v>
    </div>
    <div class='section' id='section-0'>
        <div class='docs doc-strings'>
            <div class='section-link'>
                <a href='#section-0'>#</a>
            </div>
            <h1>公共事业</h1>

        </div>
        <div class='code'>
            <div class="highlight"><pre><span class="lineno">10</span><span></span><span class="kn">import</span> <span class="nn">copy</span>
<span class="lineno">11</span>
<span class="lineno">12</span><span class="kn">from</span> <span c