Update and Expire Timestamps in Order

You are given a series of timestamps to update information. You need to output this information in order. The third part of the requirement is to determine if each timestamp has expired. A timestamp is considered expired if it does not appear in the list of updates within a specific time range counted backward from a given current time. Write code to handle these inputs and output the non-expired timestamps in order. Input: The first line contains an integer n, the number of timestamps. The next n lines each contain a timestamp, an integer in seconds. The last line is an integer k, the expiry time in seconds. Output: Output the non-expired timestamps in order, one per line. Example: Input: 5 1609459200 1609459260 1609459320 1609459380 1609459440 180 Output: 1609459200 1609459260 1609459320 1609459380 Constraints: 1 <= n <= 10^5 1 <= k <= 86400 Example Input 5 1609459200 1609459260 1609459320 1609459380 1609459440 180