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

int buttonState=0;
void setup(){
  pinMode(red,OUTPUT);
  pinMode(green, OUTPUT);
  pinMode(button,INPUT);
}
void loop(){
  buttonState=digitalRead(button);
  if(buttonState==1)
  {
    digitalWrite(red, HIGH);
    digitalWrite(green, HIGH);
  }
  else if(buttonState==0)
  {
    digitalWrite(red, LOW);
    digitalWrite(green, LOW);
  }
}