cwdcwe

vector<vector<char>> pushAndFall(vector<vector<char>>& board) {
    int rows = board.size();
    int cols = board[0].size();

    // Step 1: Push boxes to the right
    for (int i = 0; i < rows; i++) {
        for (int j = cols - 1; j >= 0; j--) {
            if (board[i][j] == '#') {
                int k = j;
                while (k + 1 < cols && board[i][k + 1] == '-') {
                    swap(board[i][k], board[i][k + 1]);
                    k++;
                }
            }
        }
    }

    // Step 2: Push boxes down
    for (int j = 0; j < cols; j++) {
        for (int i = rows - 1; i >= 0; i--) {
            if (board[i][j] == '#') {
                int k = i;
                while (k + 1 < rows && board[k + 1][j] == '-') {
                    swap(board[k][j], board[k + 1][j]);
                    k++;
                }
            }
        }
    }

    return board;
}