void setup() {
  Serial.begin(9600);
  pinMode(11, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(13, OUTPUT);
}
void loop() {
}
void serialEvent() {
  while (Serial.available()) {
    int data = Serial.parseInt();
    if (Serial.read() == char(13)) {
      if (data == 0) digitalWrite(13, LOW);
      if (data == 1) digitalWrite(13, HIGH);
      if (data == 2) digitalWrite(12, LOW);
      if (data == 3) digitalWrite(12, HIGH);
      if (data == 4) digitalWrite(11, LOW);
      if (data == 5) digitalWrite(11, HIGH);
    }
  }
}