// practice ground
| # | Title | Topics | Difficulty |
|---|---|---|---|
| 601 | Reservoir Balancer |
Arrays
Greedy
|
Medium |
| 602 | Timeline Event Compression |
Dynamic Programming
Sorting
|
Hard |
| 603 | Robot Battery Exchange |
BFS
Graphs
|
Medium |
| 604 | Digital Circuit Validator |
Bit Manipulation
Simulation
|
Easy |
| 605 | Lexicographic Block Builder |
Greedy
Strings
|
Medium |
| 606 | Terrain Stability Zones |
Matrix
Union Find (Disjoint Set)
|
Hard |
| 607 | Dynamic Toll Network |
Graphs
Heaps / Priority Queue
|
Hard |
| 608 | Inventory Batch Merger |
Queues
Simulation
|
Easy |
| 609 | Subtree Resource Audit |
DFS
Trees
|
Medium |
| 610 | Frequency Budget Planner |
Greedy
Hashing
|
Medium |
| 611 | Recursive Canvas Split |
Divide and Conquer
Geometry
|
Hard |
| 612 | Conveyor Belt Scheduler |
Greedy
Queues
|
Medium |
| 613 | Cipher Grid Decoder |
Backtracking
Matrix
|
Hard |
| 614 | Stack Energy Simulator |
Simulation
Stacks
|
Easy |
| 615 | Hierarchical Permission Check |
Trees
Variables
|
Medium |
| 616 | Binary Toggle Network |
Bit Manipulation
Graphs
|
Medium |
| 617 | Multi-Level Cache Optimizer |
Design
Hashing
|
Hard |
| 618 | Spiral Harvest Planner |
Matrix
Simulation
|
Medium |
| 619 | Modular Equation Explorer |
Math
Number Theory
|
Hard |
| 620 | Route Conflict Detector |
Graphs
Hashing
|
Medium |
| 621 | Binary Archive Search |
Arrays
Binary Search
|
Easy |
| 622 | Balanced Tournament Tree |
Dynamic Programming
Trees
|
Hard |
| 623 | Sliding Threshold Monitor |
Queues
Sliding Window
|
Medium |
| 624 | Expression Recovery |
Stacks
Strings
|
Hard |
| 625 | Circular Supply Rotation |
Arrays
Simulation
|
Easy |
