统计历年核销金额与当年回收金额对比

def solve():
    from pyodide.http import open_url
    clients_csv = open_url(____).read()
    loans_csv = open_url(____).read()
    loan_classifications_csv = open_url(____).read()
    write_offs_csv = open_url(____).read()
    recovery_records_csv = open_url(____).read()
    import sqlite3, pandas as pd
    from io import StringIO
    conn = sqlite3.connect(____)
    pd.read_csv(StringIO(____)).to_sql(____)
    pd.read_csv(StringIO(____)).to_sql(____)
    wo = pd.read_sql_query(____)
    rc = pd.read_sql_query(____)
    merged = wo.merge(____).fillna(____)
    merged['____'] = (____).round(____)
    merged.columns = ['____','____','____','____']
    print(merged.to_string(____))
    conn.close()