#include <ezButton.h>

const int leftLED = 8; 
const int rightLED = 7; 
const int BTN = 2; 

ezButton button(BTN);

int buttonPressCount = 0;

void setup() {
  pinMode(leftLED, OUTPUT);
  pinMode(rightLED, OUTPUT);
  button.setDebounceTime(50);
}

void loop() {
  button.loop();

  if (button.isReleased()) {
    digitalWrite(leftLED, HIGH);
    buttonPressCount++;
  }
  if (buttonPressCount == 2) {
    digitalWrite(rightLED, HIGH);
    digitalWrite(leftLED, HIGH);
  }
    if (buttonPressCount == 3) {
    digitalWrite(rightLED, LOW);
    digitalWrite(leftLED, LOW);
    buttonPressCount = 0;
  }
}