#include <Arduino.h>

void setup() {
  DDRC = 0xFF; 
  DDRB = 0xFF; 
}

void loop() {
  for (int i = 0; i < 8; i++) {
    PORTC |= (B00000001 << i); 
    delay(300);                
  }

  for (int i = 0; i < 8; i++) {
    PORTB |= (B00000001 << i);
    delay(300);                
                      
  }

  for (int i = 7; i >= 0; i--) {
    PORTB &= ~(B00000001 << i);
    delay(300);                 
  }

  for (int i = 7; i >= 0; i--) {
    PORTC &= ~(B00000001 << i); 
    delay(300);               
  }
}