順列全探索
- ABC371C Make Isomorphic (300点)
問題: https://atcoder.jp/contests/abc371/tasks/abc371_c
解説: https://9871225.hatenablog.com/entry/2025/08/23/153811
DP
- CodeQUEEN-C Attraction on Rainy Day (400点)
問題: https://atcoder.jp/contests/codequeen2024-final-N9tn8QqD
解説: https://9871225.hatenablog.com/entry/2025/12/08/013925
