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 ~1\,000~.
Output the coordinates of the fourth vertex of the rectangle.
Sample Input 1
5 5 5 7 7 5
Sample Output 1
Sample Input 2
30 20 10 10 10 20
Sample Output 2