# 0861. Score After Flipping Matrix

https://leetcode.com/problems/score-after-flipping-matrix

## Description

You are given an `m x n` binary matrix `grid`.

A **move** consists of choosing any row or column and toggling each value in that row or column (i.e., changing all `0`'s to `1`'s, and all `1`'s to `0`'s).

Every row of the matrix is interpreted as a binary number, and the **score** of the matrix is the sum of these numbers.

Return _the highest possible **score** after making any number of **moves** (including zero moves)_.

**Example 1:**

![](https://assets.leetcode.com/uploads/2021/07/23/lc-toogle1.jpg)

```
**Input:** grid = [[0,0,1,1],[1,0,1,0],[1,1,0,0]]
**Output:** 39
**Explanation:** 0b1111 + 0b1001 + 0b1111 = 15 + 9 + 15 = 39
```

**Example 2:**

```
**Input:** grid = [[0]]
**Output:** 1
```

**Constraints:**

* `m == grid.length`
* `n == grid[i].length`
* `1 <= m, n <= 20`
* `grid[i][j]` is either `0` or `1`.

## ac

```java
```
