https://ruotian.io/tags/codeforces/ Recent content in codeforces on Ruotian's I/O https://ruotian.io/apple-touch-icon.png https://ruotian.io/apple-touch-icon.png Hugo -- gohugo.io Wed, 01 Apr 2020 09:41:00 +0000 https://ruotian.io/2020/04/cf-april-fool-2020/ Wed, 01 Apr 2020 09:41:00 +0000 https://ruotian.io/2020/04/cf-april-fool-2020/ <p><a href="https://codeforces.com/contest/1331">愚人节专场</a>，打一乐。<a href="https://codeforces.com/blog/entry/75480">官方tutorial</a></p> <h3 id="a-is-it-rated3"><a href="https://codeforces.com/contest/1331/problem/A">A. Is it rated?</a></h3> <pre class="wp-block-code"><code lang="python" class="language-python">puts("no");</code></pre> <h3 id="b-limericks4"><a href="https://codeforces.com/contest/1331/problem/B">B. Limericks</a></h3> <p>看样例<code>35-&gt;57</code>, <code>57-&gt;319</code>, <code>391-&gt;1723</code>，敏锐的觉察到可能是质因数分解。</p> <pre class="wp-block-code"><code lang="cpp" class="language-cpp">for(int i=2;i&lt;=x;i++){ while(x%i==0){ printf("%d",i); x/=i; } }</code></pre> https://ruotian.io/2018/12/cf-hello/ Sat, 29 Dec 2018 21:11:37 +0800 https://ruotian.io/2018/12/cf-hello/ Codeforces可以改handle了。 今年还可以改成已有的非活跃的账号的名字。 然后随便试了几个词，发现hello这个号last visit 8 yrs ag