int buttonPin = 2;        // Pin for the button
int ledPin = 13;          // Pin for the LED
int buttonState = 0;      // Variable to store the button state

void setup() {
  pinMode(ledPin, OUTPUT);    // Set LED pin as output
  pinMode(buttonPin, INPUT);  // Set button pin as input
}

void loop() {
  // Blink the LED
  digitalWrite(ledPin, HIGH);  
  delay(1000);                 
  digitalWrite(ledPin, LOW);   
  delay(500);                  

  // Read the button state
  buttonState = digitalRead(buttonPin);

  if (buttonState == HIGH) {
    digitalWrite(ledPin, HIGH);  
    delay(3000);                 
  }
}