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g2101_2200.s2132_stamping_the_grid.readme.md Maven / Gradle / Ivy

2132\. Stamping the Grid

Hard

You are given an `m x n` binary matrix `grid` where each cell is either `0` (empty) or `1` (occupied).

You are then given stamps of size `stampHeight x stampWidth`. We want to fit the stamps such that they follow the given **restrictions** and **requirements**:

1.  Cover all the **empty** cells.
2.  Do not cover any of the **occupied** cells.
3.  We can put as **many** stamps as we want.
4.  Stamps can **overlap** with each other.
5.  Stamps are not allowed to be **rotated**.
6.  Stamps must stay completely **inside** the grid.

Return `true` _if it is possible to fit the stamps while following the given restrictions and requirements. Otherwise, return_ `false`.

**Example 1:**

![](https://assets.leetcode.com/uploads/2021/11/03/ex1.png)

**Input:** grid = [[1,0,0,0],[1,0,0,0],[1,0,0,0],[1,0,0,0],[1,0,0,0]], stampHeight = 4, stampWidth = 3

**Output:** true

**Explanation:** We have two overlapping stamps (labeled 1 and 2 in the image) that are able to cover all the empty cells.

**Example 2:**

![](https://assets.leetcode.com/uploads/2021/11/03/ex2.png)

**Input:** grid = [[1,0,0,0],[0,1,0,0],[0,0,1,0],[0,0,0,1]], stampHeight = 2, stampWidth = 2

**Output:** false

**Explanation:** There is no way to fit the stamps onto all the empty cells without the stamps going outside the grid.

**Constraints:**

*   `m == grid.length`
*   `n == grid[r].length`
*   1 <= m, n <= 105
*   1 <= m * n <= 2 * 105
*   `grid[r][c]` is either `0` or `1`.
*   1 <= stampHeight, stampWidth <= 105