A company currently pays a fixed sum for the use of a particular licensed software package.   In determining if it has a good deal it decides to calculate its maximum use of the software from its license management log file.

Assume the software's licensing daemon faithfully records a checkout event when a copy of the software starts and a checkin event when the software finishes to its log file.

An example of checkout and checkin events are:

 License OUT @ 2008/10/03_23:51:05 for job 4974
 ...
 License IN  @ 2008/10/04_00:18:22 for job 4974



Task

Save the 10,000 line log file from    here   into a local file, then write a program to scan the file extracting both the maximum licenses that were out at any time, and the time(s) at which this occurs.

Mirror of log file available as a zip here (offsite mirror).




 
divert(-1)
define(`current',0)
define(`max',0)
define(`OUT',`define(`current',incr(current))`'ifelse(eval(current>max),1,
   `define(`max',current)`'divert(-1)`'undivert(1)`'divert(1)',
   `ifelse(current,max,`divert(1)undivert(1)')')')
define(`IN',`define(`current',decr(current))')
define(`for',`divert(-1)')
include(mlijobs.txt))
divert
max
undivert(1)
 