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

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 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

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