ICPC 2024 香港区域赛（Hong Kong Regional）部分题目的题解：
B. Defeat the Enemies
C. The Story of Emperor Bie
F. Money Game 2
G. Yelkrab
K. LRString
L. Flipping Paths

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?