//#include <LiquidCrystal I2C>

void setup() {
  // put your setup
  //LED_BUILTIN(13,OUTPUT);

  pinMode( 13, OUTPUT);
  pinMode( 20, INPUT);


}

void loop() {
  // put  main code here, to run repeatedly:
if (20, HIGH)
  {
    digitalWrite(13, HIGH),delay (2000);
  }
  else
  {
    digitalWrite(13, LOW);
    
    {
digitalWrite(13, LOW);
  
  }



/**/
  //digitalWrite( LED_BUILTIN, 1);
  while (pinMode(20,LOW))


}