Leet Code Daily 2024-05-13 - Score After Flipping Matrix

class Solution {
public:
    int matrixScore(vector<vector<int>>& grid) {
        int n = grid.size(), m = grid[0].size();
        vector<int> vals;
        for (int i = 0; i < n; i++) {
            int val = 0;
            for (int j = 0; j < m; j++) {
                val = (val << 1) + grid[i][j];
            }
            vals.push_back(val);
            cout << val << endl;
        }
        int ans = INT_MIN, ones = ((1 << m) - 1);
        for (int mask = 0; mask <= ones; mask++) {
            int sum = 0;
            for (const auto& val : vals) {
                sum += max(val ^ mask, val ^ mask ^ ones);
            }
            ans = max(ans, sum);
        }
        return ans;
    }
};