void setup() {
  // put your setup code here, to run once:
  pinMode(10, OUTPUT);
    pinMode(11, OUTPUT);
  pinMode(A0, INPUT_PULLUP);
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(10, HIGH);
  delay(500);
  digitalWrite(10, LOW);
  delay(500);

  if (digitalRead(A0) == LOW) {
   digitalWrite(11, HIGH);
   delay(5000);
   digitalWrite(11, LOW);
   delay(500);
 
  }

}