bsp; </span></span><span style="font-size: 14pt">若</span><span style="font-size: 14pt">|</span><span style="font-size: 14pt">你输出的答案</span><span style="font-size: 14pt">-</span><span style="font-size: 14pt">标准答案</span><span style="font-size: 14pt">|&lt;=1e-4</span><span style="font-size: 14pt">，则算正确。</span></div></div></div></div></div><div class="row"><div class="column"><h4 class="ui top attached block header">输入格式</h4><div class="ui bottom attached segment font-co