Depth-first Search
Problems on depth-first search, including connected components, cycle detection, entry and exit times, bridges and articulation points, strongly connected components, topological sorting, and traversals of trees and grids.
The Graphs section of the library covers depth-first search, connected components, cycle detection, strongly connected components and topological sort. Related problem sets are under Graphs and Trees.
Problems
Timeline#10123
Medium
Delegation (Gold)#10125
Very hard
Cell Phone Network#10156
Medium
Transitive closure#10157
Medium
XOR#10162
Very hard
Knight route#10242
Medium
Bessie's Snow Cow#10294
Very hard
Moorio Kart#10351
Very hard
Family Tree#10383
Medium
Back and Forth#10395
Medium
New Barns#10415
Very hard
MooTube (Silver)#10422
Medium
Sum of nodes in a subtree#10433
Very easy
Push a Box#10519
Hard