const int LED_PIN = 4;
const int BUTTON_PIN = 5;
int set = 0;
bool pressed = false;

void setup() {
  // put your setup code here, to run once:
  pinMode(LED_PIN, OUTPUT);
  pinMode(BUTTON_PIN, INPUT);
  Serial.begin(115200);
  Serial.println("\n\nHello World!!!");
}

void loop() {
  // put your main code here, to run repeatedly:
  if(digitalRead(BUTTON_PIN) == HIGH){
    pressed = true;
  }
  if(pressed){
    if(set%5 == 0){
      digitalWrite(LED_PIN, HIGH);
      delay(125);
      digitalWrite(LED_PIN, LOW);
      delay(125);
      digitalWrite(LED_PIN, HIGH);
      delay(125);
    }
    else if(set%5 == 1){
      digitalWrite(LED_PIN, HIGH);
      delay(125);
      digitalWrite(LED_PIN, LOW);
      delay(125);
      digitalWrite(LED_PIN, HIGH);
      delay(125);
      digitalWrite(LED_PIN, LOW);
      delay(125);
      digitalWrite(LED_PIN, HIGH);
      delay(125);
    }
    else if(set%5 == 2 || set%5 == 3){
      digitalWrite(LED_PIN, HIGH);
      delay(125);
      digitalWrite(LED_PIN, LOW);
      delay(125);
      digitalWrite(LED_PIN, HIGH);
      delay(125);
    }
    else{
      digitalWrite(LED_PIN, HIGH);
      delay(125);
    }
    digitalWrite(LED_PIN, LOW);
    set++;
    pressed = false;
  }

}