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Problems

Basics first, then the classics, then company-style assessments. Every problem has tests you run right here; multi-level ones unlock as you go. See the roadmap.

Interview roadmap

Weighted graphs

Dijkstra, union-find, spanning trees.

21 problems

Interview roadmap

Weighted graphs Dijkstra, union-find, spanning trees.

Dijkstra (weighted shortest paths) guide

Union-Find guide

Minimum spanning tree guide

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