#include <LiquidCrystal.h>
LiquidCrystal lcd(13, 12, 5, 4, 3, 2);

void setup() {
  lcd.begin(16, 2);
  lcd.clear();
}

void loop() {
  for (int i = 0; i <= 500; i++) {
    lcd.setCursor(0, 0);
    lcd.print("Count Up: ");
    lcd.setCursor(10, 0);
    lcd.print(i);
    lcd.print("   "); // Clear extra characters
    delay(20);
  }
  
  for (int i = 500; i >= 0; i--) {
    lcd.setCursor(0, 1);
    lcd.print("Count Down: ");
    lcd.setCursor(13, 1);
    lcd.print(i);
    lcd.print("   "); // Clear extra characters
    delay(20);
  }
}