��两个数，表示i, j之间存在一条边.(结点从0开始编号)</p>
<p></p></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 attached segment font-content"><div style="position: relative; overflow: hidden;"><div class=content><p>欧拉回路上最小的所需转弯的弧度和 <br />
</p></div></div></div></div></div><div class="row"><div class="column"><h4 class="ui top attached block header">样例</h