Implementation of the Chtholly Tree Data Structure
The Chtholly Tree organizes consecutive array segments with identical values into nodes, stored in a sorted set. Each node represents a range [l, r] with a mutable value.
struct Segment {
int left, right;
mutable long long value;
Segment(int l = 0, int r = 0, long long v = 0) : left(l), right(r), value(v) {}
bool operator<(co ...
Posted on Thu, 01 Oct 2026 16:29:25 +0000 by ryankentp
Chtholly Tree and Color Segment Amortization
Overview
The Chtholly Tree, also known as ODT (Old Driver Tree), gained popularity through Codeforces problem 896C.
It's crucial to understand that this approach is fundamentally based on color segment amortization for random data, rather than being a strict data structure. The operations described below represent specific implementations of th ...
Posted on Fri, 24 Jul 2026 16:28:49 +0000 by Renich
Efficient Management of Randomized Interval Operations using Chtholly Tree
Introduction
The Chtholly Tree, often referred to as the Old Driver Tree (ODT), is a data structure optimized for specific scenarios involving sequence operations. It is particularly effective when problems feature range assignment operations and randomly generated data. The core principle involves decomposing a sequence into contiguous interva ...
Posted on Tue, 16 Jun 2026 17:50:38 +0000 by jevman