Pocket Gem OA: Log Parser - neverlandly - 博客园
time a given player spends actually connected to the network. We keep console logs of various game subsystems for each play session. Each log message has the following format: (MM/dd/yyyy-hh:mm:ss) :: [message logged] Sample log lines: (11/12/2015-02:34:56) :: START (01/02/1990-13:10:00) :: DISCONNECTED (03/13/2018-21:01:01) :: ERROR - File "close.png" not found. Log messages that pertain to network connectivity are as follows: START : Logged when the game starts up. CONNECTED : Logged when a network connection is established. DISCONNECTED : Logged when network connection is lost. SHUTDOWN : Logged when the player is quitting the game. A player's session length is the amount of time between the START and SHUTDOWN messages. A player's connected time is the amount of time they spend in a connected state. A player starts the game disconnected, becomes connected when we log a CONNECTED message, and becomes disconnected when we log a DISCONNECTED message. You can make the following assumptions: All logs will be properly formatted All dates will be valid No log message will stretch across multiple lines All log files will be ordered chronologically There will always be exactly one START and exactly one SHUTDOWN event logged Input A file containing lines of log messages. Output The connectivity percentage as a string, rounded down to an integer. Examples (01/01/2000-01:00:00) :: START (01/01/2000-01:01:00) :: CONNECTED (01/01/2000-01:21:00) :: DISCONNECTED (01/01/2000-01:50:00) :: SHUTDOWN The player spent 20 minutes out of 50 connected, 20 / 50 = 0.4, output should be "40%" (02/03/2002-14:00:00) :: START (02/03/2002-14:00:00) :: CONNECTED (02/03/2002-14:08:00) :: DISCONNECTED (02/03/2002-14:10:00) :: CONNECTED (02/03/2002-14:15:00) :: SHUTDOWN The player spent 13 minutes out of 15 connected, 13 / 15 = 0.8667, output should be "86%" More sample input can be found in the text files input_1.txt, input_2.txt, and input_3.txt
有事游戏中有Log用于记录各种状态，想知道究竟用户连接的时间是多少。状态除了START, CONNECTED, DISCONNECTED, SHUTDONW外还有ERROR啥的，但是只需要关注前四个。 输入形式： vector<string> lines (11/01/2015-04:00:00) :: START (11/01/2015-04:00:00) :: CONNECTED (11/01/2015-04:30:00) :: DISCONNECTED (11/01/2015-04:45:00) :: CONNECTED (11/01/2015-05:00:00) :: SHUTDOWN
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