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CSP September 2020
第 20 次 CCF 计算机软件能力认证 检测点查询 问题重述 给定一个点集 $S \subset \mathbb{R}^2$,再给定一个点 $p \in \mathbb{R}^2$, 求 $S$ 中到
Xi Ruoyao
Last updated on Oct 5, 2020
5 min read
CCPC 2020 Online
CCPC 2020 Online Graph Theory Class 问题重述 一个完全图,点的编号是 $1$ 到 $n$,$u$ 和 $v$ 之间的边权是 $lcm(u, v)$,求其 MST。 题解 不会啊,这题真的能做吗,为什么过了几百
Xi Ruoyao
Last updated on Sep 24, 2020
3 min read
Different Ways to Initialize an Array, and their Performance
Discuss minor performance issues introduced by array initialization in competitive programming.
Xi Ruoyao
Last updated on Jul 22, 2020
8 min read
A Guide to Undefined Behavior in C and C++
This is a Chinese translation of the
original article
on John Regehr’s blog.
John Regehr
Last updated on Jan 12, 2020
23 min read
Time complexity problem
Another stupid problem can lead to some thoughts.
Xi Ruoyao
Last updated on Sep 13, 2019
4 min read
Problem F, CF Round #536 (Div. 2)
Solution of
Lunar New Year and a Recursive Sequence
Xi Ruoyao
Last updated on Jun 28, 2019
2 min read
Analysis of Undefined Behaviors from an Examination
Even a stupid problem can lead to some thoughts.
Xi Ruoyao
Last updated on Oct 5, 2020
10 min read
What Every C Programmer Should Know About Undefined Behavior #3/3
This is a Chinese translation of the
original article
on LLVM blog.
Chris Lattner
Last updated on Jul 10, 2020
10 min read
What Every C Programmer Should Know About Undefined Behavior #2/3
This is a Chinese translation of the
original article
on LLVM blog.
Chris Lattner
Last updated on Jun 28, 2019
8 min read
What Every C Programmer Should Know About Undefined Behavior #1/3
This is a Chinese translation of the
original article
on LLVM blog.
Chris Lattner
Last updated on Jun 28, 2019
7 min read
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