---
id: tree-euler
title: "Euler Tour on Tree"
author: ?
prerequisites:
-
- Silver - Depth First Search
- Gold - Static Range Queries
description: Subtree updates and queries and another way to compute lowest common ancestors.
RMQ LCA?
https://cses.fi/problemset/task/1138: path queries
https://cses.fi/problemset/task/1137: subtree queries