3142. Check if Grid Satisfies Conditions

You are given a 2D matrix grid of size m x n. You need to check if each cell grid[i][j] is:

• Equal to the cell below it, i.e. grid[i][j] == grid[i + 1][j] (if it exists).
• Different from the cell to its right, i.e. grid[i][j] != grid[i][j + 1] (if it exists).

Return true if all the cells satisfy these conditions, otherwise, return false.

class Solution {
public:
    bool satisfiesConditions(vector<vector<int>>& A) {
        for(int i = 0; i < A[0].size() - 1; i++) {
            if(A[0][i] == A[0][i+1]) return false;
        }
        for(int i = 0; i < A.size() - 1; i++) {
            if(A[i] != A[i+1]) return false;
        }
        return true;
    }
};