#include <avr/io.h>
#include <avr/interrupt.h>
int state1;
int state2;

SIGNAL(SIG_INTERRUPT0){
        if ((PINA >> PA0) & 1)!=state1) {
                PORTD ^=(1<<PD6);
                state1 ^=1;
        }
        if ((PINA >> PA1) & 1)!=state1) {
                PORTD ^=(1<<PD5);
                state1 ^=1;
        }
}
int main(void){
        state1 = 1;
        state2=1;
        GICR=0xC0;
        MCUCR=0x01;
        sei();
        DDRD |= (1 << PD6);
        DDRD |= (1 << PD5);
        PORTD |= (1 << PD2);
        PORTA |= (1 << PA0);
        PORTA |= (1 << PA1);

        while (1) {
        }
        return 0;
}