Python C++解魔方陣Leetcode 840 Magic Squares In Grid

Python C++解魔方陣Leetcode 840  Magic Squares In Grid.

影片一開始就是展示如何解一個3x3的魔方陣，5總是在中心

In the beginning of film is to show how to solve a 3x3 magic square, 5 is always in the center.

[codes on Leetcode]https://leetcode.com/problems/magic-squares-in-grid/solutions/5609811/magic-square-has-5-in-middle-beats-100/

[Leetcode程式]https://www.youtube.com/watch?v=dybiq3pg-Os&list=PLYRlUBnWnd5IdDHk2BjqXwesydU17z_xk