You’ve now seen advanced structures and techniques.

## What you learned
- performance thinking
- trees, heaps, graphs
- caching and DP
- advanced patterns

## Big decision idea
```mermaid
flowchart TD
  A[Problem] --> B{Need speed?}
  B --> C[Heap / Cache]
  B --> D{Need ranges?}
  D --> E[Segment / Fenwick]
  D --> F{Need relations?}
  F --> G[Graph / DSU]
```

## Final advice
- start simple
- only use advanced tools when needed
- clarity beats cleverness

## Congratulations
You now understand **advanced data structures** and how to think like a problem solver.

Bring everything together: how to think about advanced data structures, trade-offs, and when to actually use them in real projects.

Advanced Structures Wrap-Up

Master fundamental data structures and their implementations.

Advanced Structures Wrap-Up

What you learned

Big decision idea

Final advice

Congratulations

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