This blog features competitive-programming problems, their solutions in English, and accepted source code in high-quality C++.

Links to the original problems are provided at the bottom of each pages, if possible.

- Ear Decomposition
- Find an ear decomposition of an undirected graph.

- Expression
- Find the shortest string that matches a given regular expression and contains a given substring.

- Crimiville
- In a bipartite graph, is there a S ⊆ X s.t. |Γ(S)| < |S|? If not, maximize ∑{i∈S}w(i) − ∑{i∈Γ(S)}w(i) subject to |Γ(S)| = |S|.

- Roadside Trees (Specialized Dynamic LIS)
- Compute the longest increasing subsequence while inserting almost-smallest numbers or deleting almost-leftmost numbers.

- Optimal Point
- Find an integer point minimizing the maximum Manhattan distance to each given integer points in 3-space.

- Venn Diagram (Fit Circles)
- Fit two circles into a specified rectangle. The areas of the circles and the area of their intersection are also specified.

- Leaders (Odd simple path)
- Is there an odd-length simple path between two specified vertices in a given undirected graph?

- Hello, world!
- Print 'Hello, world!'. This is a dummy article for testing purposes.

- codingdream
- super active but almost code-only, by Yenjen Wang
- code風景區 (code scenic)
- active with a controversial C++ tutorial, by 余柏序
- 亂丟程式碼の天空
- active, by 顏睿楠
- LFsWang
- active, by LFsWang
- code倉庫
- inactive, by 陳柏叡
- 日月卦長的模板庫 日月卦長的解題紀錄
- neither active, by 黃兆源
- Coding Beans
- inactive, by 洪駿輝
- Domen's Programming World
- inactive, by domen111
- Chino's
- inactive, by Chungsheng Wu
- ??????
- broken, by Anli Ting.