int buttonState1 = 0;
int buttonState2 = 0;
int buttonState3 = 0;


void setup() {

  // Rojo
  pinMode(13, OUTPUT);
  pinMode(0, INPUT);

  // Azul
  pinMode(12, OUTPUT);
  pinMode(2, INPUT);

  // Verde
  pinMode(14, OUTPUT);
  pinMode(15, INPUT);
}

void loop() {

  buttonState1 = digitalRead(0);
  buttonState2 = digitalRead(2);
  buttonState3 = digitalRead(15);

  if(buttonState1 == HIGH){
    digitalWrite(13, HIGH);
  } else {
    digitalWrite(13, LOW);
  }

  if(buttonState2 == HIGH){
    digitalWrite(12, HIGH);
  } else {
    digitalWrite(12, LOW);
  }

  if(buttonState3 == HIGH){
    digitalWrite(14, HIGH);
  } else {
    digitalWrite(14, LOW);
  }

}