th the x and y coordinates o feachnode,inorder.0 &lt; =&nbsp; x;y &lt; =&nbsp; 10000.The nodes<br />
have unique coordinate pairs.<br />
M lines with two space separated numbers i and j,denoting an edge between nodes i and<br />
j.The nodes are 0-indexed.</p>
<p>第一行 两个数,N , M . (3&lt;=N &lt;=10000, 代表结点的个数。N&lt;=M&lt;=2N 边的个数)<br />
接下来N行，依次组出每个结点的坐标&nbsp; 0&lt;=x,y&lt;=10000 。每个结点的坐标是唯一 的<br />
接下来M行,�