#include <fstream>
#include <stdlib>
#include <threads>

#include <unistd.h>					// sysconf
#include <sys/times.h>					// times
#include <time.h>

inline unsigned long long int Time() {
    timespec ts;
    clock_gettime(
#if defined( __linux__ )
	 CLOCK_THREAD_CPUTIME_ID,
#elif defined( __freebsd__ )
	 CLOCK_PROF,
#elif defined( __solaris__ )
	 CLOCK_HIGHRES,
#else
    #error uC++ : internal error, unsupported architecture
#endif
	 &ts );
    return 1000000000LL * ts.tv_sec + ts.tv_nsec;
} // Time
 
#ifndef N
#define N 100000000
#endif

int main() {
	const unsigned int NoOfTimes = N;
	long long int StartTime, EndTime;

	StartTime = Time();
	for ( volatile unsigned int i = 0; i < NoOfTimes; i += 1 ) {
		yield();
	}
	EndTime = Time();

	sout | ( EndTime - StartTime ) / NoOfTimes | endl;
}