void setup() {
  Serial.begin(115200);
  pinMode(13, INPUT);
  pinMode(A0, INPUT);
  pinMode(12, OUTPUT);
  pinMode(14, OUTPUT);
  pinMode(16, OUTPUT);
}

void loop() {
  Serial.print("sw : \t");
  Serial.print(digitalRead(13));
  Serial.print("\ta0 : \t");
  Serial.println(analogRead(A0));
  if (analogRead(A0) > 500 && !digitalRead(13)) {
    digitalWrite(12, 1);
    digitalWrite(14, 1);
    digitalWrite(16, 1);
  }
  else if (analogRead(A0) < 200 && !digitalRead(13)) {
    digitalWrite(12, 0);
    digitalWrite(14, 0);
    digitalWrite(16, 1);
  }
  else if (analogRead(A0) >= 700 && digitalRead(13)) {
    digitalWrite(12, 0);
    digitalWrite(14, 1);
    digitalWrite(16, 0);
  }
  else if (analogRead(A0) <= 300 && digitalRead(13)) {
    digitalWrite(12, 1);
    digitalWrite(14, 0);
    digitalWrite(16, 1);
  }
  else {
    digitalWrite(12, 0);
    digitalWrite(14, 0);
    digitalWrite(16, 0);
  }
}