void setup() {
  // put your setup code here, to run once:
  pinMode(5, INPUT_PULLUP);
  pinMode(6, INPUT_PULLUP);
  pinMode(7, INPUT_PULLUP);
  pinMode(13, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(2, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  if (digitalRead(5) == LOW){
    digitalWrite(11, HIGH);
    delay(500);
    digitalWrite(11, LOW);
    delay(1000);
  }

  else if (digitalRead(6) == LOW){
    digitalWrite(12, HIGH);
    delay(500);
    digitalWrite(12, LOW);
    delay(1000);
  }

  else if (digitalRead(7) == LOW){
    digitalWrite(13, HIGH);
    delay(500);
    digitalWrite(13, LOW);
    delay(1000);
  }
}