加载作业数据并统计提交率

def solve():
    from pyodide.http import open_url
    from io import StringIO
    import pandas as pd
    csv_data = open_url(____).read()
    df = pd.read_csv(StringIO(____))
    total = len(____)
    submitted = len(____)
    rate = submitted / total * ____
    print(____)