a grid of size m x n with some squares containing holes that need to be covered. You can use two types of planks to cover these holes:\n\n1 x n plank \u2014 covers a row in one column.\nm x 1 plank \u2014 covers a column in one row.\nThe goal is to find the minimum number of planks needed to cover all holes.

a grid of size m x n with some squares containing holes that need to be covered. You can use two types of planks to cover these holes:\n\n1 x n plank \u2014 cov