Solving a Leetcode Hard Problem, Stamping The Grid which beautifully uses 2D Prefix Sum Pattern Twice.
Solving this problem will solidify your grasp on this concept
Problem Link: leetcode.com/problems/stampin...
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00:00-04:47 Problem Description & Explanation
04:48-09:15: Brute Force Idea
09:16-10:41 Optimising stamp position check
10:42-15:13 Optimising placing stamp
15:14-17:38 Analogy of placing stamp with similar 1D problem
17:39-23:20 Code