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A1101. [COCI-2007_2008-contest1]#1 CETVRTA

编程题 普及/提高-

题目描述

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.

输入格式

Each of the three points already chosen will be given on a separate line. All coordinates will be integers between 1 and 100
0.

输出格式

Output the coordinates of the fourth vertex of the rectangle.

输入输出样例

输入 #1
5 5 
5 7 
7 5 
输出 #1
7 7
输入 #2
30 20 
10 10 
10 20
输出 #2
30 10
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