【科技】基于值域预处理的快速离散对数
【技巧】Nephren Tree
【算法】Min_25 筛
【科技】区间线性基
【算法】删边最短路
做题笔记 - Sept. 2025
做题笔记 - Oct. 2025
做题笔记 - Nov. 2025
做题笔记 - Dec. 2025
做题笔记 - Jan. 2026
做题笔记 - Feb. 2026
IOI 2026 国家集训队作业整理
USACO 2025 Open, Gold
集训队互测 2025
CTT 2025 补题小记
4th UCUP 比赛记录
O M A Z E 杂赛整理
[Ynoi2000] Range Sort Prefix Color Number
[Ynoi2000] Tree Move One Step To Node Range Query
[Ynoi2001] 冷たい部屋、一人
[Ynoi2004] Range Pair Minimum Tree Distance Query
[Ynoi2008] Range Pair LCA Equal x Query
[Ynoi2011] 成都七中
[Ynoi2011] WBLT
[Ynoi2016] 镜中的昆虫
[Ynoi2016] 谁的梦
[Ynoi2016] 这是我自己的发明
[Ynoi2017] 由乃的 OJ
[Ynoi2018] いろとりどりのセカイ
[Ynoi2018] そらのおとしもの
[Ynoi2019 模拟赛] Yuno loves sqrt technology I
[Ynoi2019 模拟赛] Yuno loves sqrt technology II
[Ynoi2019 模拟赛] Yuno loves sqrt technology III
[Ynoi2079] Range 2 Pow Sum Pop Count
[ABC306] Ex - Balance Scale
[ABC365] F - Takahashi on Grid
[ARC061] F - Card Game for Three
[ARC104] C - Fair Elevator
[ARC104] E - Random LIS
[ARC104] F - Visibility Sequence
[ARC105] E - Keep Graph Disconnected
[ARC105] F - Lights Out on Connected Graph
[ARC106] E - Medals
[ARC106] F - Figures
[(MUJIN)PC2016] D - Parenthesis Sequence
[清华集训 2017] 某位歌姬的故事
GDKOI 2025 Day2 D
\(\mu\) 和 \(\sigma_0\) 的优美对称
ARC203 - C「WHY MY COMBINATION SO BAD???」