n style="line-height: 150%">个资源点。</span></span></div>
<div style="line-height: 150%"><span style="font-size: medium"><span style="line-height: 150%">&nbsp;&nbsp;&nbsp;&nbsp; </span><span style="line-height: 150%">接下来有</span><span style="line-height: 150%">N</span><span style="line-height: 150%">行，每行包含两个整数</span><span style="line-height: 150%"> x,y</span><span style="line-height: 150%">，表示这个资源点的坐标</span></span></div>
<div style="line-height: 150%"