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Quick Summary

Simulate a robot moving strictly right across a grid while handling obstacles and instant position jumps.
Track visited cells to detect infinite loops caused by teleport chains.
Return step count on success, -1 if blocked, or -2 if a cycle occurs.

What This Tests

Array and grid traversal simulation
Constant-time lookups using hash maps
Cycle detection via state tracking
Boundary and edge case management

Common Patterns

Hashing

Graph Traversal

Test Cases

Input

Output

Expected