Leetcode 2251. Number of Flowers in Full Bloom

Given a list of closed time intervals for when each flower is in full bloom and query times for people arriving, return for each person how many intervals contain that time. With up to 5·10^4 intervals and large time values, this requires an efficient approach (e.g., sorting + binary search or sweep-line) rather than naive per-query scans.

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Leetcode 2251. Number of Flowers in Full Bloom

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