gistfile1.cpp

#include <sys/time.h>
#include <cmath>
#include <cstdio>

typedef unsigned long long time_ms_t;
time_ms_t get_time()
{
	static timeval tv;
	gettimeofday(&tv, 0);
	return tv.tv_sec * 1000 + tv.tv_usec * 0.001;
}

time_ms_t start_time;
bool time_up(time_ms_t time_limit)
{
	return get_time() - start_time > time_limit;
}

int main()
{
	int n, m;
	scanf("%d%d", &n, &m);
	time_ms_t start_time = get_time(),
			  time_limit = pow(n * m, 1/ 6.0) * 1000 * 0.9;
	while (get_time() - start_time < time_limit);
	return 0;
}