fourth vertex of the rectangle.

5 5
5 7
7 5

7 7

30 20
10 10
10 20

30 10