tyle="line-height: 150%">行，每行三个数，</span><span style="line-height: 150%">(pi,qi)</span><span style="line-height: 150%">表示好友的坐标，</span><span style="line-height: 150%">si</span><span style="line-height: 150%">如题中描述意义。</span></span></div>
<div style="text-indent: 6pt; line-height: 150%"><span style="font-size: medium">&nbsp;</span></div></div></div></div></div></div><div class="row"><div class="column"><h4 class="ui top attached block header">输出格式</h4><di