void setup() {
  // put your setup code here, to run once:
  pinMode(11, INPUT);
  Serial.begin(12500);
}

void loop() {
  // put your main code here, to run repeatedly:
  int a= digitalRead(11);
  Serial.println(a);
  if(a==1){
    digitalWrite(11, HIGH);
  }
  else{
    digitalWrite(11, LOW);
  }
}