At Online Dissertation Help, we provide specialized help on dissertation topics in geography, ensuring that students discover dynamic and relevant areas of studies. From urbanization and environmental sustainability to climate trade and geopolitics, we guide students in growing revolutionary and impactful dissertation topics in geography. Our expert crew gives complete assist during the entire procedure, from refining the research question to generating a properly-organized and deeply researched dissertation. We are devoted to supporting students craft dissertations that make significant contributions to the field of geography while upholding academic rigor and excellence at each step of their adventure.

O(m^2 * n), only a bit better than brute force O(m^2 * n^2), there's probably a quadratic time algo but i cant be bothered to find it since O(m^2 * n) already pass all the test

int kMarsh(int m, int n, const vector<string>& grid) {
    int longest = 0;
    vector<vector<int>> verticalx(m+1, vector<int>(n+1));
    for (int i=1; i <= m; i++) {
        for (int j=1; j <= n; j++) verticalx[i][j] = (grid[i-1][j-1] == 'x') ? i : verticalx[i-1][j];
    }
    for (int I=2; I <= m; I++) {
        vector<int> cache(I, -2);
        for (int J=2; J <= n; J++) {
            if (grid[I-1][J-2] == 'x') continue;
            if (grid[I-1][J-1] == 'x') {
                fill(cache.begin(), cache.end(), -2);
                continue;
            }
            for (int i=1; i < I; i++) {
                if (grid[i-1][J-1] == 'x' or grid[i-1][J-2] == 'x') {
                    cache[i] = -2;
                    continue;
                }
                if (cache[i] == -1 or cache[i] == -2) cache[i] = (verticalx[I][J-1] < i) ? J-1 : -1;
                if (cache[i] > 0 and verticalx[I][J] < i) longest = max(longest, 2 * (I-i+J-cache[i]));
            }
        }
    }
    return longest;
}

int main()
{
    vector<string> grid;
    int m, n;
    string temp;
    cin >> m >> n;
    for (int i=1; i <= m; i++) {
        cin >> temp;
        grid.push_back(temp);
    }
    int longest = kMarsh(m, n, grid);
    if (longest != 0) cout << longest;
    else cout << "impossible";
}

As a student, I struggled to manage my part-time work and studies together. It became difficult for me to manage all these together while obtaining good marks in my assignments and writing my routine reports. Still, fortunately, I got to know about management accounting assignment topics. They have the best and most professional academic writers available; feel free to ask them any queries.

The automotive world is buzzing with excitement as Pontiac, a brand beloved by car enthusiasts, makes a remarkable comeback with the highly anticipated 2024 Pontiac Solstice.

In the realm of electric bikes, one name stands out as a pioneer of innovation and adventure – Haibike USA.