LeetCode company workers use key-cards to unlock office doors. Each time a worker uses their key-card, the security system saves the worker's name and the time when it was used. The system emits an alert if any worker uses the key-card three or more times in a one-hour period.
\n\nYou are given a list of strings keyName and keyTime where [keyName[i], keyTime[i]] corresponds to a person's name and the time when their key-card was used in a single day.
Access times are given in the 24-hour time format "HH:MM", such as "23:51" and "09:49".
Return a list of unique worker names who received an alert for frequent keycard use. Sort the names in ascending order alphabetically.
\n\nNotice that "10:00" - "11:00" is considered to be within a one-hour period, while "22:51" - "23:52" is not considered to be within a one-hour period.
\n
Example 1:
\n\n\nInput: keyName = ["daniel","daniel","daniel","luis","luis","luis","luis"], keyTime = ["10:00","10:40","11:00","09:00","11:00","13:00","15:00"]\nOutput: ["daniel"]\nExplanation: "daniel" used the keycard 3 times in a one-hour period ("10:00","10:40", "11:00").\n\n\nExample 2:
\n\n\nInput: keyName = ["alice","alice","alice","bob","bob","bob","bob"], keyTime = ["12:01","12:00","18:00","21:00","21:20","21:30","23:00"]\nOutput: ["bob"]\nExplanation: "bob" used the keycard 3 times in a one-hour period ("21:00","21:20", "21:30").\n\n\n\n
Constraints:
\n\n1 <= keyName.length, keyTime.length <= 105keyName.length == keyTime.lengthkeyTime[i] is in the format "HH:MM".[keyName[i], keyTime[i]] is unique.1 <= keyName[i].length <= 10keyName[i] contains only lowercase English letters.Compiled with clang 11 using the latest C++ 17 standard.
Your code is compiled with level two optimization (-O2). AddressSanitizer is also enabled to help detect out-of-bounds and use-after-free bugs.
Most standard library headers are already included automatically for your convenience.
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