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);
}
  }