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The DFS tree and observation 1 are the core of Tarjan's bridge-finding algorithm. Typical tutorials about finding bridges only mention the DFS tree in passing and start by defining weird arrays
A directed DFS tree is an explicit representation of a DFS traversal of a directed graph. When a node is visited for the first time, it is added to the tree, either as a root if it was visited in the beginning of a DFS call, or as the child of the node it got visited from.
finding the diameter is one of the most frequent ways to solve problems about trees. In this tutorial we will see how to find a diameter and some of its properties, and we will use them to solve some problems of increasing difficulty.
Codeforces Graph Theory/ Problem Solving/ Algorithm Series:This is the first video of my Codeforces Graph Series. This is an introductory tutorial that discu...
8 cze 2024 · Depth First Search is one of the main graph algorithms. Depth First Search finds the lexicographical first path in the graph from a source vertex u to each vertex. Depth First Search will also find the shortest paths in a tree (because there only exists one simple path), but on general graphs this is not the case.
The idea of a bridge tree is to shrink the maximal components without a bridge into one node, leaving only the bridges of the original graph as the edges in the bridge tree. In the above image, the bridges of the graph are marked in red.
In this blog, I want to present to you a beginner-friendly video lecture series on dynamic programming on trees/an editorial for the CSES tree algorithms section. CSES is a brilliant problemset for people wanting to get started at competitive programming and get good at it.
