You are given $N$ points on the infinite $2-D$ plane. You need to find $4$ such points among these $N$ points, such that, they form a square with positive side length and whose sides are parallel to the x and y axis.

If there are multiple choices of $4$ such points, choose those which form the square of largest side. If there are still multiple choices of $4$ such points, choose those $4$ points in which the bottom left point has a lower y co-ordinate. If there are still multiple choices of $4$ such points, choose those $4$ points in which the bottom left point has a lower x co-ordinate.

Input:

First line contains a single integer $N$, denoting the number of points on the $2-D$ plane. Each of the next $N$ lines contain $2$ space separated integers $X$ and $Y$, these denote the x and y co-ordinates of the point.

Output:

Print $2$ space separated integers, the co-ordinates of the bottom left point of the square found. If there are no squares present, print $-1$.

Constraints:

$1 \le N \le 2000$

$1 \le X, Y \le 10^9$