nt-size: 14pt">起飞，降落，加油等时间都可无视。</span></div>
<div style="margin: 0cm 0cm 0pt 39.75pt; text-indent: -18pt"><span style="font-size: 14pt">4.<span style="font: 7pt 'Times New Roman'">&nbsp;&nbsp;&nbsp;&nbsp; </span></span><span style="font-size: 14pt">若无解，则输出</span><span style="font-size: 14pt">0.</span></div>
<div style="margin: 0cm 0cm 0pt 39.75pt; text-indent: -18pt"><span style="font-size: 14pt">5.<span style="font: 7pt 'Times New Roman'">&nbsp;&nbsp;&nbsp;&n