https://enucai.github.io/tags/algorithm/ Recent content in Algorithm on Terminal Hugo en-us Sat, 10 Jan 2026 16:38:07 +0800 https://enucai.github.io/posts/ui-of-tree-path-neighb/ Sat, 10 Jan 2026 16:38:07 +0800 https://enucai.github.io/posts/ui-of-tree-path-neighb/ <p>This article is the author&rsquo;s National Training Team paper.</p> <h2 id="abstract">Abstract</h2> <p>This paper introduces the theory of tree neighborhoods, methods for finding the union and intersection of tree neighborhoods, and the theory and algorithms for the intersection of path neighborhoods on trees. Furthermore, it presents several applications of these methods to related problems.</p> <h2 id="introduction">Introduction</h2> <p>Tree-structured problems are crucial subjects of study in algorithmic competitions, among which tree neighborhood problems are highly common.</p> https://enucai.github.io/posts/y-fast-trie/ Mon, 08 Dec 2025 23:38:36 +0800 https://enucai.github.io/posts/y-fast-trie/ <p>This is my presentation slides for a data structures and algorithms presentation, which introduces the Y-Fast Trie algorithm.</p> <div class="pdf-embed"> <iframe src="https://enucai.github.io/downloads/y-fast-trie.pdf" width="100%" height="800" style="border:0;" loading="lazy" title="PDF document"> </iframe> </div> <p>Or open the PDF file here to view: <a href="https://enucai.github.io/downloads/y-fast-trie.pdf">Y-Fast Trie Algorithm.pdf</a>。</p> https://enucai.github.io/posts/authored-problems/ Fri, 10 Oct 2025 21:52:33 +0800 https://enucai.github.io/posts/authored-problems/ <ul> <li> <p>Codeforces Global Round 28 B. Kevin and Permutation <a href="https://codeforces.com/contest/2048/problem/B">https://codeforces.com/contest/2048/problem/B</a></p> </li> <li> <p>Codeforces Global Round 28 F. Kevin and Math Class <a href="https://codeforces.com/contest/2048/problem/F">https://codeforces.com/contest/2048/problem/F</a></p> </li> <li> <p>2025 Multi-University Training Contest 10 G. Message Spreading <a href="https://acm.hdu.edu.cn/showproblem.php?pid=8093">https://acm.hdu.edu.cn/showproblem.php?pid=8093</a></p> </li> <li> <p>2025 Multi-University Training Contest 10 L. Counting Colorful Sequence <a href="https://acm.hdu.edu.cn/showproblem.php?pid=8098">https://acm.hdu.edu.cn/showproblem.php?pid=8098</a></p> </li> <li> <p>Pan African Informatics Olympiad 2025 Day 1 D. XOR Multiset <a href="https://qoj.ac/contest/2525/problem/14517">https://qoj.ac/contest/2525/problem/14517</a></p> </li> <li> <p>Secret Source 登山计划 <a href="https://zhengruioi.com/problem/3387">https://zhengruioi.com/problem/3387</a></p> </li> </ul>