#include <avr/io.h>		

int main ()
{
	DDRB = 0xFF ;		
	DDRC = 0xFF ;		
	DDRD = 0xFF ;		

	PORTB = 0x35 & 0x0F;
	PORTC = 0x04 | 0x68;
	PORTD = 0x54 ^ 0x78;
	PORTB = ~0x55;		

	while(1);
	return 0;
}