Felim has
points with integer coordinates in the
-plane that he received as a Valentine's gift, and he wants to find two distinct points
and
with integer coordinates such that the sum of the Manhattan distance between the
points and
and
is minimal.
He is unable to do so, so he wants you to find these two points and output the minimum distance.
The Manhattan distance between
and
is
.
Constraints


Input Specification
The first line contains the integer
. The next
lines each contain 2 integers,
.
Output Specification
The first and only line contains the minimum sum of the Manhattan distance from the
points to the two points you selected.
Sample Input
Copy
4
3 1
5 1
1 3
5 4
Sample Output
Copy
22
Explanation for Sample
If we choose the two points to be
and
, then the sum of distances is
. It can be proven that this is minimal.
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