暮冥:
博客地址：https://www.cnblogs.com/1625--H/
暮冥:
博客地址：https://www.cnblogs.com/1625--H/
SP10707 COT2 - Count on a tree II (树上莫队)
CF - 392 C. Yet Another Number Sequence （矩阵快速幂）
CF 1244 C - The Football Season
CF Hello2020 D. New Year and Conference
CF Hello 2020 E.New Year and Castle Construction
CF-1291 D - Irreducible Anagrams