int red = 13;
int green = 12;
int button = 11;

int buttonState = 0;

void setup() {
  // put your setup code here, to run once:
  pinMode(red, OUTPUT);
  pinMode(green, OUTPUT);
  pinMode(button, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:

  buttonState = digitalRead(button);

  if (buttonState == 1){
    digitalWrite(red, HIGH);
    digitalWrite(green, HIGH);
  }

  else if (buttonState == 0){
    digitalWrite(red, LOW);
    digitalWrite(green, LOW);
  }
}