Input: grid = [[1,2,3],[4,3,2],[1,1,1]]
Output: 8
Explanation:
We can select the cells with values 1, 3, and 4 that are colored above.
You are given a 2D matrix grid consisting of positive integers.
You have to select one or more cells from the matrix such that the following conditions are satisfied:
Your score will be the sum of the values of the selected cells.
Return the maximum score you can achieve.
Example 1:
Input: grid = [[1,2,3],[4,3,2],[1,1,1]]
Output: 8
Explanation:
We can select the cells with values 1, 3, and 4 that are colored above.
Example 2:
Input: grid = [[8,7,6],[8,3,2]]
Output: 15
Explanation:
We can select the cells with values 7 and 8 that are colored above.
Constraints:
1 <= grid.length, grid[i].length <= 101 <= grid[i][j] <= 100