#define sw1 14
#define sw2 13
#define sw3 27
#define sw4 26
#define led1 25
#define led2 33
#define led3 32
bool led1State = HIGH;
bool led2State = HIGH;
bool led3State = HIGH;

int swState;
int lastswState = HIGH;
int swState2;
int lastswState2 = HIGH;
int swState3;
int lastswState3 = HIGH;
int swState4;
int lastswState4 = HIGH;

unsigned long lastDebounceTime = 0;
unsigned long debounceDelay = 50;

void setup() {
  Serial.begin(115200);
  pinMode(sw1, INPUT);
  pinMode(sw2, INPUT);
  pinMode(sw3, INPUT);
  pinMode(sw4, INPUT);
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
}

void loop() {
  int reading = digitalRead(sw1);

  if (reading != lastswState) {
    lastDebounceTime = millis();
  }

  if ((millis() - lastDebounceTime) > debounceDelay) {
    if (reading != swState) {
      swState = reading;
    if (swState == LOW) {
        digitalWrite(led1, HIGH);
      }
    }
  }
  lastswState = reading;
  
  int reading2 = digitalRead(sw2);

  if (reading2 != lastswState2) {
    lastDebounceTime = millis();
  }

  if ((millis() - lastDebounceTime) > debounceDelay) {
    if (reading2 != swState2) {
      swState2 = reading2;
    if (swState2 == LOW) {
        digitalWrite(led2, HIGH);
      }
    }
  }
  lastswState2 = reading2;

  int reading3 = digitalRead(sw3);

  if (reading3 != lastswState3) {
    lastDebounceTime = millis();
  }

  if ((millis() - lastDebounceTime) > debounceDelay) {
    if (reading3 != swState3) {
      swState3 = reading3;
    if (swState3 == LOW) {
        digitalWrite(led3, HIGH);
      }
    }
  }
  lastswState3 = reading3;

  int reading4 = digitalRead(sw4);

  if (reading4 != lastswState4) {
    lastDebounceTime = millis();
  }

  if ((millis() - lastDebounceTime) > debounceDelay) {
    if (reading4 != swState4) {
      swState4 = reading4;
    if (swState4 == LOW) {
        digitalWrite(led1, LOW);
        digitalWrite(led2, LOW);
        digitalWrite(led3, LOW);
      }
    }
  }
  lastswState4 = reading4;
}