About
Developer / ACMer
I am a backend-oriented CS student who also spends a lot of time on contest problems,
systems fundamentals and long-form note taking.
FXJ Wiki is my long-term writing space for problem editorials, backend notes, and
knowledge-base style articles.
More about me
Posts
- Mar 6, 2026 AtCoder 题解整理 1：数论、二分与表示 Placeholder→
This post is currently available in Chinese only. The English version will be added later.
- Mar 6, 2026 AtCoder 题解整理 2：DP、概率、图与数据结构 Placeholder→
This post is currently available in Chinese only. The English version will be added later.
- Mar 6, 2026 Codeforces 题解整理 1：构造、位运算与贪心 Placeholder→
This post is currently available in Chinese only. The English version will be added later.
- Mar 6, 2026 Codeforces 题解整理 2：前缀和、字符串与思维转化 Placeholder→
This post is currently available in Chinese only. The English version will be added later.
- Mar 6, 2026 Codeforces 题解整理 3：数论、博弈、组合与 EDU Placeholder→
This post is currently available in Chinese only. The English version will be added later.
- Mar 6, 2026 邀请赛与补遗：郑州、昆明、HDU 与洛谷 Placeholder→
This post is currently available in Chinese only. The English version will be added later.
- Mar 6, 2026 牛客题解整理：寒假赛、周赛与多校 Placeholder→
This post is currently available in Chinese only. The English version will be added later.
- Jun 12, 2025 Tips to improve concentration→
Mindfulness, cognitive training, and a healthy lifestyle may help sharpen your focus.
- Jun 8, 2025 Redis 不只是缓存：锁、消息队列与 HyperLogLog Placeholder→
This post is currently available in Chinese only. The English version will be added later.
- Jun 8, 2025 Redis相关知识点 Placeholder→
This post is currently available in Chinese only. The English version will be added later.
More posts
Education
Website List
Docs
Reusable docs and theme-related notes.
Notes
Knowledge-base style long-term notes.
Pages
Earlier GitHub Pages blog and archived content.
Waline
Comment system backend and pageview service.
Status
Public uptime page for availability, incidents, and recovery.
OneDrive Share
OneDrive file listing, preview, and download portal.