实现取款交易：检查余额→防透支→更新

def solve():
    from pyodide.http import open_url
    offices_csv = open_url(____).read()
    staff_csv = open_url(____).read()
    savings_products_csv = open_url(____).read()
    clients_csv = open_url(____).read()
    savings_accounts_csv = open_url(____).read()
    savings_account_transactions_csv = open_url(____).read()
    import sqlite3
    import pandas as pd
    from io import StringIO

    conn = sqlite3.connect(____)
    pd.read_csv(StringIO(____)).to_sql(____)

    def withdraw(____):
        if amount <= ____:
            return {'____': '____', '____': '____'}
        row = conn.execute('____', (____)).fetchone()
        if not row:
            return {'____': '____', '____': '____'}
        if row[____] < amount:
            return {'____': '____', '____': f'____'}
        new_balance = row[____] - amount
        conn.execute('____',
                     (____))
        conn.commit()
        return {'____': account_id, '____': amount, '____': new_balance, '____': '____'}

    result = withdraw(____)
    print(____)
    conn.close()