{"blocks": [{"key": "3dd61148", "text": "Question", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "3c0aaa45", "text": "Design an event processor for an infinite out-of-order event stream (id, timestamp, payload, checksum). Validate checksum, discard events arriving outside a 60-second window, and maintain the average payload length over the current 1-minute sliding window with overall time complexity O(n log n).", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}], "entityMap": {}}