My Self-Authored Algorithm Problems

Codeforces Global Round 28 B. Kevin and Permutation https://codeforces.com/contest/2048/problem/B

Codeforces Global Round 28 F. Kevin and Math Class https://codeforces.com/contest/2048/problem/F

2025 Multi-University Training Contest 10 G. Message Spreading https://acm.hdu.edu.cn/showproblem.php?pid=8093

2025 Multi-University Training Contest 10 L. Counting Colorful Sequence https://acm.hdu.edu.cn/showproblem.php?pid=8098

Pan African Informatics Olympiad 2025 Day 1 D. XOR Multiset https://qoj.ac/contest/2525/problem/14517

Secret Source 登山计划 https://zhengruioi.com/problem/3387