Problem - Range Module

Design a data structure to track ranges.

Implement:

• addRange(left, right): Add the half-open interval $[\text{left}, \text{right})$
• queryRange(left, right): Return true if every number in $[\text{left}, \text{right})$ is tracked
• removeRange(left, right): Stop tracking numbers in $[\text{left}, \text{right})$

This requires dynamic interval operations, not just queries on a static set. Constraints: up to $10^4$ operations.