【LeetCode】840. Magic Squares In Grid 解题报告（Python）
标签（空格分隔）： LeetCode 题目地址： https://leetcode.com/problems/magic-squares-in-grid/description/ A 3 x 3 magic square is a 3 x 3 grid filled with distinct numbers from 1 to 9 such that each row, column, and both diagonals all have the same sum. Given an grid of integers, how many 3 x 3 “magic square” subgrids are there? (Each subgrid is contiguous). Example 1: Input: [[4,3,8,4], [9,5,1,9], [2,7,6,2]] Output: 1 Explanation: The following subgrid is a 3 x 3 magic square: 438 951 276 while this one is not: 384 519 762 In total, there is only one magic square inside the given grid. Note: 1 <= grid.length