Leet Code Daily 2024-05-12 - Largest Local Values in a Matrix

class Solution {
public:
    vector<vector<int>> largestLocal(vector<vector<int>>& grid) {
        int n = grid.size(), m = grid[0].size();
        vector<vector<int>> ans;
        for (int i = 1; i + 1 < n; i++) {
            vector<int> row;
            for (int j = 1; j + 1 < m; j++) {
                int max_val = INT_MIN;
                for (int p = i - 1; p <= i + 1; p++) {
                    for (int q = j - 1; q <= j + 1; q++) {
                        max_val = max(max_val, grid[p][q]);
                    }
                }
                row.push_back(max_val);
            }
            ans.push_back(row);
        }
        return ans;
    }
};