<div style="position: relative; overflow: hidden;"><div class=content><div style="text-indent: 24pt"><span style="font-size: 12pt">第1行为一个整数n，表示城镇的个数。</span></div>
<div style="text-indent: 24pt"><span style="font-size: 12pt">接下来n行，每行两个数x，y，描述每个城镇的坐标。</span></div>
<div>&nbsp;</div></div></div></div></div></div><div class="row"><div class="column"><h4 class="ui top attached block header">输出格式</h4><div class="ui bottom attache