const int ledPin1 = 2;
const int ledPin2 = 3;
const int ledPin3 = 4;
const int buzzerPin = 5;
const int switchPin1 = 6;
const int switchPin2 = 7;
const int switchPin3 = 8;

void playSound(int frequency, int duration)
{
  tone(buzzerPin, frequency);
  delay(duration);
  noTone(buzzerPin);
}

void setup() 
{
  // put your setup code here, to run once:
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(buzzerPin, OUTPUT);
  pinMode(switchPin1, INPUT_PULLUP);
  pinMode(switchPin2, INPUT_PULLUP);
}

void loop() 
{
  // put your main code here, to run repeatedly:
  if(digitalRead(switchPin1) == LOW) 
  {
    digitalWrite(ledPin1, HIGH);
    delay(500);
    digitalWrite(ledPin1, LOW);
    delay(500);
    digitalWrite(ledPin1, HIGH);
    delay(500);
    digitalWrite(ledPin1, LOW);
  }

  if()
}