void setup() {
  // Initialize pins for LEDs
  pinMode(13, OUTPUT); // LED 1
  pinMode(12, OUTPUT); // LED 2
}

void loop() {
  // Turn both LEDs ON
  digitalWrite(13, HIGH); // LED 1 ON
  digitalWrite(12, HIGH); // LED 2 ON
  delay(1000); // Wait for 1 second

  // Turn both LEDs OFF
  digitalWrite(13, LOW); // LED 1 OFF
  digitalWrite(12, LOW); // LED 2 OFF
  delay(1000); // Wait for 1 second
}