const int ledPins[] = {22, 23, 24};
const int sensorPins[] = {A1, A2, A3};
bool pirStates[] = {false, false, false};

void setup() {
  Serial.begin(9600);
  for (int i = 0; i < 3; i++) {
    pinMode(ledPins[i], OUTPUT);
    pinMode(sensorPins[i], INPUT);
  }
}

void loop() {
  for (int i = 0; i < 3; i++) {
    bool sensorState = digitalRead(sensorPins[i]);

    if (sensorState != pirStates[i]) {
      pirStates[i] = sensorState;

      digitalWrite(ledPins[i], sensorState);
    }
  }

  delay(100);
}