Problem Statement

Call Volume Alerts Given `n`, `precedingMinutes`, `alertThreshold`, and `n` call counts, examine every trailing window of `precedingMinutes` counts. Send an alert when its average is **strictly greater** than `alertThreshold`. Output the number of alerts. Input Format First line: `n precedingMinutes alertThreshold`. Second line: `n` non-negative call counts. Output Format Print the alert count. Notes A check starts only after a full window exists. Constraints `1 <= precedingMinutes <= n <= 200000`.