#define F_CPU 16000000UL
#define __AVR_ATmega328P__
#include <avr/io.h>

int main(void) {
  DDRB = 0xff;
  DDRD = 0;

  PORTD |= (1 << PORTD2) | (1 << PORTD3);

  PORTB = 0;

  while (1) {
    if (!(PIND & (1 << PIND2))) {
      PORTB |= (1 << PORTB5);
    }
    if (!(PIND & (1 << PIND3))) {
      PORTB &= ~(1 << PORTB5);
    }
  }
}