int led1=9;
  int led2=10;
  int led3=11;
  int dugme = 12;
 
void setup()
{
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
}

void loop()
{
  if (digitalRead(dugme)==HIGH)
  {
    digitalWrite(led1,HIGH);
    digitalWrite(led2,LOW);
    digitalWrite(led3,HIGH);
    
  }
  else 
  {
    digitalWrite(led1,LOW);
    digitalWrite(led2,HIGH);
    digitalWrite(led3,LOW);
  }
}