https://111qqz.com/en/tags/%E8%99%9A%E7%82%B9/Recent content in 虚点 on 111qqz's blogHugo -- gohugo.ioen© 2015-2026 111qqzSat, 21 May 2016 04:58:22 +0000https://111qqz.com/en/post/acm-icpc/2016/2016-05-21-hdu-2874/Sat, 21 May 2016 04:58:22 +0000https://111qqz.com/en/post/acm-icpc/2016/2016-05-21-hdu-2874/<p><a href="http://acm.hdu.edu.cn/showproblem.php?pid=2874" target="_blank" rel="noreferrer">hdu2874题目链接</a></p> <p>题意：给一个森林，问两点的最短距离，或者输出两点不联通。</p> <p>思路：<strong>最最重要的一点是:添加虚点！</strong></p>