int f1 = 0;
int f2 = 0;
int count = 0;
int ledPin = 2; // Define the LED pin for ESP32 (example pin 2)

void setup() {
  pinMode(12, INPUT);
  pinMode(14, INPUT);
  pinMode(ledPin, OUTPUT); // Set the LED pin as an output
  Serial.begin(9600);
  Serial.println(count);
}

void loop() {
  int x = digitalRead(12);
  int y = digitalRead(14);

  if (x == HIGH && f1 == 0) {
    count = count + 1;
    Serial.println("Total number of students:");
    Serial.println(count);
    f1 = 1;
    digitalWrite(ledPin, HIGH); // Turn on the LED
    delay(1000);
    digitalWrite(ledPin, LOW); // Turn off the LED
  } else if (x == LOW) {
    f1 = 0;
  }

  if (y == HIGH && f2 == 0 && count > 0) {
    count = count - 1;
    Serial.println("Total number of students:");
    Serial.println(count);
    f2 = 1;
    digitalWrite(ledPin, HIGH); // Turn on the LED
    delay(1000);
    digitalWrite(ledPin, LOW); // Turn off the LED
  } else if (y == LOW) {
    f2 = 0;
  }
}