#1 ORION206
a nemělo by to bejt nějak takhle
http://stackoverflow.com/questions/3557221/how-do-i-measure-time-in-c
http://stackoverflow.com/questions/13156031/measuring-time-in-c
http://stackoverflow.com/questions/16764276/measuring-time-in-millisecond-precision
http://stackoverflow.com/questions/2808398/easily-measure-elapsed-time