现金流分析：现金流结构类型判断

"____""____""____"

metadata = {
    "____": "____",
    "____": "____",
    "____": "____",
    "____": "____",
    "____": ["____"],
    "____": ["____", "____", "____"],
    "____": ____
}

"____""____""____"

def solve():
    import pandas as pd
    from pyodide.http import open_url
    from io import StringIO

    BASE_URL = "____"
    df = pd.read_csv(StringIO(open_url(____).read()))
    df = df[(____) & (____)].copy()
    df = df.dropna(____)

    def classify(____):
        o = row['____']
        i = row['____']
        f = row['____']
        if o > ____ and i < ____ and f > ____:
            return '____'
        elif o > ____ and i < ____ and f < ____:
            return '____'
        elif o < ____ and i < ____ and f > ____:
            return '____'
        elif o < ____ and i > ____ and f > ____:
            return '____'
        else:
            return '____'

    df['____'] = df.apply(____)
    total = len(____)
    result = df['____'].value_counts().reset_index()
    result.columns = ['____', '____']
    result['____'] = (____).round(____)
    return result.to_string()

if __name__ == "____":
    print(solve())