Airtel SDE OA 2025 | 5G Highway Coverage & Fiber Optic Grid Expansion

Problem 1 - 5G Highway Coverage Problem Statement Airtel is upgrading a long national highway with 5G coverage. You are given an array towers where: towers[i] = [center, radius] The tower provides coverage from center - radius to center + radius Multiple towers may overlap and some towers may be completely contained within others. Return the total unique highway length covered by 5G. Constraints Constraint 1 ≤ N ≤ 100000 0 ≤ center, radius ≤ 109 Example Input Output towers ...