ACM Note No.18: LCA
2025-2-15
ACM Note No.18: LCA 最近公共祖先(LCA，Lowest Common Ancestor (LCA))，是经典的树上...
近况
ACM Note No.17: Fenwick Tree
2025-2-12
ACM Note No.17: Fenwick Tree 树状数组（Fenwick Tree, Binary Indexed Tree...
ACM Note No.16: Sqrt Decomposition
2025-2-2
ACM Note No.16: Sqrt Decomposition 数论分块，是一种能在O(sqrt(n))复杂度下枚举x / i的...