实现播放日志时间戳合法性检测

def solve():
    from pyodide.http import open_url
    from io import StringIO
    import pandas as pd
    pl_csv = open_url(____).read()
    logs = pd.read_csv(StringIO(____))
    NOW = ____ + ____ * ____
    MAX_PAST_SEC = ____ * ____
    def validate_timestamp(____):
        errors = []
        if started_at > NOW: errors.append(____)
        if ended_at > NOW + ____: errors.append(____)
        if NOW - started_at > MAX_PAST_SEC: errors.append('____'+str((____)//____)+'____')
        if ended_at < started_at: errors.append(____)
        if upload_ts < ended_at: errors.append(____)
        return errors
    invalid = []
    for _, row in logs.iterrows():
        errs = validate_timestamp(int(____), int(____), int(____))
        if errs:
            invalid.append(____)
    print(____)
    print("____"+str(len(____))+"____")
    print("____"+str(len(____)))
    for ex in invalid[:____]:
        print("____"+ex['____']+"____"+str(____))