void setup() {
 
  Serial.begin(9600);
  Serial.println("Hello, ESP32!");
  pinMode(12, INPUT);
  pinMode(13, INPUT);
  pinMode(14, INPUT);
  pinMode(18, OUTPUT);
  pinMode(19, OUTPUT);
  pinMode(21, OUTPUT); 
}

void loop() {
   int taster12 = digitalRead(12);
  int taster13 = digitalRead(13);
  int taster14 = digitalRead(14);
  if (taster12 == LOW) {
    digitalWrite(18, HIGH);
  } else {
    digitalWrite(18, LOW);
  }

  if (taster12 == LOW,  taster13 == LOW) {
    digitalWrite(19, HIGH);
  } else {
    digitalWrite(19, LOW);
  }
 if (taster12 == LOW, taster13 == LOW, taster14 == LOW) {
    digitalWrite(21, HIGH);
  } else {
    digitalWrite(21, LOW);
  }
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
}