ICPC 2024 南京区域赛（Nanjing Regional）部分题目的题解：
A. Hey, Have You Seen My Kangaroo?
B. Birthday Gift
C. Topology
E. Left Shifting 3
F. Subway
G. Binary Tree
I. Bingo
K. Strips
M. Ordainer of Inexorable Judgment

ICPC 2022 南京区域赛（Nanjing Regional）部分题目的题解：
A. 停停，昨日请不要再重现（Stop, Yesterday Please No More）
B. 索道（Ropeway）
D. 聊天程序（Chat Program）
I. 完美回文（Perfect Palindrome）
J. 完美匹配（Perfect Matching）
K. 堆里的 NaN（NaN in a Heap）
M. 清空水箱（Drain the Water Tank）

CCPC 2024 哈尔滨区域赛（Harbin Regional）部分题目的题解：
A. Build a Computer
B. Concave Hull
D. A Simple String Problem
E. Marble Race
G. Welcome to Join the Online Meeting!
I. A Brand New Geometric Problem
J. New Energy Vehicle
K. Farm Management
L. A Game On Tree

The 3rd Universal Cup. Stage 1: St. Petersburg（暨 2024 LIX SPbSU Championship）部分题目的题解：
A. Element-Wise Comparison
C. Cherry Picking
D. Dwarfs' Bedtime
E. Fake Coin and Lying Scales
G. Unusual Case
J. First Billion
K. Tasks and Bugs
N. (Un)labeled graphs

ICPC 2019 World Finals（Codeforces Gym 102511）部分题目的题解：
A. Azulejos
B. Beautiful Bridges
D. Circular DNA
E. Dead-End Detector
G. First of Her Name
H. Hobsons' trains
J. Miniature Golf

ICPC 2021 World Finals（Codeforces Gym 104288）部分题目的题解：
B. Dungeon Crawler
C. Fair Division
F. Islands from the Sky
H. Prehistoric Programs
I. Spider Walk
J. Splitstream
L. Where Am I?

ICPC 2023 World Finals（Codeforces Gym 105255）部分题目的题解：
A. Riddle of the Sphinx
C. Three Kinds of Dice
D. Carl's Vacation
F. Tilting Tiles
H. Jet Lag

ICPC 2018 World Finals（Codeforces Gym 102482）部分题目的题解：
A. Catch the Plane
B. Comma Sprinkler
E. Getting a Jump on Crime
H. Single Cut of Failure
I. Triangles

Tsinghua Bootcamp 2024 预选赛部分题目的题解：
A. A + B
C. Historic Memories
E. Secure Prison
G. Crazy Arrangements
I. Delivery Robot
J. Pizza
K. String Mutation
L. Magical Clock

CCPC 2023 Final 部分题目的题解：
A. Add One 2
C. Colorful Graph 2
D. Min or Max
G. China Convex Polygon Contest
H. The Game
J. DFS Order 5
K. Sticks