--- 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. --- - [CSES: Subtree Queries](https://cses.fi/problemset/task/1137) ## Tutorial - CPH 18.2 - [cp-algorithms - LCA with Sparse Table](https://cp-algorithms.com/graph/lca.html) ## Problems - [CSES: Path Queries](https://cses.fi/problemset/task/1138) - USACO - [Gold - Milk Visits](http://www.usaco.org/index.php?page=viewproblem2&cpid=970) - [Plat - Promotion Counting](http://www.usaco.org/index.php?page=viewproblem2&cpid=696) - [Plat - Snow-Cow](http://www.usaco.org/index.php?page=viewproblem2&cpid=973)