Thành phố Cuồng loạn

Problem 1: Chessboard Pattern Validation Given an n×m grid with cells marked 'B' (black) or 'W' (white), determine the minimum flips required to achieve a checkerboard pattern where adjacent cells have different colors. Two valid patterns exist starting with 'W' or 'B' at position (1,1). #include <iostream> #include <vector> #includ ...