Codeforces Round 1024 (Div. 1) 部分题目的题解：
A. Mex in the Grid
B. Quartet Swapping
C. 23 Kingdom
D. Mani and Segments
E. Kia Bakes a Cake

Tsinghua Bootcamp 2025 预选赛部分题目的题解：

CCPC 2024 Final 部分题目的题解：
B. Add One 3 / 加一 3
C. Iridescent Universe / 彩虹色的宇宙
E. Omniscient Artist / 全知艺术家
F. Witnessing the Miracle / 见证奇迹
G. + and × with a sugar / +, × 与糖
H. Qingyu's Little Training Center / 小青鱼的训练中心
K. Grotesque Team Reconstruction / 怪诞组队法
L. Yearning for Yonder / 对远方的向往

Codeforces Round 1008 (Div. 1) 部分题目的题解：
A. Gellyfish and Flaming Peony
B. Gellyfish and Camellia Japonica
C. Gellyfish and Eternal Violet
D. Gellyfish and Forget-Me-Not

The 2nd Universal Cup Semifinals（UCup Semifinals）部分题目的题解：
A. Records in Chichén Itzá
C. Space Station
G. CNOI Knowledge
K. Game: Battle of Menjis
M. Puzzle: Summon

ICPC 2024 杭州区域赛（Hangzhou Regional）部分题目的题解：
B. Barkeley III
E. Elevator II
F. Fuzzy Ranking
G. Gathering Mushrooms
H. Heavy-light Decomposition
I. Identify Chord
M. Make It Divisible

Codeforces Round 1008 (Div. 1) 部分题目的题解：
A. Breach of Faith
B. Finding OR Sum
C. Binary Subsequence Value Sum
D. Maximum Polygon
E. Another Folding Strip

2025 华为数据通信高校程序设计竞赛训练营 Day 3 部分题目的题解：
A. Undercover
F. Competition
I. TianHe-IIA
K. Cards

ICPC 2024 西南欧区域赛（Southwestern European Regional / SWERC 2024）部分题解：
B. Divine Gifting
C. Phryctoria
E. Building the Fort
F. Yaxchilán Maze
J. Recovering the Tablet
K. Disk Covering
L. The Charioteer

ICPC 2024 横滨区域赛（Yokohama Regional）部分题目的题解：
A. Ribbon on the Christmas Present
B. The Sparsest Number in Between
C. Omnes Viae Yokohamam Ducunt?
D. Tree Generators
E. E-Circuit Is Now on Sale!
F. The Farthest Point
G. Beyond the Former Explorer
I. Greatest of the Greatest Common Divisors