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