const int ledPins[] = {9, 10, 11, 12, 13};

void setup() {
  for (int i = 0; i < 5; i++) {
    pinMode(ledPins[i], OUTPUT);
  }
}

void loop() {
  int potentiometerValue = analogRead(A0);
  int numLEDs = 0;

  if (potentiometerValue >= 1000) {
    numLEDs = 5;
  } else if (potentiometerValue >= 800) {
    numLEDs = 4;
  } else if (potentiometerValue >= 400) {
    numLEDs = 3;
  } else if (potentiometerValue >= 200) {
    numLEDs = 2;
  } else if (potentiometerValue >= 50) {
    numLEDs = 1;
  }

  for (int i = 0; i < 5; i++) {
    if (i < numLEDs) {
      digitalWrite(ledPins[i], HIGH);
    } else {
      digitalWrite(ledPins[i], LOW);
    }
  }

  delay(100);
}