#include <stdlib.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <linux/kd.h>
#include <unistd.h>
#include <stdio.h>

#define WAITFACTOR 140

int main()
{
	nice(-1);

	unsigned int length;

	scanf("%i",&length);
	printf("Sample length: %i\n", length);
	
	int i = 0;
	int s;
	int sample[length];
	while((scanf("%i",&s) != EOF) && (i < length))
	{
		sample[i++] = s;
	}

	int *p;

	int fd = open("/dev/tty0", O_RDONLY);

	int value, arg, c;
	for(p = &sample[0]; p < &sample[0] + length; p ++)
	{
			value = *p;
			c = 0;
			arg = (value << 16) + 3000;
			ioctl(fd,KDMKTONE,arg);
			while(c++ < (WAITFACTOR * value)) {}
			arg = ((100 - value) << 16) + 0;
			ioctl(fd,KDMKTONE,arg);
			while(c++ < (WAITFACTOR * 100)) {}
	}
	return 0;
}