#include <avr/io.h>
#define F_CPU 1000000UL
#include <util/delay.h>

int main(void) {
    int n;
    DDRB |= ( 1 << 4 );
        PORTB &= ~(1 << 4 );
        _delay_ms(10000); 	//5.6sec
        _delay_ms(10000);
        _delay_ms(10000); 	//17sec.
        _delay_ms(10000);
        _delay_ms(10000);
        _delay_ms(10000);
        _delay_ms(10000);
        _delay_ms(10000); 	//45sec.
        PORTB |= ( 1 << 4 );
        _delay_ms(250);		//button press
	PORTB &= ~(1 << 4 );
    return 0;
}