实现服务实例健康检查

def solve():
    from pyodide.http import open_url
    from io import StringIO
    import pandas as pd
    reg_csv = open_url(____).read()
    traffic_csv = open_url(____).read()
    reg = pd.read_csv(StringIO(____))
    traffic = pd.read_csv(StringIO(____))
    def health_score(____):
        inst_traffic = traffic[traffic['____']==instance_id]
        if inst_traffic.empty: return ____
        success_rate = (____).mean()
        avg_latency = inst_traffic['____'].mean()
        score = success_rate * ____ - avg_latency * ____
        return round(____)
    print(____)
    for _, row in reg.iterrows():
        score = health_score(____)
        status = row['____']
        print(____)