ICPC 2023 澳门区域赛（Macau Regional）（Codeforces Gym 104891）部分题目的题解：
A. (-1,1)-Sumplete
D. Graph of Maximum Degree 3
F. Land Trade

2024 ICPC Asia Pacific Championship（Codeforces Contest 1938）部分题目的题解：
B. Attraction Score
C. Bit Counting Sequence
E. Duplicates
F. Forming Groups