#define LED_PIN 13
#define BUTTON_PIN 8
#define LED1_PIN 3
#define BUTTON1_PIN 2

byte lastButtonState = LOW;
byte ledState = LOW;
byte lastButton1State = LOW;
byte led1State = LOW;

unsigned long debounceDuration = 100; // millis
unsigned long lastTimeButtonStateChanged = 0;
unsigned long debounce1Duration = 100; // millis
unsigned long lastTimeButton1StateChanged = 0;

void setup() {
  pinMode(LED_PIN, OUTPUT);
  pinMode(BUTTON_PIN, INPUT);
  pinMode(LED1_PIN, OUTPUT);
  pinMode(BUTTON1_PIN, INPUT);
}

void loop() {
  if (millis() - lastTimeButtonStateChanged > debounceDuration) {
    byte buttonState = digitalRead(BUTTON_PIN);
    if (buttonState != lastButtonState) {
      lastTimeButtonStateChanged = millis();
      lastButtonState = buttonState;
      if (buttonState == LOW) {
        ledState = (ledState == HIGH) ? LOW: HIGH;
        digitalWrite(LED_PIN, ledState);
      }
    }
  }
  if (millis() - lastTimeButton1StateChanged > debounce1Duration) {
   byte button1State = digitalRead(BUTTON1_PIN);
    if (button1State != lastButton1State) {
      lastTimeButton1StateChanged = millis();
      lastButton1State = button1State;
      if (button1State == LOW) {
        led1State = (led1State == HIGH) ? LOW: HIGH;
        digitalWrite(LED1_PIN, led1State);
      }
    }
  }
}