void setup() {
  // put your setup code here, to run once:
  pinMode(4, OUTPUT); //attiva il pin
  pinMode(14, INPUT);
  pinMode(12, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  int b1 = digitalRead(14);
  int b2 = digitalRead(12);
  if (b1==HIGH || b2==HIGH)
  {
    digitalWrite(4, HIGH);
  }
  else digitalWrite(4,LOW);
}