sub></span><span style="font-size: 14pt">表示该航线所需油量。</span></div>
<div><span style="font-size: 14pt">&nbsp;&nbsp; </span><span style="font-size: 14pt">最后</span><span style="font-size: 14pt">1</span><span style="font-size: 14pt">行，两个正整数，</span><span style="font-size: 14pt">s</span><span style="font-size: 14pt">和</span><span style="font-size: 14pt">t</span><span style="font-size: 14pt">。</span></div></div></div></div></div></div><div class="row"><div class="column">