const int ledPin = 4;        
const int buttonPin = 8;      
int pressCount = 0;           
bool isLedOn = false;        

void setup() {
  pinMode(ledPin, OUTPUT);       
  pinMode(buttonPin, INPUT_PULLUP); 
  Serial.begin(9600);           
}

void loop() {
  int buttonState = digitalRead(buttonPin); 
  
  if (buttonState == LOW) {  
    delay(50);  
    if (digitalRead(buttonPin) == LOW) { 
      pressCount++;  
      Serial.print("Button pressed, press count: ");
      Serial.println(pressCount);
      while(digitalRead(buttonPin) == LOW){  

        if (pressCount % 3 == 0) {  
          isLedOn = true;       
          digitalWrite(ledPin, HIGH); 
        }
        else{
          isLedOn = false;
        }
      }
    }
  }

  if (isLedOn) {
    digitalWrite(ledPin, HIGH);
  } else {
    digitalWrite(ledPin, LOW);
  }

  delay(100); 
}